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  • Overview of Microsoft SQL Server 2008 Upgrade Advisor

    - by Akshay Deep Lamba
    Problem Like most organizations, we are planning to upgrade our database server from SQL Server 2005 to SQL Server 2008. I would like to know is there an easy way to know in advance what kind of issues one may encounter when upgrading to a newer version of SQL Server? One way of doing this is to use the Microsoft SQL Server 2008 Upgrade Advisor to plan for upgrades from SQL Server 2000 or SQL Server 2005. In this tip we will take a look at how one can use the SQL Server 2008 Upgrade Advisor to identify potential issues before the upgrade. Solution SQL Server 2008 Upgrade Advisor is a free tool designed by Microsoft to identify potential issues before upgrading your environment to a newer version of SQL Server. Below are prerequisites which need to be installed before installing the Microsoft SQL Server 2008 Upgrade Advisor. Prerequisites for Microsoft SQL Server 2008 Upgrade Advisor .Net Framework 2.0 or a higher version Windows Installer 4.5 or a higher version Windows Server 2003 SP 1 or a higher version, Windows Server 2008, Windows XP SP2 or a higher version, Windows Vista Download SQL Server 2008 Upgrade Advisor You can download SQL Server 2008 Upgrade Advisor from the following link. Once you have successfully installed Upgrade Advisor follow the below steps to see how you can use this tool to identify potential issues before upgrading your environment. 1. Click Start -> Programs -> Microsoft SQL Server 2008 -> SQL Server 2008 Upgrade Advisor. 2. Click Launch Upgrade Advisor Analysis Wizard as highlighted below to open the wizard. 2. On the wizard welcome screen click Next to continue. 3. In SQL Server Components screen, enter the Server Name and click the Detect button to identify components which need to be analyzed and then click Next to continue with the wizard. 4. In Connection Parameters screen choose Instance Name, Authentication and then click Next to continue with the wizard. 5. In SQL Server Parameters wizard screen select the Databases which you want to analysis, trace files if any and SQL batch files if any.  Then click Next to continue with the wizard. 6. In Reporting Services Parameters screen you can specify the Reporting Server Instance name and then click next to continue with the wizard. 7. In Analysis Services Parameters screen you can specify an Analysis Server Instance name and then click Next to continue with the wizard. 8. In Confirm Upgrade Advisor Settings screen you will be able to see a quick summary of the options which you have selected so far. Click Run to start the analysis. 9. In Upgrade Advisor Progress screen you will be able to see the progress of the analysis. Basically, the upgrade advisor runs predefined rules which will help to identify potential issues that can affect your environment once you upgrade your server from a lower version of SQL Server to SQL Server 2008. 10. In the below snippet you can see that Upgrade Advisor has completed the analysis of SQL Server, Analysis Services and Reporting Services. To see the output click the Launch Report button at the bottom of the wizard screen. 11. In View Report screen you can see a summary of issues which can affect you once you upgrade. To learn more about each issue you can expand the issue and read the detailed description as shown in the below snippet.

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  • LSI SAS 9240-8i on Ubuntu 12.04 Hangs on Modprobe

    - by Francois Stark
    I used the LSI 9240-8i card on a smaller Intel motherboard with no problems in Ubuntu, with ZFS. However, we rebuilt the server to allow for more disks, using the ASROCK X79 Extreme 11 motherboard. It has 7 PCIe slots, and a LSI 2008 on-board. At first I thought the LSI 9240, when plugged in to PCIe, clashed with the on-board LSI 2008. Every time I plugged in the LSI 9240, modprobe would hang. Then I completely disabled the on-board LSI 2008, and the problem persisted. Last night it booted perfectly ONCE - all LSI cards and connected disks visible... However, all subsequent reboots failed. Both LSI cards' bios scans appear and they both see the disks connected to them, but Ubuntu modprobe hangs. Some selected dmesg lines, with both LSI cards enabled: [ 190.752100] megasas: [ 0]waiting for 1 commands to complete [ 195.772071] megasas: [ 5]waiting for 1 commands to complete [ 200.792079] megasas: [10]waiting for 1 commands to complete [ 205.812078] megasas: [15]waiting for 1 commands to complete [ 210.832037] megasas: [20]waiting for 1 commands to complete [ 215.852077] megasas: [25]waiting for 1 commands to complete [ 220.872072] megasas: [30]waiting for 1 commands to complete [ 225.892078] megasas: [35]waiting for 1 commands to complete [ 230.912086] megasas: [40]waiting for 1 commands to complete [ 235.932075] megasas: [45]waiting for 1 commands to complete [ 240.306157] usb 2-1.5: USB disconnect, device number 7 [ 240.952076] megasas: [50]waiting for 1 commands to complete [ 240.960034] INFO: task modprobe:233 blocked for more than 120 seconds. [ 240.960055] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 240.960067] modprobe D ffffffff81806200 0 233 146 0x00000004 [ 240.960075] ffff880806ae3b48 0000000000000086 ffff880806ae3ae8 ffffffff8101adf3 [ 240.960083] ffff880806ae3fd8 ffff880806ae3fd8 ffff880806ae3fd8 0000000000013780 [ 240.960090] ffffffff81c0d020 ffff880806acae00 ffff880806ae3b58 ffff880808961720 [ 240.960096] Call Trace: [ 240.960107] [<ffffffff8101adf3>] ? native_sched_clock+0x13/0x80 [ 240.960116] [<ffffffff816579cf>] schedule+0x3f/0x60 [ 240.960137] [<ffffffffa00093f5>] megasas_issue_blocked_cmd+0x75/0xb0 [megaraid_sas] [ 240.960144] [<ffffffff8108aa50>] ? add_wait_queue+0x60/0x60 [ 240.960154] [<ffffffffa000a6c9>] megasas_get_seq_num+0xd9/0x260 [megaraid_sas] [ 240.960164] [<ffffffffa000ab31>] megasas_start_aen+0x31/0x60 [megaraid_sas] [ 240.960174] [<ffffffffa00136f1>] megasas_probe_one+0x69a/0x81c [megaraid_sas] [ 240.960182] [<ffffffff813345bc>] local_pci_probe+0x5c/0xd0 [ 240.960189] [<ffffffff81335e89>] __pci_device_probe+0xf9/0x100 [ 240.960197] [<ffffffff8130ce6a>] ? kobject_get+0x1a/0x30 [ 240.960205] [<ffffffff81335eca>] pci_device_probe+0x3a/0x60 [ 240.960212] [<ffffffff813f5278>] really_probe+0x68/0x190 [ 240.960217] [<ffffffff813f5505>] driver_probe_device+0x45/0x70 [ 240.960223] [<ffffffff813f55db>] __driver_attach+0xab/0xb0 [ 240.960227] [<ffffffff813f5530>] ? driver_probe_device+0x70/0x70 [ 240.960233] [<ffffffff813f5530>] ? driver_probe_device+0x70/0x70 [ 240.960237] [<ffffffff813f436c>] bus_for_each_dev+0x5c/0x90 [ 240.960243] [<ffffffff813f503e>] driver_attach+0x1e/0x20 [ 240.960248] [<ffffffff813f4c90>] bus_add_driver+0x1a0/0x270 [ 240.960255] [<ffffffffa001e000>] ? 0xffffffffa001dfff [ 240.960260] [<ffffffff813f5b46>] driver_register+0x76/0x140 [ 240.960266] [<ffffffffa001e000>] ? 0xffffffffa001dfff [ 240.960271] [<ffffffff81335b66>] __pci_register_driver+0x56/0xd0 [ 240.960277] [<ffffffffa001e000>] ? 0xffffffffa001dfff [ 240.960286] [<ffffffffa001e09e>] megasas_init+0x9e/0x1000 [megaraid_sas] [ 240.960294] [<ffffffff81002040>] do_one_initcall+0x40/0x180 [ 240.960301] [<ffffffff810a82fe>] sys_init_module+0xbe/0x230 [ 240.960307] [<ffffffff81661ec2>] system_call_fastpath+0x16/0x1b [ 240.960314] INFO: task scsi_scan_7:349 blocked for more than 120 seconds.

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  • Accessing home directory hangs

    - by Jeff
    Occasionally my laptop will hang when trying to access my home directory. The only fix so far is to reboot and then it goes away for a week. /var/log/kern.log has the following error: Nov 21 13:54:39 Laptop1 kernel: [231480.428107] INFO: task ls:10104 blocked for more than 120 seconds. Nov 21 13:54:39 Laptop1 kernel: [231480.428114] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Nov 21 13:54:39 Laptop1 kernel: [231480.428120] ls D f5dbf6a0 0 10104 9964 0x00000004 Nov 21 13:54:39 Laptop1 kernel: [231480.428130] f3edbd40 00000086 00000001 f5dbf6a0 00000000 00000001 c175dfe0 c1868ec0 Nov 21 13:54:39 Laptop1 kernel: [231480.428145] c1868ec0 054eadaf 0000d250 f5005ec0 ee940cc0 f3e5b300 f3edbcf8 c10e8bfa Nov 21 13:54:39 Laptop1 kernel: [231480.428159] f3edbd10 f3edbd10 f3edbd10 c102b505 fffba7e8 089fa000 f3edbd38 c10fb528 Nov 21 13:54:39 Laptop1 kernel: [231480.428173] Call Trace: Nov 21 13:54:39 Laptop1 kernel: [231480.428189] [<c10e8bfa>] ? lru_cache_add_lru+0x2a/0x50 Nov 21 13:54:39 Laptop1 kernel: [231480.428199] [<c102b505>] ? __kunmap_atomic+0x75/0xa0 Nov 21 13:54:39 Laptop1 kernel: [231480.428207] [<c10fb528>] ? do_anonymous_page+0x1f8/0x280 Nov 21 13:54:39 Laptop1 kernel: [231480.428218] [<c152b656>] __mutex_lock_slowpath+0xc6/0x120 Nov 21 13:54:39 Laptop1 kernel: [231480.428225] [<c152b304>] mutex_lock+0x24/0x40 Nov 21 13:54:39 Laptop1 kernel: [231480.428246] [<f83ab87c>] cifs_reconnect_tcon+0x13c/0x2a0 [cifs] Nov 21 13:54:39 Laptop1 kernel: [231480.428255] [<c152fa00>] ? vmalloc_fault+0xee/0xee Nov 21 13:54:39 Laptop1 kernel: [231480.428262] [<c152fc2f>] ? do_page_fault+0x22f/0x4a0 Nov 21 13:54:39 Laptop1 kernel: [231480.428276] [<f83abe3c>] smb_init+0x2c/0x90 [cifs] Nov 21 13:54:39 Laptop1 kernel: [231480.428285] [<c11aa42e>] ? ext4_htree_store_dirent+0x2e/0x120 Nov 21 13:54:39 Laptop1 kernel: [231480.428301] [<f83b0941>] CIFSSMBQPathInfo+0x41/0x210 [cifs] Nov 21 13:54:39 Laptop1 kernel: [231480.428319] [<f83c39e4>] ? cifs_get_inode_info+0x224/0x390 [cifs] Nov 21 13:54:39 Laptop1 kernel: [231480.428336] [<f83c3a21>] cifs_get_inode_info+0x261/0x390 [cifs] Nov 21 13:54:39 Laptop1 kernel: [231480.428354] [<f83bb35d>] ? build_path_from_dentry+0xcd/0x250 [cifs] Nov 21 13:54:39 Laptop1 kernel: [231480.428362] [<c102b69e>] ? kmap_atomic_prot+0xde/0x100 Nov 21 13:54:39 Laptop1 kernel: [231480.428370] [<c152c4cd>] ? _raw_spin_lock+0xd/0x10 Nov 21 13:54:39 Laptop1 kernel: [231480.428388] [<f83c6378>] ? _GetXid+0x58/0x80 [cifs] Nov 21 13:54:39 Laptop1 kernel: [231480.428405] [<f83c4f81>] cifs_revalidate_dentry_attr+0x111/0x1a0 [cifs] Nov 21 13:54:39 Laptop1 kernel: [231480.428423] [<f83c50e2>] cifs_getattr+0x52/0x120 [cifs] Nov 21 13:54:39 Laptop1 kernel: [231480.428431] [<c112c5b2>] vfs_getattr+0x42/0x70 Nov 21 13:54:39 Laptop1 kernel: [231480.428448] [<f83c5090>] ? cifs_revalidate_dentry+0x40/0x40 [cifs] Nov 21 13:54:39 Laptop1 kernel: [231480.428455] [<c112c647>] vfs_fstatat+0x67/0x80 Nov 21 13:54:39 Laptop1 kernel: [231480.428461] [<c112c680>] vfs_lstat+0x20/0x30 Nov 21 13:54:39 Laptop1 kernel: [231480.428468] [<c112c946>] sys_lstat64+0x16/0x30 Nov 21 13:54:39 Laptop1 kernel: [231480.428475] [<c11341ed>] ? link_path_walk+0x79d/0x8a0 Nov 21 13:54:39 Laptop1 kernel: [231480.428483] [<c152c8e4>] syscall_call+0x7/0xb

