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• Cisco adaptive security appliance is dropping packets where SYN flag is not set

  - by Brett Ryan

  We have an apache instance sitting inside our DMZ which is configured to proxy requests to an internal NATed tomcat instance inside our network. It works fine, but then all of a sudden requests from apache to the tomcat instance stop getting through with the following in the apache logs: [error] (70007)The timeout specified has expired: ajp_ilink_receive() can't receive header Investigating into the Cisco log viewer reveals the following: Error Message %ASA-6-106015: Deny TCP (no connection) from IP_address/port to IP_address/port flags tcp_flags on interface interface_name. Explanation The adaptive security appliance discarded a TCP packet that has no associated connection in the adaptive security appliance connection table. The adaptive security appliance looks for a SYN flag in the packet, which indicates a request to establish a new connection. If the SYN flag is not set, and there is not an existing connection, the adaptive security appliance discards the packet. Recommended Action None required unless the adaptive security appliance receives a large volume of these invalid TCP packets. If this is the case, trace the packets to the source and determine the reason these packets were sent. All are machines are virtualised using VMware, and by default machines have been using the Intel E1000 emulated NIC. Our network administrator has changed this to a VMXNET3 driver in an attempt to correct the problem, we just have to wait and see if the problem persists as it's an intermittent problem. Is there something else that could be causing this problem? This isn't the first service where we have had similar issues. Our apache host is running Ubuntu 11.10 with a kernel version of 3.0.0-17-server. We have also had this issue on RHEL5 (5.8) running kernel 2.6.18-308.16.1.el5, this machine also has the E1000 NIC. NOTE: I am not a network administrator and am a software architect and analyst programmer responsible for these systems.

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• Programmable Home Security Alarm [closed]

  - by stej

  I don't ask for recommendation! (just wanted to say that; anyway it doesn't matter now as the question is closed) I've seen some advertisements about home alarms that notifies me that something is happening in my house. None of them mentioned programmability (with real programming language like e.g C, assembler, whatever). As a programmer I'd like to have a possibility to add some behaviour, that is not part of the alarm itself. This might be: take snapshots of all cameras in a house and send it to some email send email, twitter message, skype message to some predefined account send email to a police (silly, I know) start turning the lights on and off (scary, right?) etc. (would be veeery challenging with assembler, I know; but lets suppose I can use some more high level language) I don't expect that there is a alarm system capable of this stuff, that's why I'm looking for a programmable module. Question: Is it even possible? Is it good idea (my program could crash and cause instability of the system).