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  • Ubuntu 13.04 installation issues: unable to handle kernel paging request error

    - by user173944
    I wish I could say that I’ve done more for the Linux community as of recent but I am very VERY new to all of this and I feel very much in over my head. I figured I would install Ubuntu. on my computer and then I would learn and contribute to the community simultaneously. I will try to be as detailed as I can, please ask questions if you need clarification. I installed Ubuntu. 13.04 (64-bit) on my dell Inspiron 1501. This has an AMD Turion 64-bit TL-56 1.8 Ghz mobile processor. It is a dual core. It has an ATI Radeon Xpress 1150 chipset in it as well. As of right now I only have a total of 2Ghz ram, however I was planning on upgrading that in the near future so I opted for the 64-bit Ubuntu. 13.04. I first tried the live CD and everything seemed to be functioning correctly other than the wireless (but that's not the issue at hand, there are plenty of guides on the internet on how to get that functioning). The internet worked just fine when it was plugged in so no issues there. However, once I went from that to installing 13.04 (just 13.04, no dual partitioning... I want this computer to run strictly Ubuntu.) it did not work. It took me into a shell that I could not type anything into. In this shell it said Bug: unable to handle kernel paging and then it called a bunch of traces and froze up. I had to hard reset the laptop. I tried the boot-repair program multiple times with many different settings and typically after starting up the laptop would say something along the lines of recursive errors. will attempt to fix and then it would attempt to fix a couple of things, and then the computer would freeze up after the text said end trace... so I had to hard reset it again. I'm not an impatient person either, when I say it would freeze up it would be for a period of at least 15 minutes each time before I decided to hard reset. I attempted to install 12.10 on it instead and I got the same exact message, and when I ran boot-repair it did the same exact thing as before. I am currently in the process of running memtest64+ on the computer's memory, though I really don't believe that, nor any of the hardware is at fault due to the fact that it was still running windows vista perfectly when I had decided to switch over to Ubuntu. so far the memtest has came back just fine without any errors, but I’ve only been running it for approximately an hour. So this is the situation I’m in. I did notice when I was using the live disk that the video driver needed updated so I performed that, though I’m fairly certain that has nothing to do with this. I have also attempted (though I’m not certain that my attempt was successful in accomplishing what I had planned) to manually edit the grub settings by making acpi=0 along top of adding nomodeset to the boot commands. Like I said, I’m not sure I did that correctly though, but I’m fairly certain I did. If anyone needs any more information I will be more than happy to provide it, I will post back once I get the full results of the memtest. I very much appreciate any ideas anyone else has, I’ve been at this for a few days to no avail... thank you

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  • Automated Error Reporting = More Robust Software

    - by Laila
    I would like to tell you how to revolutionize your software development process </marketing hyperbole> On a more serious note, we (Red Gate's .NET Development team) recently rolled a new tool into our development process which has made our lives dramatically easier AND improved the quality of our software, and I (& one of our developers, Alex Davies) just wanted to take a quick moment to share the love. I work with a development team that takes pride in what they ship, so we take software testing rather seriously. For every development project we run, we allocate at least one software tester for every two developers, and we never ship software without first shipping early access releases and betas to get user feedback. And therein lies the challenge -encouraging users to provide consistent, useful feedback is a headache, but without that feedback, improving the software is. tricky. Until fairly recently, we used the standard (if long-winded) approach of receiving bug reports of variable quality via email or through our support forums. If that didn't give us enough information to reproduce the problem - which was most of the time - we had to enter into a time-consuming to-and-fro conversation with the end-user, to get scrape together the data we needed to work out where the problem lay. As I'm sure you're aware, this is painfully slow. To the delight of the team, we recently got to work with SmartAssembly, which lets us embed automated exception and error reporting into our software with very little pain, and we decided to do a little dogfooding. As a result, we've have made a really handy (if perhaps slightly obvious) discovery: As soon as we release a beta, or indeed any release of software, we now get tonnes of customer feedback through automated error reports. Making this process easier for our users has dramatically increased the amount (and quality) of feedback we get. From their point of view, they get an experience similar to Microsoft's error reporting, and process is essentially idiot-proof. From our side of things, we can now react much faster to the information we get, fixing the bugs and shipping a new-and-improved release, which our users rather appreciate. Smiles and hugs all round. Even more so because, as we're use SmartAssembly's Automated Error Reporting, we get to avoid having to spend weeks building an exception reporting mechanism. It takes just a few minutes to add reporting to a project, and we get a bunch of useful information back, like a stack trace and the values of all the local variables, which we can use to fix bugs. Happily, "Automated Error Reporting = More Robust Software" can actually be read two ways: we've found that we not only ship higher quality software, but we also release within a shorter time. We can ship stable software that our users are happy to upgrade to, and we then bask in the glory of lots of positive customer feedback. Once we'd starting working with SmartAssembly, we were curious to know how widespread error reporting was as a practice. Our product manager ran a survey in autumn last year, and found that 40% of software developers never really considered deploying error reporting. Considering how we've now got plenty of experience on the subject, one of our dev guys, Alex Davies, thought we should share what we've learnt, and he's kindly offered to host a webinar on delivering robust software with Automated Error Reporting. Drawing on our own in-house development experiences, he'll cover how to add error reporting to your program, how to actually use the error reports to fix bugs (don't snigger, not everyone's as bright as you), how to customize the error report dialog that your users see, and how to automatically get log files from your users' machine. The webinar will take place on Jan 25th (that's next week). It's free to attend, but you'll still need to register to hear Alex's dulcet tones.

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  • What is the SharePoint Action Framework and Why do I need it ?

    - by SAF
    For those out there that are a little curious as to whether SAF is any use to your organisation, please read this FAQ.  What is SAF ? SAF is free to use. SAF is the "SharePoint Action Framework", it was built by myself and Hugo (plus a few others along the way). SAF is written entirely in C# code available from : http://saf.codeplex.com.   SAF is a way to automate SharePoint configuration changes. An Action is a command/class/task/script written in C# that performs a unit of execution against SharePoint such as "CreateWeb"  or "AddLookupColumn". A SAF Macro is collection of one or more Actions. SAF Macro can be run from Msbuild, a Feature, StsAdm or common plain old .Net code. Parameters can be passed to a Macro at run-time from a variety of sources such as "Environment Variable", "*.config", "Msbuild Properties", Feature Properties, command line args, .net code. SAF emits lots of trace statements at run-time, these can be viewed using "DebugView". One Action can pass parameters to another Action. Parameters can be set using Expression Syntax such as "DateTime.Now".  You should consider SAF is you suffer from one of the following symptoms... "Our developers write lots of code to deploy changes at release time - it's always rushed" "I don't want my developers shelling out to Powershell or Stsadm from a Feature". "We have loads of Console applications now, I have lost track of where they are, or what they do" "We seem to be writing similar scripts against SharePoint in lots of ways, testing is hard". "My scripts often have lots of errors - they are done at the last minute". "When something goes wrong - I have no idea what went wrong or how to solve it". "Our Features get stuck and bomb out half way through - there no way to roll them back". "We have tons of Features now - I can't keep track". "We deploy Features to run one-off tasks" "We have a library of reusable scripts, but, we can only run it in one way, sometimes we want to run it from MSbuild and a Feature". "I want to automate the deployment of changes to our development environment". "I would like to run a housekeeping task on a scheduled basis"   So I like the sound of SAF - what's the problems ?  Realistically, there are few things that need to be considered: Someone on your team will need to spend a day or 2 understanding SAF and deciding exactly how you want to use it. I would suggest a Tech Lead, SysAdm or SP Architect will need to download it, try out the examples, look through the unit tests. Ask us questions. Although, SAF can be downloaded and set to go in a few minutes, you will still need to address issues such as - "Do you want to execute your Macros in MsBuild or from a Feature ?" You will need to decide who is going to do your deployments - is it each developer to themself, or do you require a dedicated Build Manager ? As most environments (Dev, QA, Live etc) require different settings (e.g. Urls, Database names, accounts etc), you will more than likely want to define these and set a properties file up for each environment. (These can then be injected into Saf at run-time). There may be no Action to solve your particular problem. If this is the case, suggest it to us - we can try and write it, or write it yourself. It's very easy to write a new Action - we have an approach to easily unit test it, document it and author it. For example, I wrote one to deploy  a WSP in 2 hours the other day. Alternatively, Saf can also call Stsadm commands and Powershell scripts.   Anyway, I do hope this helps! If you still need help, or a quick start, we can also offer consultancy around SAF. If you want to know more give us a call or drop an email to [email protected]

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  • Graduate Life in Oracle by Ramakrishna Nalabothula

    - by david.talamelli
    Preparation for the BIG interview: I prepared in both technical and logical aspects to face the Oracle Interview. I had to cover almost all main areas in technical and many types of problems in logical areas. We attended mock- interviews and written tests at our college, browsed websites and communities. Having started with such a rigorous preparation before Oracle visited the college; it was possible for me to make it into the list of final selection. I put in a big effort to reach this position and I am very happy to achieve this. Why I chose Oracle: Oracle is one of the best technology providers and has a large customer base. I think it is not an easy job to offer services to that many customers. So, the company needs young and dynamic people and I wanted to be one among them. This gave me spirit and led me to walk into Oracle. I am working on different technologies and learning something new in the field. Having many customers is challenging Oracle and my work is challenging me. I am confident enough that customers to both me and Oracle will never lose their faith. Learning at Oracle: The style of learning is good and never resembles a classroom session in a college. It is always fun to learn here. There is no exam to track the performance. There is enough time until we completely learn it. There is no concept of stiff competition. Peers help through KT (Knowledge Transfers) and there are good resources in the Oracle to learn. People are always there to direct you to those. There are lots of opportunities for Web learning too! My Work Area: My team gives me a great opportunity to offer service to the entire product. There were no situations when I got tense with my work or targets and deliverables. I work with a Global Team and my manager is based in the UK. I have a lot of freedom and flexibility. I use the work from home option in case of any disturbances in the city or due to personal problems. I have a weekly meeting with my manager and use Instant Messenger for status updates. My manager plans very well to give me enough time to complete tasks. I have good coordination from the team towards our deadlines. My work has also brought me close to many people across various technology and product teams. I am glad to make many friends across Oracle. I am enjoying my time and work here. I cover all the major activities in the team. I am thankful to everyone from the Development and Quality Assurance Team to have high confidence in me by assigning such big responsibilities. Primary tasks are maintaining the environments that are very unstable at times. This really requires big time and effort to trace the root causes. I am working and still learning on all these areas. The happiest thing is I got chances to travel to USA & UK for training and for supporting a few customer demo projects. I have got to explore more across two countries and got sponsored to visit the places around due to Oracle's policies. I am very much thankful for these what I have from Oracle and for the cooperation there from other colleagues. Fun at Work: Oracle has a club from Employees to conduct games and events. I had an opportunity to participate in competitions, tournaments inside Oracle and Inter-Corporate for all games. I thank Oracle for providing me all these opportunities and I would like to extend my thanks to Senior Management for their confidence in me. I thank Oracle HR Recruiting Team too for selecting me into Oracle and giving me this opportunity to share my experience and feelings. Ramakrishna Nalabothula

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  • Java EE @ No Fluff Just Stuff Tour

    - by reza_rahman
    If you work in the US and still don't know what the No Fluff Just Stuff (NFJS) Tour is, you are doing yourself a very serious disfavor. NFJS is by far the cheapest and most effective way to stay up to date through some world class speakers and talks. This is most certainly true for US enterprise Java developers in particular. Following the US cultural tradition of old-fashioned roadshows, NFJS is basically a set program of speakers and topics offered at major US cities year round. Many now famous world class technology speakers can trace their humble roots to NFJS. Via NFJS you basically get to have amazing training without paying for an expensive venue, lodging or travel. The events are usually on the weekends so you don't need to even skip work if you want (a great feature for consultants on tight budgets and deadlines). I am proud to share with you that I recently joined the NFJS troupe. My hope is that this will help solve the lingering problem of effectively spreading the Java EE message here in the US. For NFJS I hope my joining will help beef up perhaps much desired Java content. In any case, simply being accepted into this legendary program is an honor I could have perhaps only dreamed of a few years ago. I am very grateful to Jay Zimmerman for seeing the value in me and the Java EE content. The current speaker line-up consists of the likes of Neal Ford, Venkat Subramaniam, Nathaniel Schutta, Tim Berglund and many other great speakers. I actually had my tour debut on April 4-5 with the NFJS New York Software Symposium - basically a short train commute away from my home office. The show is traditionally one of the smaller ones and it was not that bad for a start. I look forward to doing a few more in the coming months (more on that a bit later). I had four talks back to back (really my most favorite four at the moment). The first one was a talk on JMS 2 - some of you might already know JMS is one of my most favored Java EE APIs. The slides for the talk are posted below: What’s New in Java Message Service 2 from Reza Rahman The next talk I delivered was my Cargo Tracker/Java EE + DDD talk. This talk basically overviews DDD and describes how DDD maps to Java EE using code examples/demos from the Cargo Tracker Java EE Blue Prints project. Applied Domain-Driven Design Blue Prints for Java EE from Reza Rahman The third talk I delivered was our flagship Java EE 7/8 talk. As you may know, currently the talk is basically about Java EE 7. I'll probably slowly evolve this talk to gradually transform it into a Java EE 8 talk as we move forward (I'll blog about that separately shortly). The following is the slide deck for the talk: JavaEE.Next(): Java EE 7, 8, and Beyond from Reza Rahman My last talk for the show was my JavaScript+Java EE 7 talk. This talk is basically about aligning EE 7 with the emerging JavaScript ecosystem (specifically AngularJS). The slide deck for the talk is here: JavaScript/HTML5 Rich Clients Using Java EE 7 from Reza Rahman Unsurprisingly this talk was well-attended. The demo application code is posted on GitHub. The code should be a helpful resource if this development model is something that interests you. Do let me know if you need help with it but the instructions should be fairly self-explanatory. My next NFJS show is the Central Ohio Software Symposium in Columbus on June 6-8 (sorry for the late notice - it's been a really crazy few weeks). Here's my tour schedule so far, I'll keep you up-to-date as the tour goes forward: June 6 - 8, Columbus Ohio. June 24 - 27, Denver Colorado (UberConf) - my most extensive agenda on the tour so far. July 18 - 20, Austin Texas. I hope you'll take this opportunity to get some updates on Java EE as well as the other awesome content on the tour?

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  • PECL OCI8 2.0 Production Release Announcement

    - by cj
    The PHP OCI8 2.0.6 extension for Oracle Database is now "production" status. The source code is available on PECL. This can be used immediately to update your OCI8 extension in PHP 5.2 and later versions. The extension compiles with Oracle 10.2 or later client libraries. Oracle's standard cross-version database connectivity applies. OCI8 2.0 and PHP 5.5.5 RPMs for Oracle and Red Hat Linux are available from oss.oracle.com. Windows DLLs are available on PECL for PHP 5.3, PHP 5.4 and PHP 5.5. OCI8 2.0 source code will also be automatically included in the next major version of PHP. New Functionality Oracle Database 12c Implicit Result Set support. IRS's make it easy to pass query results back from stored PL/SQL procedures or anonymous PL/SQL blocks. Individual IRS statement resources, each corresponding to a single query, can be obtained with the new function oci_get_implicit_resultset(). These 'child' statement resources can be passed to any oci_fetch_* function. See Using PHP and Oracle Database 12c Implicit Result Sets and the PHP Manual: oci_get_implicit_resultset(). DTrace Dynamic Trace static probes. This well respected DTrace tracing framework is available on a number of platforms, including Oracle Linux. PHP OCI8 static user-space probes can be enabled with PHP's --enable-dtrace configuration option. See Using PHP DTrace on Oracle Linux. Documentation is also available in the PHP Manual OCI8 and DTrace Dynamic Tracing Improved Functionality Using oci_execute($s, OCI_NO_AUTO_COMMIT) for a SELECT no longer unnecessarily initiates an internal ROLLBACK during connection close. This can improve overall scalability by reducing "round trips" between PHP and the database. Changed Functionality PHP OCI8 2.0's minimum pre-requisites are now PHP 5.2 and Oracle client library 10.2. Later versions of both are usable and, in fact, recommended. Use the older PHP OCI8 1.4.10 extension when using PHP 4.3.9 through to PHP 5.1.x, or when only Oracle Database 9.2 client libraries are available. oci_set_*($connection, ...) meta data setting call error handling is fixed so that oci_error($connection) works for these calls. Note: The old, deprecated function aliases like ocilogon still exist but are not recommended for new applications. Phpinfo() Changes Some cosmetic changes were made to the output of php --ri oci8 and the phpinfo() function. The oci8.event and oci8.connection_class values are now shown only when the Oracle client libraries support the respective functionality. Connection statistics are now in a separate phpinfo() table. Temporary LOB and Collection support status lines in phpinfo() output were removed. These two features have always been enabled since 2007. Oci_internal_debug() Changes The oci_internal_debug() function is now a no-op. Use PHP's --enable-dtrace functionality with DTrace or SystemTap instead. References OCI8 Extension source code and Windows DLLs http://pecl.php.net/package/oci8 Oracle Linux RPMs oss.oracle.com PHP Manual for OCI8 OCI8 and DTrace Dynamic Tracing Oracle OpenWorld Conference paper What's New in Oracle Database 12c for PHP

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  • Help needed throwing a ball in AS3

    - by Opoe
    I'm working on a flash game, coding on the time line. What I'm trying to accomplish is the following: With the mouse you swing and throw/release a ball which bounces against the walls and eventualy comes to point where it lays still (like a real ball). I allmost had it working, but now the ball sticks to the mouse, in stead of being released, my question to you is: Can you help me make this work and explain to me what I did wrong? You can simply preview my code by making a movieclip named 'circle' on a 550x400 stage. stage.addEventListener(Event.ENTER_FRAME, circle_update); var previousPostionX:Number; var previousPostionY:Number; var throwSpeedX:Number; var throwSpeedY:Number; var isItDown:Boolean; var xSpeed:Number = 0; var ySpeed:Number = 0; var friction:Number = 0.96; var offsetX:Number = 0; var offsetY:Number = 0; var newY:Number = 0; var oldY:Number = 0; var newX:Number = 0; var oldX:Number = 0; var dragging:Boolean; circle.buttonMode = true; circle.addEventListener(MouseEvent.MOUSE_DOWN, mouseDownHandler); circle.addEventListener(Event.ENTER_FRAME, throwcircle); circle.addEventListener(MouseEvent.MOUSE_DOWN, clicked); circle.addEventListener(MouseEvent.MOUSE_UP, released); function mouseDownHandler(e:MouseEvent):void { dragging = true; stage.addEventListener(MouseEvent.MOUSE_UP, mouseUpHandler); offsetX = mouseX - circle.x; offsetY = mouseY - circle.y; } function mouseUpHandler(e:MouseEvent):void { dragging = false; } function throwcircle(e:Event) { circle.x += xSpeed; circle.y += ySpeed; xSpeed *= friction; ySpeed *= friction; } function changeFriction(e:Event):void { friction = e.target.value; trace(e.target.value); } function circle_update(e:Event){ if ( dragging == true ) { circle.x = mouseX - offsetX; circle.y = mouseY - offsetY; } if(circle.x + (circle.width * 0.50) >= 550){ circle.x = 550 - circle.width * 0.50; } if(circle.x - (circle.width * 0.50) <= 0){ circle.x = circle.width * 0.50; } if(circle.y + (circle.width * 0.50) >= 400){ circle.y = 400 - circle.height * 0.50; } if(circle.y - (circle.width * 0.50) <= 0){ circle.y = circle.height * 0.50; } } function clicked(theEvent:Event) { isItDown =true; addEventListener(Event.ENTER_FRAME, updateView); } function released(theEvent:Event) { isItDown =false; } function updateView(theEvent:Event) { if (isItDown==true){ throwSpeedX = mouseX - previousPostionX; throwSpeedY = mouseY - previousPostionY; circle.x = mouseX; circle.y = mouseY; } else{ circle.x += throwSpeedX; circle.y += throwSpeedY; throwSpeedX *=0.9; throwSpeedY *=0.9; } previousPostionX= circle.x; previousPostionY= circle.y; }

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  • Scenarios for Throwing Exceptions

    - by Joe Mayo
    I recently came across a situation where someone had an opinion that differed from mine of when an exception should be thrown. This particular case was an issue opened on LINQ to Twitter for an Exception on EndSession.  The premise of the issue was that the poster didn’t feel an exception should be raised, regardless of authentication status.  As first, this sounded like a valid point.  However, I went back to review my code and decided not to make any changes. Here's my rationale: 1. The exception doesn’t occur if the user is authenticated when EndAccountSession is called. 2. The exception does occur if the user is not authenticated when EndAccountSession is called. 3. The exception represents the fact that EndAccountSession is not able to fulfill its intended purpose - to end the session.  If a session never existed, then it would not be possible to perform the requested action.  Therefore, an exception is appropriate. To help illustrate how to handle this situation, I've modified the following code in Program.cs in the LinqToTwitterDemo project to illustrate the situation: static void EndSession(ITwitterAuthorizer auth) { using (var twitterCtx = new TwitterContext(auth, "https://api.twitter.com/1/", "https://search.twitter.com/")) { try { //Log twitterCtx.Log = Console.Out; var status = twitterCtx.EndAccountSession(); Console.WriteLine("Request: {0}, Error: {1}" , status.Request , status.Error); } catch (TwitterQueryException tqe) { var webEx = tqe.InnerException as WebException; if (webEx != null) { var webResp = webEx.Response as HttpWebResponse; if (webResp != null && webResp.StatusCode == HttpStatusCode.Unauthorized) Console.WriteLine("Twitter didn't recognize you as having been logged in. Therefore, your request to end session is illogical.\n"); } var status = tqe.Response; Console.WriteLine("Request: {0}, Error: {1}" , status.Request , status.Error); } } } As expected, LINQ to Twitter wraps the exception in a TwitterQueryException as the InnerException.  The TwitterQueryException serves a very useful purpose through it's Response property.  Notice in the example above that the response has Request and Error proprieties.  These properties correspond to the information that Twitter returns as part of it's response payload.  This is often useful while debugging to help you understand why Twitter was unable to perform the  requested action.  Other times, it's cryptic, but that's another story.  At least you have some way of knowing in your code how to anticipate and handle these situations, along with having extra information to debug with. To sum things up, there are two points to make: when and why an exception should be raised and when to wrap and re-throw an exception in a custom exception type. I felt it was necessary to allow the exception to be raised because the called method was unable to perform the task it was designed for.  I also felt that it is inappropriate for a general library to do anything with exceptions because that could potentially hide a problem from the caller.  A related point is that it should be the exclusive decision of the application that uses the library on what to do with an exception.  Another aspect of this situation is that I wrapped the exception in a custom exception and re-threw.  This is a tough call because I don’t want to hide any stack trace information.  However, the need to make the exception more meaningful by including vital information returned from Twitter swayed me in the direction to design an interface that was as helpful as possible to library consumers.  As shown in the code above, you can dig into the exception and pull out a lot of good information, such as the fact that the underlying HTTP response was a 401 Unauthorized.  In all, trade-offs are seldom perfect for all cases, but combining the fact that the method was unable to perform its intended function, this is a library, and the extra information can be more helpful, it seemed to be the better design. @JoeMayo