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• My ASP.NET news sources

  - by Jon Galloway

  I just posted about the ASP.NET Daily Community Spotlight. I was going to list a bunch of my news sources at the end, but figured this deserves a separate post. I've been following a lot of development blogs for a long time - for a while I subscribed to over 1500 feeds and read them all. That doesn't scale very well, though, and it's really time consuming. Since the community spotlight requires an interesting ASP.NET post every day of the year, I've come up with a few sources of ASP.NET news. Top Link Blogs Chris Alcock's The Morning Brew is a must-read blog which highlights each day's best blog posts across the .NET community. He covers the entire Microsoft development, but generally any of the top ASP.NET posts I see either have already been listed on The Morning Brew or will be there soon. Elijah Manor posts a lot of great content, which is available in his Twitter feed at @elijahmanor, on his Delicious feed, and on a dedicated website - Web Dev Tweets. While not 100% ASP.NET focused, I've been appreciating Joe Stagner's Weekly Links series, partly since he includes a lot of links that don't show up on my other lists. Twitter Over the past few years, I've been getting more and more of my information from my Twitter network (as opposed to RSS or other means). Twitter is as good as your network, so if getting good information off Twitter sounds crazy, you're probably not following the right people. I already mentioned Elijah Manor (@elijahmanor). I follow over a thousand people on Twitter, so I'm not going to try to pick and choose a list, but one good way to get started building out a Twitter network is to follow active Twitter users on the ASP.NET team at Microsoft: @scottgu (well, not on the ASP.NET team, but their great grand boss, and always a great source of ASP.NET info) @shanselman @haacked @bradwilson @davidfowl @InfinitiesLoop @davidebbo @marcind @DamianEdwards @stevensanderson @bleroy @humancompiler @osbornm @anurse I'm sure I'm missing a few, and I'll update the list. Building a Twitter network that follows topics you're interested in allows you to use other tools like Cadmus to automatically summarize top content by leveraging the collective input of many users. Twitter Search with Topsy You can search Twitter for hashtags (like #aspnet, #aspnetmvc, and #webmatrix) to get a raw view of what people are talking about on Twitter. Twitter's search is pretty poor; I prefer Topsy. Here's an example search for the #aspnetmvc hashtag: http://topsy.com/s?q=%23aspnetmvc You can also do combined queries for several tags: http://topsy.com/s?q=%23aspnetmvc+OR+%23aspnet+OR+%23webmatrix Paper.li Paper.li is a handy service that builds a custom daily newspaper based on your social network. They've turned a lot of people off by automatically tweeting "The SuperDevFoo Daily is out!!!" messages (which can be turned off), but if you're ignoring them because of those message, you're missing out on a handy, free service. My paper.li page includes content across a lot of interests, including ASP.NET: http://paper.li/jongalloway When I want to drill into a specific tag, though, I'll just look at the Paper.li post for that hashtag. For example, here's the #aspnetmvc paper.li page: http://paper.li/tag/aspnetmvc Delicious I mentioned previously that I use Delicious for managing site links. I also use their network and search features. The tag based search is pretty good: Even better, though, is that I can see who's bookmarked these links, and add them to my Delicious network. After having built out a network, I can optimize by doing less searching and more leaching leveraging of collective intelligence. Community Sites I scan DotNetKicks, the weblogs.asp.net combined feed, and the ASP.NET Community page, CodeBetter, Los Techies,  CodeProject,  and DotNetSlackers from time to time. They're hit and miss, but they do offer more of an opportunity for finding original content which others may have missed. Terms of Enrampagement When someone's on a tear, I just manually check their sites more often. I could use RSS for that, but it changes pretty often. I just keep a mental note of people who are cranking out a lot of good content and check their sites more often. What works for you?

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• Screen scraping software that will traverse pages

  - by nilbus

  We're creating a mashup site that pulls information from many sources all over the web. Many of these sites don't provide RSS feeds or APIs to access the information they provide. This leaves us with screen scraping as our method for collecting the data. There are many scripting tools out there written in different scripting languages for screen scraping that require you to write scraping scripts in the language the scraper was written in. Scrapy, scrAPI, and scrubyt are a few written in Ruby and Python. There are other web-based tools I've seen like Dapper that create XML or RSS feeds based on a webpage. It has a beautiful web-based interface that requires no scripting skills to use. This would be a great tool, if it were able to traverse multiple pages to gather data from hundreds pages of results. We need something that will scrape information from paginated web sites, much like scrubyt, but with a user interface that a non-programmer could use. We'll script up our own solution if we need to, probably using scrubyt, but if there's a better solution out there, we want to use it. Does anything like this exist?