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  • Dont Throw Duplicate Exceptions

    In your code, youll sometimes have write code that validates input using a variety of checks.  Assuming you havent embraced AOP and done everything with attributes, its likely that your defensive coding is going to look something like this: public void Foo(SomeClass someArgument) { if(someArgument == null) { throw new InvalidArgumentException("someArgument"); } if(!someArgument.IsValid()) { throw new InvalidArgumentException("someArgument"); }   // Do Real Work } Do you see a problem here?  Heres the deal Exceptions should be meaningful.  They have value at a number of levels: In the code, throwing an exception lets the develop know that there is an unsupported condition here In calling code, different types of exceptions may be handled differently At runtime, logging of exceptions provides a valuable diagnostic tool Its this last reason I want to focus on.  If you find yourself literally throwing the exact exception in more than one location within a given method, stop.  The stack trace for such an exception is likely going to be identical regardless of which path of execution led to the exception being thrown.  When that happens, you or whomever is debugging the problem will have to guess which exception was thrown.  Guessing is a great way to introduce additional problems and/or greatly increase the amount of time require to properly diagnose and correct any bugs related to this behavior. Dont Guess Be Specific When throwing an exception from multiple code paths within the code, be specific.  Virtually ever exception allows a custom message use it and ensure each case is unique.  If the exception might be handled differently by the caller, than consider implementing a new custom exception type.  Also, dont automatically think that you can improve the code by collapsing the if-then logic into a single call with short-circuiting (e.g. if(x == null || !x.IsValid()) ) that will guarantee that you cant easily throw different information into the message as easily as constructing the exception separately in each case. The code above might be refactored like so:   public void Foo(SomeClass someArgument) { if(someArgument == null) { throw new ArgumentNullException("someArgument"); } if(!someArgument.IsValid()) { throw new InvalidArgumentException("someArgument"); }   // Do Real Work } In this case its taking advantage of the fact that there is already an ArgumentNullException in the framework, but if you didnt have an IsValid() method and were doing validation on your own, it might look like this: public void Foo(SomeClass someArgument) { if(someArgument.Quantity < 0) { throw new InvalidArgumentException("someArgument", "Quantity cannot be less than 0. Quantity: " + someArgument.Quantity); } if(someArgument.Quantity > 100) { throw new InvalidArgumentException("someArgument", "SomeArgument.Quantity cannot exceed 100. Quantity: " + someArgument.Quantity); }   // Do Real Work }   Note that in this last example, Im throwing the same exception type in each case, but with different Message values.  Im also making sure to include the value that resulted in the exception, as this can be extremely useful for debugging.  (How many times have you wished NullReferenceException would tell you the name of the variable it was trying to reference?) Dont add work to those who will follow after you to maintain your application (especially since its likely to be you).  Be specific with your exception messages follow DRY when throwing exceptions within a given method by throwing unique exceptions for each interesting case of invalid state. Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Investigating Strategies For Functional Decomposition

    - by Liam McLennan
    Introducing Functional Decomposition Before I begin I must apologise. I think I am using the term ‘functional decomposition’ loosely, and probably incorrectly. For the purpose of this article I use functional decomposition to mean the recursive splitting of a large problem into increasingly smaller ones, so that the one large problem may be solved by solving a set of smaller problems. The justification for functional decomposition is that the decomposed problem is more easily solved. As software developers we recognise that the smaller pieces are more easily tested, since they do less and are more cohesive. Functional decomposition is important to all scientific pursuits. Once we understand natural selection we can start to look for humanities ancestral species, once we understand the big bang we can trace our expanding universe back to its origin. Isaac Newton acknowledged the compositional nature of his scientific achievements: If I have seen further than others, it is by standing upon the shoulders of giants   The Two Strategies For Functional Decomposition of Computer Programs Private Methods When I was working on my undergraduate degree I was taught to functionally decompose problems by using private methods. Consider the problem of painting a house. The obvious solution is to solve the problem as a single unit: public void PaintAHouse() { // all the things required to paint a house ... } We decompose the problem by breaking it into parts: public void PaintAHouse() { PaintUndercoat(); PaintTopcoat(); } private void PaintUndercoat() { // everything required to paint the undercoat } private void PaintTopcoat() { // everything required to paint the topcoat } The problem can be recursively decomposed until a sufficiently granular level of detail is reached: public void PaintAHouse() { PaintUndercoat(); PaintTopcoat(); } private void PaintUndercoat() { prepareSurface(); fetchUndercoat(); paintUndercoat(); } private void PaintTopcoat() { fetchPaint(); paintTopcoat(); } According to Wikipedia, at least one computer programmer has referred to this process as “the art of subroutining”. The practical issues that I have encountered when using private methods for decomposition are: To preserve the top level API all of the steps must be private. This means that they can’t easily be tested. The private methods often have little cohesion except that they form part of the same solution. Decomposing to Classes The alternative is to decompose large problems into multiple classes, effectively using a class instead of each private method. The API delegates to related classes, so the API is not polluted by the sub-steps of the problem, and the steps can be easily tested because they are each in their own highly cohesive class. Additionally, I think that this technique facilitates better adherence to the Single Responsibility Principle, since each class can be decomposed until it has precisely one responsibility. Revisiting my previous example using class composition: public class HousePainter { private undercoatPainter = new UndercoatPainter(); private topcoatPainter = new TopcoatPainter(); public void PaintAHouse() { undercoatPainter.Paint(); topcoatPainter.Paint(); } } Summary When decomposing a problem there is more than one way to represent the sub-problems. Using private methods keeps the logic in one place and prevents a proliferation of classes (thereby following the four rules of simple design) but the class decomposition is more easily testable and more compatible with the Single Responsibility Principle.

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  • lvm disappeared after disc replacement on raid10

    - by user142295
    here my problem: I am running ubuntu 12.04 on a raid10 (4 disks), on top of which I installed an lvm with two volume groups (one for /, one for /home). The layout of the disks are as follows: Disk /dev/sda: 1500.3 GB, 1500301910016 bytes 255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0003f3b6 Device Boot Start End Blocks Id System /dev/sda1 * 63 481949 240943+ 83 Linux /dev/sda2 481950 2910640634 1455079342+ fd Linux raid autodetect /dev/sda3 2910640635 2930272064 9815715 82 Linux swap / Solaris Disk /dev/sdb: 1500.3 GB, 1500301910016 bytes 255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00069785 Device Boot Start End Blocks Id System /dev/sdb1 63 2910158684 1455079311 fd Linux raid autodetect /dev/sdb2 2910158685 2930272064 10056690 82 Linux swap / Solaris Disk /dev/sdc: 1500.3 GB, 1500301910016 bytes 255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sdc1 63 2910158684 1455079311 fd Linux raid autodetect /dev/sdc2 2910158685 2930272064 10056690 82 Linux swap / Solaris Disk /dev/sdd: 1500.3 GB, 1500301910016 bytes 255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000f14de Device Boot Start End Blocks Id System /dev/sdd1 63 2910158684 1455079311 fd Linux raid autodetect /dev/sdd2 2910158685 2930272064 10056690 82 Linux swap / Solaris The first disk (/dev/sda) contains the /boot partition on /dev/sda1. I use grub2 to boot the system off this partition. On top of this raid10 I installed two volume groups, one for /, one for /home. This system worked well, I even exchanged two disks during the last two years. It always worked. But not this time. For the first time, /dev/sda broke. I do not know if this is an issue – I know I would have struggled anyways to overcome the problem with /boot installed on that disk and grub2 installed on the mbr of /dev/sda. Anyways, I did what I always did: start knoppix fire up the raid sudo mdadm --examine -scan which returns ARRAY /dev/md127 UUID=0dbf4558:1a943464:132783e8:19cdff95 start it up sudo mdadm --assemble /dev/md127 fail the failing disk (smart event) sudo mdadm /dev/md127 --fail /dev/sda2 remove the failing disk sudo mdadm /dev/md127 --remove /dev/sda2 stop the raid sudo mdadm -S /dev/md127 take out the disk replace it with a new one create the same partitions as on the failling one add it to the raid sudo mdadm --assemble /dev/md127 sudo mdadm /dev/md127 --add /dev/sda2 wait 4 hours All looks fine: cat /proc/mdstat returns: Personalities : [raid10] md127 : active raid10 sda2[0] sdd1[3] sdc1[2] sdb1[1] 2910158464 blocks 64K chunks 2 near-copies [4/4] [UUUU] unused devices: <none> and sudo mdadm --detail /dev/md127 returns /dev/md127: Version : 0.90 Creation Time : Wed Jun 10 13:08:46 2009 Raid Level : raid10 Array Size : 2910158464 (2775.34 GiB 2980.00 GB) Used Dev Size : 1455079232 (1387.67 GiB 1490.00 GB) Raid Devices : 4 Total Devices : 4 Preferred Minor : 127 Persistence : Superblock is persistent Update Time : Thu Mar 21 16:27:40 2013 State : clean Active Devices : 4 Working Devices : 4 Failed Devices : 0 Spare Devices : 0 Layout : near=2 Chunk Size : 64K UUID : 0dbf4558:1a943464:132783e8:19cdff95 (local to host Microknoppix) Events : 0.4824680 Number Major Minor RaidDevice State 0 8 2 0 active sync /dev/sda2 1 8 17 1 active sync /dev/sdb1 2 8 33 2 active sync /dev/sdc1 3 8 49 3 active sync /dev/sdd1 However, there is no trace of the volume groups. Rebooting into knoppix does not help Restarting the old system (I actually replugged and re-added the failing disk for that – the system begins to start, but then fails to see the / partition – no wonder if the volume group is gone) does not help. sudo vgscan, sudo vgdisplay, sudo lvs, sudo lvdisplay, sudo vgscan –mknodes all returned No volume groups found. I am completely at a loss. Can anyone tell me if and how I can recover my data? Thanks in advance!

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  • What Counts For a DBA – Depth

    - by Louis Davidson
    SQL Server offers very simple interfaces to many of its features. Most people could open up SSMS, connect to a server, write a simple query and see the results. Even several of the core DBA tasks are deceptively straightforward. It doesn’t take a rocket scientist to perform a basic database backup or run a trace (even using the newfangled Extended Events!). However, appearances can be deceptive, and often times it is really important that a DBA understands not just the basics of how to perform a task, but why we do a task, and how that task works. As an analogy, consider a child walking into a darkened room. Most would know that they need to turn on the light, and how to do it, so they flick the switch. But what happens if light fails to shine forth. Most would immediately tell you that you need to consider changing the light bulb. So you hop in the car and take them to the local home store and instruct them to buy a replacement. Confronted with a 40 foot display of light bulbs, how will they decide which of the hundreds of types of bulbs, of different types, fittings, shapes, colors, power and efficiency ratings, is the right choice? Obviously the main lesson the child is going to learn this day is how to use their cell phone as a flashlight so they don’t have to ask for help the next time. Likewise, when the metaphorical toddlers who use your database server have issues, they will instinctively know something is wrong, and may even have some idea what caused it, but will have no depth of knowledge to figure out the right solution. That is where the DBA comes in and attempts to save the day. However, when one looks beneath the shiny UI, SQL Server has its own “40 foot display of light bulbs”, in the form of the tremendous number of tools and the often-bewildering amount of information they can present to the DBA, to help us find issues. Unfortunately, resorting to guesswork, to trying different “bulbs” over and over, hoping to stumble on the answer. This is where the right depth of knowledge goes a long way. If we need to write a SELECT statement, then knowing the syntax and where to find the data is not enough. Knowledge of indexes and query plans is essential. Without it, we might hit on a query that “works”, but we are basically still a user, not a programmer, because we have no real control over our platform. Is that level of knowledge deep enough? Probably not, since knowledge of the underlying metadata and structures would be very useful in helping us make sense of any query plan. Understanding the structure of an index makes the “key lookup” operator not sound like what you do when someone tapes your car key to the ceiling. So is even this level of understanding deep enough? Do we need to understand the memory architecture used to process the query? It might be a comforting level of knowledge, and will doubtless come in handy at some point, but is not strictly necessary in most cases. Beyond that lies (more or less) full knowledge of SQL language and the intricacies of every step the SQL Server engine takes to process our query. My personal theory is that, as a professional, our knowledge of a given task should extend, at a minimum, one level deeper than is strictly necessary to perform the task. Anything deeper can be left to the ridiculously smart, or obsessive, or both. As an example. tasked with storing an integer value between 0 and 99999999, it’s essential that I know that choosing an Integer over Decimal(8,0) will likely offer performance benefits. It is then useful that I also understand the value of adding a CHECK constraint, to make sure the values are valid to the desired range; and comforting that I know a little about the underlying processors, registers and computer math. Anything further, I leave to the likes of Joe Chang, whose recent blog post on the topic offers depth by the bucketful!  

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  • Login via XDMCP not possible to 12.04 from Squeeze box

    - by Joysn
    Can anybody tell me whats wrong with my 12.04/lightdm/XDMCP setup? i activated X11 remote via tcp and XDMCP on lightdm and restarted lightdm: [SeatDefaults] user-session=ubuntu greeter-session=unity-greeter xserver-allow-tcp=true [XDMCPServer] enabled=true whenever i try to login to the remove lightdm via Xephyr Xephyr -query <remote ip> :10 i get the following trace: SELinux: Disabled on system, not enabling in X server [dix] Could not init font path element /usr/share/fonts/X11/cyrillic, removing from list! Ignoring device from udev. Ignoring device from udev. Ignoring device from udev. Ignoring device from udev. Ignoring device from udev. Ignoring device from udev. *** glibc detected *** Xephyr: free(): corrupted unsorted chunks: 0x08659088 *** ======= Backtrace: ========= /lib/i686/cmov/libc.so.6(+0x6af71)[0xb72b6f71] /lib/i686/cmov/libc.so.6(+0x6c7c8)[0xb72b87c8] /lib/i686/cmov/libc.so.6(cfree+0x6d)[0xb72bb8ad] Xephyr(Xfree+0x21)[0x81ddcd1] Xephyr(SrvXkbResizeKeyType+0x59e)[0x81ca01e] Xephyr[0x81ab8eb] Xephyr[0x81ac8c2] Xephyr[0x8088807] Xephyr[0x807c16a] /lib/i686/cmov/libc.so.6(__libc_start_main+0xe6)[0xb7262ca6] Xephyr[0x8061081] ======= Memory map: ======== 08048000-08204000 r-xp 00000000 fd:00 1148994 /usr/bin/Xephyr 08204000-08210000 rw-p 001bc000 fd:00 1148994 /usr/bin/Xephyr 08210000-08239000 rw-p 00000000 00:00 0 08496000-087ac000 rw-p 00000000 00:00 0 [heap] b5600000-b5621000 rw-p 00000000 00:00 0 b5621000-b5700000 ---p 00000000 00:00 0 b5762000-b588f000 rw-p 00000000 00:00 0 b588f000-b58b3000 r-xp 00000000 fd:00 50040 /usr/lib/libexpat.so.1.5.2 b58b3000-b58b5000 rw-p 00024000 fd:00 50040 /usr/lib/libexpat.so.1.5.2 b58d0000-b5ae4000 r-xp 00000000 fd:00 1212530 /usr/lib/dri/swrast_dri.so b5ae4000-b5ae9000 rw-p 00214000 fd:00 1212530 /usr/lib/dri/swrast_dri.so b5ae9000-b5af8000 rw-p 00000000 00:00 0 b5af8000-b5c24000 rw-s 00000000 00:04 1420132375 /SYSV00000000 (deleted) b5c24000-b5c28000 r-xp 00000000 fd:00 770089 /usr/lib/libXfixes.so.3.1.0 b5c28000-b5c29000 rw-p 00003000 fd:00 770089 /usr/lib/libXfixes.so.3.1.0 b5c29000-b5c31000 r-xp 00000000 fd:00 772923 /usr/lib/libXrender.so.1.3.0 b5c31000-b5c32000 rw-p 00007000 fd:00 772923 /usr/lib/libXrender.so.1.3.0 b5c32000-b5c3a000 r-xp 00000000 fd:00 49913 /usr/lib/libXcursor.so.1.0.2 b5c3a000-b5c3b000 rw-p 00007000 fd:00 49913 /usr/lib/libXcursor.so.1.0.2 b5c3b000-b5c58000 r-xp 00000000 09:02 466930 /lib/libgcc_s.so.1 b5c58000-b5c59000 rw-p 0001c000 09:02 466930 /lib/libgcc_s.so.1 b5c59000-b5c5b000 rw-p 00000000 00:00 0 b5c5b000-b7121000 r-xp 00000000 fd:00 49164 /usr/lib/libnvidia-glcore.so.256.53 b7121000-b7178000 rwxp 014c6000 fd:00 49164 /usr/lib/libnvidia-glcore.so.256.53 b7178000-b7188000 rwxp 00000000 00:00 0 b7188000-b7189000 r-xp 00000000 fd:00 49193 /usr/lib/tls/libnvidia-tls.so.256.53 b7189000-b718a000 rw-p 00000000 fd:00 49193 /usr/lib/tls/libnvidia-tls.so.256.53 b718a000-b718b000 rw-p 00000000 00:00 0 b718b000-b7190000 r-xp 00000000 fd:00 50172 /usr/lib/libfontenc.so.1.0.0 b7190000-b7191000 rw-p 00005000 fd:00 50172 /usr/lib/libfontenc.so.1.0.0 b7191000-b71a1000 r-xp 00000000 09:02 466849 /lib/libbz2.so.1.0.4 b71a1000-b71a2000 rw-p 00010000 09:02 466849 /lib/libbz2.so.1.0.4 b71a2000-b71b5000 r-xp 00000000 fd:00 52002 /usr/lib/libz.so.1.2.3.4 b71b5000-b71b6000 rw-p 00013000 fd:00 52002 /usr/lib/libz.so.1.2.3.4 b71b6000-b722a000 r-xp 00000000 fd:00 51162 /usr/lib/libfreetype.so.6.6.0 b722a000-b722e000 rw-p 00073000 fd:00 51162 /usr/lib/libfreetype.so.6.6.0 b722e000-b7246000 r-xp 00000000 fd:00 49652 /usr/lib/libxcb.so.1.1.0 b7246000-b7247000 rw-p 00017000 fd:00 49652 /usr/lib/libxcb.so.1.1.0 b7247000-b7248000 rw-p 00000000 00:00 0 b7248000-b724b000 r-xp 00000000 fd:00 54148 /usr/lib/libgpg-error.so.0.4.0 b724b000-b724c000 rw-p 00002000 fd:00 54148 /usr/lib/libgpg-error.so.0.4.0 b724c000-b738c000 r-xp 00000000 09:02 467095 /lib/i686/cmov/libc-2.11.3.so

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  • 11gR2 RAC ASM????

    - by Liu Maclean(???)
    11gR2 RAC?ocr?votedisk???????ASM??, ????10g??????2?RAC????????????,  ?? 11gR2 ?ASM?spfile??????ASM diskgroup???????ASM??????? ????????????,????? ASM?????mount diskgroup??????diskgroup????, ??ASM??????ASM spfile????????,?2???????? ????T.askmaclean.com?????ASM?????: hello maclean, ??spfile??ASMCMD> spget+CRSDG/rac/asmparameterfile/registry.253.787925627?????,ASM ?????ORACLE instance,?????????????diskgroup,????????????????????????????thanks.! ?????????: ?11.2??Oracle Cluterware??voting disk files?????????11.1?10.2????,11.2??voting disk file??????OCR?, ?????11.2??ocr?votedisk?????ASM? , ???11.2?voting disk file??GPNP profile??CSS voting file discovery string???? CSS voting disk file?discovery string???ASM,??????ASM discovery string???  ????????udev???????ASM???LUN, ??udev????????/dev/rasm-disk* , ????gpnptool get????gpnp profile: [grid@maclean1 trace]$ gpnptool get Warning: some command line parameters were defaulted. Resulting command line: /g01/grid/app/11.2.0/grid/bin/gpnptool.bin get -o- <?xml version="1.0" encoding="UTF-8"?><gpnp:GPnP-Profile Version="1.0" xmlns="http://www.grid-pnp.org/2005/11/gpnp-profile" xmlns:gpnp="http://www.grid-pnp.org/2005/11/gpnp-profile" xmlns:orcl="http://www.oracle.com/gpnp/2005/11/gpnp-profile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.grid-pnp.org/2005/11/gpnp-profile gpnp-profile.xsd" ProfileSequence="9" ClusterUId="452185be9cd14ff4ffdc7688ec5439bf" ClusterName="maclean-cluster" PALocation=""><gpnp:Network-Profile><gpnp:HostNetwork id="gen" HostName="*"><gpnp:Network id="net1" IP="192.168.1.0" Adapter="eth0" Use="public"/><gpnp:Network id="net2" IP="172.168.1.0" Adapter="eth1" Use="cluster_interconnect"/></gpnp:HostNetwork></gpnp:Network-Profile>< orcl:CSS-Profile id="css" DiscoveryString="+asm" LeaseDuration="400"/><orcl:ASM-Profile id="asm" DiscoveryString="/dev/rasm*" SPFile="+SYSTEMDG/maclean-cluster/asmparameterfile/registry.253.788682933"/>< ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#"><ds:SignedInfo><ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/><ds:SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"/><ds:Reference URI=""><ds:Transforms><ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/><ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"> <InclusiveNamespaces xmlns="http://www.w3.org/2001/10/xml-exc-c14n#" PrefixList="gpnp orcl xsi"/></ds:Transform></ds:Transforms>< ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/><ds:DigestValue>L1SLg10AqGEauCQ4ne9quucITZA=</ds:DigestValue>< /ds:Reference></ds:SignedInfo><ds:SignatureValue>rTyZm9vfcQCMuian6isnAThUmsV4xPoK2fteMc1l0GIvRvHncMwLQzPM/QrXCGGTCEvgvXzUPEKzmdX2oy5vLcztN60UHr6AJtA2JYYodmrsFwEyVBQ1D6wH+HQiOe2SG9UzdQnNtWSbjD4jfZkeQWyMPfWdKm071Ek0Rfb4nxE=</ds:SignatureValue></ds:Signature></gpnp:GPnP-Profile> Success. ?????2???: <orcl:CSS-Profile id=”css” DiscoveryString=”+asm” LeaseDuration=”400?/>==»css voting disk??+ASM<orcl:ASM-Profile id=”asm” DiscoveryString=”/dev/rasm*” SPFile=”+SYSTEMDG/maclean-cluster/asmparameterfile/registry.253.788682933?/>==»??????ASM?DiscoveryString=”/dev/rasm*”,?ASM??????????????,SPFILE???ASM Parameter FILE?ALIAS ???????GPNP???ASM Parameter FILE?ALIAS,?????ASM???????SPFILE,???Diskgroup?Mount???????ASM ALIAS?????? ??????+SYSTEMDG/maclean-cluster/asmparameterfile/registry.253.788682933??SPFILE?ASM??????: [grid@maclean1 wallets]$ sqlplus / as sysasm SQL*Plus: Release 11.2.0.3.0 Production on Tue Jul 17 05:45:35 2012 Copyright (c) 1982, 2011, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production With the Real Application Clusters and Automatic Storage Management options SQL> set linesize 140 pagesize 1400 col "FILE NAME" format a40 set head on select NAME "FILE NAME", AU_KFFXP "AU NUMBER", NUMBER_KFFXP "FILE NUMBER", DISK_KFFXP "DISK NUMBER" from x$kffxp, v$asm_alias where GROUP_KFFXP = GROUP_NUMBER and NUMBER_KFFXP = FILE_NUMBER and name in ('REGISTRY.253.788682933') order by DISK_KFFXP,AU_KFFXP; FILE NAME AU NUMBER FILE NUMBER DISK NUMBER ---------------------------------------- ---------- ----------- ----------- REGISTRY.253.788682933 39 253 1 REGISTRY.253.788682933 35 253 3 REGISTRY.253.788682933 35 253 4 SQL> col path for a50 SQL> select disk_number,path from v$asm_disk where disk_number in (1,3,4) and GROUP_NUMBER=3; DISK_NUMBER PATH ----------- -------------------------------------------------- 3 /dev/rasm-diske 4 /dev/rasm-diskf 1 /dev/rasm-diskc ?????ASM SPFILE??????(redundancy=high),????? /dev/rasm-diskc?AU=39?/dev/rasm-diske AU=35?/dev/rasm-diskf AU=35? ????kfed?????????ASM DISK?header: [grid@maclean1 wallets]$ kfed read /dev/rasm-diske|grep spfile kfdhdb.spfile: 35 ; 0x0f4: 0x00000023 [grid@maclean1 wallets]$ kfed read /dev/rasm-diskc|grep spfile kfdhdb.spfile: 39 ; 0x0f4: 0x00000027 [grid@maclean1 wallets]$ kfed read /dev/rasm-diskf|grep spfile kfdhdb.spfile: 35 ; 0x0f4: 0x00000023 ????ASM disk header?kfdhdb.spfile??ASM SPFILE???DISK??AU NUMBER????, ASM???????????GPNP PROFILE?? DiscoveryString?????????,????ASM disk header?????kfdhdb.spfile??????,?????MOUNT DISKGROUP??????ASM SPFILE,?????ASM, ?????????????????

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  • Ubuntu 10.10 Ad-Hoc Setup (from Wireless Router, to Ubuntu Server/Desktop to Wireless Router)

    - by user60375
    Okay, so I know there are different approaches for this, but I will explain my story briefly before getting to the technical stuff. My fiancée and I are going through some financial issues (as I assume a lot of us are). We ended up having to move from our house and stay with some friends/family for 6 months, just to get ourselves caught up. (Medical bills, among other issues,etc). So this is where it gets fun. At our friends house, we are staying in the loft setup which is not near the cable modem and wireless router. I have a "hand-crafted" media center running XBMC, an Ubuntu 10.10 Server/Desktop (multi-purpose, very powerful and tons drive space), two working laptops, a between the two of us we have multiple wireless devices/phones. Now our friends Wireless router doesn't have any options for assigning IP addresses, but my router does. My current setup is: Friends Cable Modem -- Friend's Wireless Router -- Ubuntu 10.10 Server -- My Wireless Router (local-link from Friend's wireless (incoming) to sharing connection on ETH0 (outgoing)) -- to all devices. (Wireless Modem, Ubuntu Server that share's it's wireless incoming connection to the ethernet port my Wireless router share's with the rest of the devices). I setup my router to use default settings from my friend's router, using Google's DNS on my router (disabled DNS setup on Ubuntu Server), everything is assigned nicely and runs smooth. My Ubuntu server was given the address 10.42.43.1 (assuming standard from Network-Manager). (On the Ubuntu machine that shares to my wireless router; I have some server apps installed, but mainly just use Samba/NFS/Tangerine action. My problem/goal is that every device has no problem of accessing the internet from my router, the media-center has an assigned ip address, all services from all devices (ZeroConf, Avanhi, Bonjour, GIT, SSH, FTP, Apache2, etc) all work correctly except from my Ubuntu Server (which serves the wireless connection to ETH0 to another Wireless Router). The Ubuntu 10.10 Server/Desktop is not broadcasting anything (the Zeroconf Service Discovery 0.4 Gnome Applet shows the services from the Ubuntu server but no other computers can see them). I can access it from my Media-Center (Running Xbuntu 10.04) if I direct it to 10.42.43.1, no problem. But I cannot access Tangerine (Daapd) and the Samba shares do not show up on any computers for 10.42.43.1 (not in the WORKGROUP which Samba is setup simple and default but I can direct computers to that address and the shares will add except on a damn Windows 7 parition). Is this an issue with how I have my router setup and possible the gateway? An issue with Network-Manager? And issue with my Ubuntu Server/Desktop? I know there is a lot to that, but it's simpler than I probably have explained? Any help would be appreciated. If you need more details, I can provide them. If there is a better way of my attempting this home-network, please let me know. Thanks in advance for the help.

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  • Yet another (13)Permission denied error on Apache2 server

    - by lollercoaster
    I just can't figure it out. I'm running apache2 on a Ubuntu 10.04 i386 server. Whenever I visit my server (has an IP address, and is connected to internet with static IP xxx.xxx.xxx.xxx) so that's not the problem) in browser, mysub.domain.edu (renamed here), I get the following: Forbidden You don't have permission to access /index.html on this server The apache2 error log confirms this: [Mon Apr 18 02:38:20 2011] [error] [client zzz.zzz.zzz.zzz] (13)Permission denied: access to / denied I'll try to provide all necessary information below: 1) Contents of /etc/apache2/httpd.conf DirectoryIndex index.html index.php 2) Contents of /etc/apache2/sites-available/default <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /home/myusername/htdocs <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory "/home/myusername/htdocs/"> Options Indexes FollowSymLinks MultiViews AllowOverride None order allow,deny allow from all DirectoryIndex index.html index.php Satisfy any </Directory> ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> AllowOverride None Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Allow from all </Directory> ErrorLog /var/log/apache2/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog /var/log/apache2/access.log combined Alias /doc/ "/usr/share/doc/" <Directory "/usr/share/doc/"> Options Indexes MultiViews FollowSymLinks AllowOverride None Order deny,allow Deny from all Allow from 127.0.0.0/255.0.0.0 ::1/128 </Directory> ServerName mysub.domain.edu </VirtualHost> 3) Contents of /etc/apache2/sites-enabled/000-default <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /home/myusername/htdocs <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory "/home/myusername/htdocs/"> Options Indexes FollowSymLinks MultiViews AllowOverride None order allow,deny allow from all DirectoryIndex index.html index.php Satisfy any </Directory> ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> AllowOverride None Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Allow from all </Directory> ErrorLog /var/log/apache2/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog /var/log/apache2/access.log combined Alias /doc/ "/usr/share/doc/" <Directory "/usr/share/doc/"> Options Indexes MultiViews FollowSymLinks AllowOverride None Order deny,allow Deny from all Allow from 127.0.0.0/255.0.0.0 ::1/128 </Directory> ServerName mysub.domain.edu </VirtualHost> 4) Result of ls -l (when I'm using sudo -i to be root): root@myserver:/home/myusername# ls -l total 4 drwxr-xr-x 2 www-data root 4096 2011-04-18 03:04 htdocs 5) ps auxwww | grep -i apache root@myserver:/home# ps auxwww | grep -i apache root 15121 0.0 0.4 5408 2544 ? Ss 16:55 0:00 /usr/sbin/apache2 -k start www-data 15122 0.0 0.3 5180 1760 ? S 16:55 0:00 /usr/sbin/apache2 -k start www-data 15123 0.0 0.5 227020 2788 ? Sl 16:55 0:00 /usr/sbin/apache2 -k start www-data 15124 0.0 0.5 227020 2864 ? Sl 16:55 0:00 /usr/sbin/apache2 -k start root 29133 0.0 0.1 3320 680 pts/0 R+ 16:58 0:00 grep --color=auto -i apache 6) ls -al /home/myusername/htdocs/ root@myserver:/# ls -al /home/myusername/htdocs/ total 20 drwxr-xr-x 2 www-data root 4096 2011-04-18 03:04 . drw-r--r-- 4 myusername myusername 4096 2011-04-18 02:13 .. -rw-r--r-- 1 root root 69 2011-04-18 02:14 index.html I'm not currently using any .htaccess files in my web root (htdocs) folder in my user folder. I don't know what is wrong, I've been trying to fix his for over 12 hours and I've gotten nowhere. If you have any suggestions, I'm all ears...

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  • Hudson on debian lenny

    - by Laurent
    Hello, I installed Hudson deamon on one server (running on debian lenny testing) some time ago. All was working until I perform an upgrade. At this time Hudson isn't accessible at port 8080 (which is the default port used). I have looked for iptables problems, however port 8080 is open in INPUT and OUTPUT. Configuration file in /etc/default/hudson seems okay, I haven't touch it. And if I do a ps aux | grep hudson, hudson deamon is running. Update 1: What is really strange for me is that in /var/log/hudson/hudson.log I get no error : [Winstone 2010/02/10 17:10:04] - Control thread shutdown successfully [Winstone 2010/02/10 17:10:04] - Winstone shutdown successfully Running from: /usr/share/hudson/hudson.war [Winstone 2010/02/10 17:10:43] - Beginning extraction from war file hudson home directory: /var/lib/hudson [Winstone 2010/02/10 17:10:44] - HTTP Listener started: port=8080 [Winstone 2010/02/10 17:10:44] - AJP13 Listener started: port=8009 [Winstone 2010/02/10 17:10:44] - Winstone Servlet Engine v0.9.10 running: controlPort=disabled 10 févr. 2010 17:10:44 hudson.model.Hudson$4 onAttained INFO: Started initialization 10 févr. 2010 17:10:44 hudson.model.Hudson$4 onAttained INFO: Listed all plugins 10 févr. 2010 17:10:44 hudson.model.Hudson$4 onAttained INFO: Prepared all plugins 10 févr. 2010 17:10:44 hudson.model.Hudson$4 onAttained INFO: Started all plugins 10 févr. 2010 17:10:46 hudson.model.Hudson$4 onAttained INFO: Loaded all jobs 10 févr. 2010 17:10:46 hudson.model.Hudson$4 onAttained INFO: Completed initialization 10 févr. 2010 17:10:47 org.springframework.context.support.AbstractApplicationContext prepareRefresh INFO: Refreshing org.springframework.web.context.support.StaticWebApplicationContext@caa559d: display name [Root WebApplicationContext]; startup date [Wed Feb 10 17:10:47 CET 2010]; root of context hierarchy 10 févr. 2010 17:10:47 org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory INFO: Bean factory for application context [org.springframework.web.context.support.StaticWebApplicationContext@caa559d]: org.springframework.beans.factory.support.DefaultListableBeanFactory@40d2f5f1 10 févr. 2010 17:10:47 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@40d2f5f1: defining beans [daoAuthenticationProvider,authenticationManager,userDetailsService]; root of factory hierarchy 10 févr. 2010 17:10:47 org.springframework.context.support.AbstractApplicationContext prepareRefresh INFO: Refreshing org.springframework.web.context.support.StaticWebApplicationContext@4d88a387: display name [Root WebApplicationContext]; startup date [Wed Feb 10 17:10:47 CET 2010]; root of context hierarchy 10 févr. 2010 17:10:47 org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory INFO: Bean factory for application context [org.springframework.web.context.support.StaticWebApplicationContext@4d88a387]: org.springframework.beans.factory.support.DefaultListableBeanFactory@6153e0c0 10 févr. 2010 17:10:47 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@6153e0c0: defining beans [filter,legacy]; root of factory hierarchy 10 févr. 2010 17:10:47 hudson.TcpSlaveAgentListener <init> INFO: JNLP slave agent listener started on TCP port 59750 Update 2: What I get with lsof -i -n -P | grep hudson: java 28985 hudson 97u IPv6 2002707 0t0 TCP *:8080 (LISTEN) java 28985 hudson 99u IPv6 2002708 0t0 TCP *:8009 (LISTEN) java 28985 hudson 147u IPv6 2002711 0t0 TCP *:59750 (LISTEN) java 28985 hudson 150u IPv6 2002712 0t0 UDP *:33848 I don't know what I can verify. Does someone has an idea in order to help me to resolve this problem ?

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  • Rsync: how to mount truecrypt on-the-fly on the receiving side?

    - by deepc
    The short version: how can I keep an rsync backup on a truecrypt volume? The hard part is to mount/unmount this volume on the fly when it is needed for rsync. Details This is my current backup configuration (which works fairly well for the most part): backup source is on Win7 64 bit, destination is a remote Linux box (Debian) actual data transfer is done by rsync via ssh (cwRsync with cygwin) rsync daemon is started on demand via ssh On the Linux box the backup is protected by file permissions only. I want to increase security here and put the backup into a truecrypt volume. I can fuse-mount that volume manually in the shell. The question is now how can I make rsync not only open an ssh connection and starting the rsync daemon, but also to mount the truecrypt volume before (and unmount it after)? My money is on option --rsync-path which can be used to pass a command line to ssh - provided that stdin and stdout still work the same. I guess that command would have to be a shell script. Is this possible, and what would the script look like? For reference, here's a quote of that option: --rsync-path=PROGRAM Use this to specify what program is to be run on the remote machine to start-up rsync. Often used when rsync is not in the default remote-shell's path (e.g. --rsync-path=/usr/local/bin/rsync). Note that PROGRAM is run with the help of a shell, so it can be any program, script, or command sequence you'd care to run, so long as it does not corrupt the standard-in & standard-out that rsync is using to communicate. One tricky example is to set a different default directory on the remote machine for use with the --relative option. For instance: rsync -avR --rsync-path="cd /a/b && rsync" host:c/d /e/ This is the full rsync man page. Truecrypt volume auto-mount Solved! Turns out this option is actually key to auto-mounting the truecrypt volume on the remote side. The following command line does the trick (one line!): rsync $options -e "ssh -p $port -i ../.ssh/id_dsa" --rsync-path="/usr/local/bin/truecrypt -d && /usr/local/bin/truecrypt --fs-options=rw,sync,utf8,uid=$UID,umask=0007 --non-interactive -p $password $pathToVolume $remoteMountDir && rsync" $localSourceDir $user:$remoteMountMountDir Truecrypt volume auto-dismount Still open: how can I unmount the volume when rsync is done? Not sure if the following makes sense to anyone but I give it a try... Right now I am unmounting (truecrypt -d), then mounting again, then continuing with rsync. At this time rsync needs to do its thing but I dont know when its done. Adding ... rsync && truecrypt -d to the command line does not work because then the rsync daemon does not start. This is because rsync starts the daemon with parameter --server on the remote side and that parameter would go to the final truecrypt -d.

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  • Error installing pkgconfig via macports

    - by Greg K
    I installed Macports 1.8.2 from a DMG. That seemed to install fine. I ran sudo port selfupdate to make sure my ports tree was current. I then tried to install bindfs as I want to mount some directories in my OS X file system (like you can do with mount --bind in linux). pkgconfig and macfuse are two dependencies of bindfs. I had trouble installing bindfs due to errors installing pkgconfig, so I tried to just install pkgconfig, here's the debug output from sudo port install pkgconfig: $ sudo port -d install pkgconfig DEBUG: Found port in file:///opt/local/var/macports/sources/rsync.macports.org/release/ports/devel/pkgconfig DEBUG: Changing to port directory: /opt/local/var/macports/sources/rsync.macports.org/release/ports/devel/pkgconfig DEBUG: OS Platform: darwin DEBUG: OS Version: 10.3.0 DEBUG: Mac OS X Version: 10.6 DEBUG: System Arch: i386 DEBUG: setting option os.universal_supported to yes DEBUG: org.macports.load registered provides 'load', a pre-existing procedure. Target override will not be provided DEBUG: org.macports.unload registered provides 'unload', a pre-existing procedure. Target override will not be provided DEBUG: org.macports.distfiles registered provides 'distfiles', a pre-existing procedure. Target override will not be provided DEBUG: adding the default universal variant DEBUG: Reading variant descriptions from /opt/local/var/macports/sources/rsync.macports.org/release/ports/_resources/port1.0/variant_descriptions.conf DEBUG: Requested variant darwin is not provided by port pkgconfig. DEBUG: Requested variant i386 is not provided by port pkgconfig. DEBUG: Requested variant macosx is not provided by port pkgconfig. ---> Computing dependencies for pkgconfig DEBUG: Executing org.macports.main (pkgconfig) DEBUG: Skipping completed org.macports.fetch (pkgconfig) DEBUG: Skipping completed org.macports.checksum (pkgconfig) DEBUG: Skipping completed org.macports.extract (pkgconfig) DEBUG: Skipping completed org.macports.patch (pkgconfig) ---> Configuring pkgconfig DEBUG: Using compiler 'Mac OS X gcc 4.2' DEBUG: Executing org.macports.configure (pkgconfig) DEBUG: Environment: CFLAGS='-O2 -arch x86_64' CPPFLAGS='-I/opt/local/include' CXXFLAGS='-O2 -arch x86_64' MACOSX_DEPLOYMENT_TARGET='10.6' CXX='/usr/bin/g++-4.2' F90FLAGS='-O2 -m64' LDFLAGS='-L/opt/local/lib' OBJC='/usr/bin/gcc-4.2' FCFLAGS='-O2 -m64' INSTALL='/usr/bin/install -c' OBJCFLAGS='-O2 -arch x86_64' FFLAGS='-O2 -m64' CC='/usr/bin/gcc-4.2' DEBUG: Assembled command: 'cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_devel_pkgconfig/work/pkg-config-0.23" && ./configure --prefix=/opt/local --enable-indirect-deps --with-pc-path=/opt/local/lib/pkgconfig:/opt/local/share/pkgconfig' checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for gawk... no checking for mawk... no checking for nawk... no checking for awk... awk checking whether make sets $(MAKE)... no checking whether to enable maintainer-specific portions of Makefiles... no checking build system type... i386-apple-darwin10.3.0 checking host system type... i386-apple-darwin10.3.0 checking for style of include used by make... none checking for gcc... /usr/bin/gcc-4.2 checking for C compiler default output file name... configure: error: C compiler cannot create executables See `config.log' for more details. Error: Target org.macports.configure returned: configure failure: shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_devel_pkgconfig/work/pkg-config-0.23" && ./configure --prefix=/opt/local --enable-indirect-deps --with-pc-path=/opt/local/lib/pkgconfig:/opt/local/share/pkgconfig " returned error 77 DEBUG: Backtrace: configure failure: shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_devel_pkgconfig/work/pkg-config-0.23" && ./configure --prefix=/opt/local --enable-indirect-deps --with-pc-path=/opt/local/lib/pkgconfig:/opt/local/share/pkgconfig " returned error 77 while executing "$procedure $targetname" Warning: the following items did not execute (for pkgconfig): org.macports.activate org.macports.configure org.macports.build org.macports.destroot org.macports.install Error: Status 1 encountered during processing. I have only recently installed Xcode 3.2.2 (prior to installing macports). Am I right in thinking this the issue here: configure: error: C compiler cannot create executables

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  • DCOM Authentication Fails to use Kerberos, Falls back to NTLM

    - by Asa Yeamans
    I have a webservice that is written in Classic ASP. In this web service it attempts to create a VirtualServer.Application object on another server via DCOM. This fails with Permission Denied. However I have another component instantiated in this same webservice on the same remote server, that is created without problems. This component is a custom-in house component. The webservice is called from a standalone EXE program that calls it via WinHTTP. It has been verified that WinHTTP is authenticating with Kerberos to the webservice successfully. The user authenticated to the webservice is the Administrator user. The EXE to webservice authentication step is successful and with kerberos. I have verified the DCOM permissions on the remote computer with DCOMCNFG. The default limits allow administrators both local and remote activation, both local and remote access, and both local and remote launch. The default component permissions allow the same. This has been verified. The individual component permissions for the working component are set to defaults. The individual component permissions for the VirtualServer.Application component are also set to defaults. Based upon these settings, the webservice should be able to instantiate and access the components on the remote computer. Setting up a Wireshark trace while running both tests, one with the working component and one with the VirtualServer.Application component reveals an intresting behavior. When the webservice is instantiating the working, custom, component, I can see the request on the wire to the RPCSS endpoint mapper first perform the TCP connect sequence. Then I see it perform the bind request with the appropriate security package, in this case kerberos. After it obtains the endpoint for the working DCOM component, it connects to the DCOM endpoint authenticating again via Kerberos, and it successfully is able to instantiate and communicate. On the failing VirtualServer.Application component, I again see the bind request with kerberos go to the RPCC endpoing mapper successfully. However, when it then attempts to connect to the endpoint in the Virtual Server process, it fails to connect because it only attempts to authenticate with NTLM, which ultimately fails, because the webservice does not have access to the credentials to perform the NTLM hash. Why is it attempting to authenticate via NTLM? Additional Information: Both components run on the same server via DCOM Both components run as Local System on the server Both components are Win32 Service components Both components have the exact same launch/access/activation DCOM permissions Both Win32 Services are set to run as Local System The permission denied is not a permissions issue as far as I can tell, it is an authentication issue. Permission is denied because NTLM authentication is used with a NULL username instead of Kerberos Delegation Constrained delegation is setup on the server hosting the webservice. The server hosting the webservice is allowed to delegate to rpcss/dcom-server-name The server hosting the webservice is allowed to delegate to vssvc/dcom-server-name The dcom server is allowed to delegate to rpcss/webservice-server The SPN's registered on the dcom server include rpcss/dcom-server-name and vssvc/dcom-server-name as well as the HOST/dcom-server-name related SPNs The SPN's registered on the webservice-server include rpcss/webservice-server and the HOST/webservice-server related SPNs Anybody have any Ideas why the attempt to create a VirtualServer.Application object on a remote server is falling back to NTLM authentication causing it to fail and get permission denied? Additional information: When the following code is run in the context of the webservice, directly via a testing-only, just-developed COM component, it fails on the specified line with Access Denied. COSERVERINFO csi; csi.dwReserved1=0; csi.pwszName=L"terahnee.rivin.net"; csi.pAuthInfo=NULL; csi.dwReserved2=NULL; hr=CoGetClassObject(CLSID_VirtualServer, CLSCTX_ALL, &csi, IID_IClassFactory, (void **) &pClsFact); if(FAILED( hr )) goto error1; // Fails here with HRESULT_FROM_WIN32(ERROR_ACCESS_DENIED) hr=pClsFact->CreateInstance(NULL, IID_IUnknown, (void **) &pUnk); if(FAILED( hr )) goto error2; Ive also noticed that in the Wireshark Traces, i see the attempt to connect to the service process component only requests NTLMSSP authentication, it doesnt even attmept to use kerberos. This suggests that for some reason the webservice thinks it cant use kerberos...

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  • Useful Command-line Commands on Windows

    - by Sung Meister
    The aim for this Wiki is to promote using a command to open up commonly used applications without having to go through many mouse clicks - thus saving time on monitoring and troubleshooting Windows machines. Answer entries need to specify Application name Commands Screenshot (Optional) Shortcut to commands && - Command Chaining %SYSTEMROOT%\System32\rcimlby.exe -LaunchRA - Remote Assistance (Windows XP) appwiz.cpl - Programs and Features (Formerly Known as "Add or Remove Programs") appwiz.cpl @,2 - Turn Windows Features On and Off (Add/Remove Windows Components pane) arp - Displays and modifies the IP-to-Physical address translation tables used by address resolution protocol (ARP) at - Schedule tasks either locally or remotely without using Scheduled Tasks bootsect.exe - Updates the master boot code for hard disk partitions to switch between BOOTMGR and NTLDR cacls - Change Access Control List (ACL) permissions on a directory, its subcontents, or files calc - Calculator chkdsk - Check/Fix the disk surface for physical errors or bad sectors cipher - Displays or alters the encryption of directories [files] on NTFS partitions cleanmgr.exe - Disk Cleanup clip - Redirects output of command line tools to the Windows clipboard cls - clear the command line screen cmd /k - Run command with command extensions enabled color - Sets the default console foreground and background colors in console command.com - Default Operating System Shell compmgmt.msc - Computer Management control.exe /name Microsoft.NetworkAndSharingCenter - Network and Sharing Center control keyboard - Keyboard Properties control mouse(or main.cpl) - Mouse Properties control sysdm.cpl,@0,3 - Advanced Tab of the System Properties dialog control userpasswords2 - Opens the classic User Accounts dialog desk.cpl - opens the display properties devmgmt.msc - Device Manager diskmgmt.msc - Disk Management diskpart - Disk management from the command line dsa.msc - Opens active directory users and computers dsquery - Finds any objects in the directory according to criteria dxdiag - DirectX Diagnostic Tool eventvwr - Windows Event Log (Event Viewer) explorer . - Open explorer with the current folder selected. explorer /e, . - Open explorer, with folder tree, with current folder selected. F7 - View command history find - Searches for a text string in a file or files findstr - Find a string in a file firewall.cpl - Opens the Windows Firewall settings fsmgmt.msc - Shared Folders fsutil - Perform tasks related to FAT and NTFS file systems ftp - Transfers files to and from a computer running an FTP server service getmac - Shows the mac address(es) of your network adapter(s) gpedit.msc - Group Policy Editor gpresult - Displays the Resultant Set of Policy (RSoP) information for a target user and computer httpcfg.exe - HTTP Configuration Utility iisreset - To restart IIS InetMgr.exe - Internet Information Services (IIS) Manager 7 InetMgr6.exe - Internet Information Services (IIS) Manager 6 intl.cpl - Regional and Language Options ipconfig - Internet protocol configuration lusrmgr.msc - Local Users and Groups Administrator msconfig - System Configuration notepad - Notepad? ;) mmsys.cpl - Sound/Recording/Playback properties mode - Configure system devices more - Displays one screen of output at a time mrt - Microsoft Windows Malicious Software Removal Tool mstsc.exe - Remote Desktop Connection nbstat - displays protocol statistics and current TCP/IP connections using NBT ncpa.cpl - Network Connections netsh - Display or modify the network configuration of a computer that is currently running netstat - Network Statistics net statistics - Check computer up time net stop - Stops a running service. net use - Connects a computer to or disconnects a computer from a shared resource, or displays information about computer connections odbcad32.exe - ODBC Data Source Administrator pathping - A traceroute that collects detailed packet loss stats perfmon - Opens Reliability and Performance Monitor ping - Determine whether a remote computer is accessible over the network powercfg.cpl - Power management control panel applet quser - Display information about user sessions on a terminal server qwinsta - See disconnected remote desktop sessions reg.exe - Console Registry Tool for Windows regedit - Registry Editor rasdial - Connects to a VPN or a dialup network robocopy - Backup/Restore/Copy large amounts of files reliably rsop.msc - Resultant Set of Policy (shows the combined effect of all group policies active on the current system/login) runas - Run specific tools and programs with different permissions than the user's current logon provides sc - Manage anything you want to do with services. schtasks - Enables an administrator to create, delete, query, change, run and end scheduled tasks on a local or remote system. secpol.msc - Local Security Settings services.msc - Services control panel set - Displays, sets, or removes cmd.exe environment variables. set DIRCMD - Preset dir parameter in cmd.exe start - Starts a separate window to run a specified program or command start. - opens the current directory in the Windows Explorer. shutdown.exe - Shutdown or Reboot a local/remote machine subst.exe - Associates a path with a drive letter, including local drives systeminfo -Displays a comprehensive information about the system taskkill - terminate tasks by process id (PID) or image name tasklist.exe - List Processes on local or a remote machine taskmgr.exe - Task Manager telephon.cpl - Telephone and Modem properties timedate.cpl - Date and Time title - Change the title of the CMD window you have open tracert - Trace route wmic - Windows Management Instrumentation Command-line winver.exe - Find Windows Version wscui.cpl - Windows Security Center wuauclt.exe - Windows Update AutoUpdate Client

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  • How to configure emacs by using this file?

    - by Andy Leman
    From http://public.halogen-dg.com/browser/alex-emacs-settings/.emacs?rev=1346 I got: (setq load-path (cons "/home/alex/.emacs.d/" load-path)) (setq load-path (cons "/home/alex/.emacs.d/configs/" load-path)) (defconst emacs-config-dir "~/.emacs.d/configs/" "") (defun load-cfg-files (filelist) (dolist (file filelist) (load (expand-file-name (concat emacs-config-dir file))) (message "Loaded config file:%s" file) )) (load-cfg-files '("cfg_initsplit" "cfg_variables_and_faces" "cfg_keybindings" "cfg_site_gentoo" "cfg_conf-mode" "cfg_mail-mode" "cfg_region_hooks" "cfg_apache-mode" "cfg_crontab-mode" "cfg_gnuserv" "cfg_subversion" "cfg_css-mode" "cfg_php-mode" "cfg_tramp" "cfg_killbuffer" "cfg_color-theme" "cfg_uniquify" "cfg_tabbar" "cfg_python" "cfg_ack" "cfg_scpaste" "cfg_ido-mode" "cfg_javascript" "cfg_ange_ftp" "cfg_font-lock" "cfg_default_face" "cfg_ecb" "cfg_browser" "cfg_orgmode" ; "cfg_gnus" ; "cfg_cyrillic" )) ; enable disabled advanced features (put 'downcase-region 'disabled nil) (put 'scroll-left 'disabled nil) (put 'upcase-region 'disabled nil) ; narrow cursor ;(setq-default cursor-type 'hbar) (cua-mode) ; highlight current line (global-hl-line-mode 1) ; AV: non-aggressive scrolling (setq scroll-conservatively 100) (setq scroll-preserve-screen-position 't) (setq scroll-margin 0) (custom-set-variables ;; custom-set-variables was added by Custom. ;; If you edit it by hand, you could mess it up, so be careful. ;; Your init file should contain only one such instance. ;; If there is more than one, they won't work right. '(ange-ftp-passive-host-alist (quote (("redbus2.chalkface.com" . "on") ("zope.halogen-dg.com" . "on") ("85.119.217.50" . "on")))) '(blink-cursor-mode nil) '(browse-url-browser-function (quote browse-url-firefox)) '(browse-url-new-window-flag t) '(buffers-menu-max-size 30) '(buffers-menu-show-directories t) '(buffers-menu-show-status nil) '(case-fold-search t) '(column-number-mode t) '(cua-enable-cua-keys nil) '(user-mail-address "[email protected]") '(cua-mode t nil (cua-base)) '(current-language-environment "UTF-8") '(file-name-shadow-mode t) '(fill-column 79) '(grep-command "grep --color=never -nHr -e * | grep -v .svn --color=never") '(grep-use-null-device nil) '(inhibit-startup-screen t) '(initial-frame-alist (quote ((width . 80) (height . 40)))) '(initsplit-customizations-alist (quote (("tabbar" "configs/cfg_tabbar.el" t) ("ecb" "configs/cfg_ecb.el" t) ("ange\\-ftp" "configs/cfg_ange_ftp.el" t) ("planner" "configs/cfg_planner.el" t) ("dired" "configs/cfg_dired.el" t) ("font\\-lock" "configs/cfg_font-lock.el" t) ("speedbar" "configs/cfg_ecb.el" t) ("muse" "configs/cfg_muse.el" t) ("tramp" "configs/cfg_tramp.el" t) ("uniquify" "configs/cfg_uniquify.el" t) ("default" "configs/cfg_font-lock.el" t) ("ido" "configs/cfg_ido-mode.el" t) ("org" "configs/cfg_orgmode.el" t) ("gnus" "configs/cfg_gnus.el" t) ("nnmail" "configs/cfg_gnus.el" t)))) '(ispell-program-name "aspell") '(jabber-account-list (quote (("[email protected]")))) '(jabber-nickname "AVK") '(jabber-password nil) '(jabber-server "halogen-dg.com") '(jabber-username "alex") '(remember-data-file "~/Plans/remember.org") '(safe-local-variable-values (quote ((dtml-top-element . "body")))) '(save-place t nil (saveplace)) '(scroll-bar-mode (quote right)) '(semantic-idle-scheduler-idle-time 432000) '(show-paren-mode t) '(svn-status-hide-unmodified t) '(tool-bar-mode nil nil (tool-bar)) '(transient-mark-mode t) '(truncate-lines f) '(woman-use-own-frame nil)) ; ?? ????? ??????? y ??? n? (fset 'yes-or-no-p 'y-or-n-p) (custom-set-faces ;; custom-set-faces was added by Custom. ;; If you edit it by hand, you could mess it up, so be careful. ;; Your init file should contain only one such instance. ;; If there is more than one, they won't work right. '(compilation-error ((t (:foreground "tomato" :weight bold)))) '(cursor ((t (:background "red1")))) '(custom-variable-tag ((((class color) (background dark)) (:inherit variable-pitch :foreground "DarkOrange" :weight bold)))) '(hl-line ((t (:background "grey24")))) '(isearch ((t (:background "orange" :foreground "black")))) '(message-cited-text ((((class color) (background dark)) (:foreground "SandyBrown")))) '(message-header-name ((((class color) (background dark)) (:foreground "DarkGrey")))) '(message-header-other ((((class color) (background dark)) (:foreground "LightPink2")))) '(message-header-subject ((((class color) (background dark)) (:foreground "yellow2")))) '(message-separator ((((class color) (background dark)) (:foreground "thistle")))) '(region ((t (:background "brown")))) '(tooltip ((((class color)) (:inherit variable-pitch :background "IndianRed1" :foreground "black"))))) The above is a python emacs configure file. Where should I put it to use it? And, are there any other changes I need to make?

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