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• My Mother Bought a Droid

  - by Ben Griswold

  I converted to iPhone two years ago when I left my former employer and my Blackberry behind. The truth is I half-heartedly purchased my iPhone. It was a great looking device, but as far as I was concerned, it was a mere toy compared to my Blackberry.  I remember hiding the toy in my briefcase when attending business meetings because I didn’t consider it to be professional enough.  I’ve since owned all three generations of the iPhone and, well, iPhone seems to have caught on. I still miss the click of the Blackberry keyboard and the blinking red light letting me know that someone/something requires my attention, but I’m officially an iPhone fanboy now.  My mom called last weekend and asked if she should buy an iPhone. I talked her ear off about everything I love about iPhone. I went on for about twenty minutes. I couldn’t help myself. I mentioned everything from my podcast subscriptions to the application which manages my workouts.  I went as far as to say that someday all smart phones will be referred to as iPhones just like all tissues are referred to as Kleenex and all sodas are referred to as Cokes.  I was really on a roll and then I stopped. I had to…the call dropped.  There I was, strategically standing in the far corner of my backyard where I get the most reliable AT&T reception and the call drops in middle of my iPhone pitch.  Folks, I don’t care how good a salesperson you are, it’s tough to recover from a situation like this.   I dialed my mom back and jokingly asked if she was planning to make calls with her new phone. I explained that AT&T is bound to provide better service eventually but I’m not sure she should wait. After all, I have troubles with the network in San Diego and I can only image how bad it would be for her in Western Massachusetts. Mom called back a few days later exclaiming, “I bought a Droid! I love this phone! I haven’t done anything with it but make phone calls, but I love it.”  I had to laugh.  My mom made the right call (pun intended.)  The iPhone is an amazing device, but owners are constantly reminded that its core function (it’s a phone, remember?) is subpar.  If you love gadgets, you’re probably enthralled by iPhone’s many bells and whistles and, relatively speaking, the terrible phone service might not amount to much.  (Maybe it amounts to a rant on your blog.) The overall iPhone offering is so attractive that consumers are willing to wait for AT&T to straighten up their act or wait until Apple grants a choice of carriers.  But I don’t see either of these remedies coming soon. In the interim, I’m willing to take my iPhone for what it is and just continue to enjoy my favorite features while pretending that poor coverage isn’t a big deal. With any luck, more and more reasonable folks will recognize that Android Phones are legitimate players in the smart phone space, they will buy loads of them and there will become plenty of functional phones to borrow when my “phone” is showing zero bars.  Heck, I’m already covered when I visit my mom.

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• Collation errors in business

  - by Rob Farley

  At the PASS Summit last month, I did a set (Lightning Talk) about collation, and in particular, the difference between the “English” spoken by people from the US, Australia and the UK. One of the examples I gave was that in the US drivers might stop for gas, whereas in Australia, they just open the window a little. This is what’s known as a paraprosdokian, where you suddenly realise you misunderstood the first part of the sentence, based on what was said in the second. My current favourite is Emo Phillip’s line “I like to play chess with old men in the park, but it can be hard to find thirty-two of them.” Essentially, this a collation error, one that good comedians can get mileage from. Unfortunately, collation is at its worst when we have a computer comparing two things in different collations. They might look the same, and sound the same, but if one of the things is in SQL English, and the other one is in Windows English, the poor database server (with no sense of humour) will get suspicious of developers (who all have senses of humour, obviously), and declare a collation error, worried that it might not realise some nuance of the language. One example is the common scenario of a case-sensitive collation and a case-insensitive one. One may think that “Rob” and “rob” are the same, but the other might not. Clearly one of them is my name, and the other is a verb which means to steal (people called “Nick” have the same problem, of course), but I have no idea whether “Rob” and “rob” should be considered the same or not – it depends on the collation. I told a lie before – collation isn’t at its worst in the computer world, because the computer has the sense to complain about the collation issue. People don’t. People will say something, with their own understanding of what they mean. Other people will listen, and apply their own collation to it. I remember when someone was asking me about a situation which had annoyed me. They asked if I was ‘pissed’, and I said yes. I meant that I was annoyed, but they were asking if I’d been drinking. It took a moment for us to realise the misunderstanding. In business, the problem is escalated. A business user may explain something in a particular way, using terminology that they understand, but using words that mean something else to a technical person. I remember a situation with a checkbox on a form (back in VB6 days from memory). It was used to indicate that something was approved, and indicated whether a particular database field should store True or False – nothing more. However, the client understood it to mean that an entire workflow system would be implemented, with different users have permission to approve items and more. The project manager I’d just taken over from clearly hadn’t appreciated that, and I faced a situation of explaining the misunderstanding to the client. Lots of fun... Collation errors aren’t just a database setting that you can ignore. You need to remember that Americans speak a different type of English to Aussies and Poms, and techies speak a different language to their clients.

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• SQLAuthority News – Public Training Classes In Hyderabad 12-14 May – Microsoft SQL Server 2005/2008

  - by pinaldave

  After successfully delivering many corporate trainings as well as the private training Solid Quality Mentors, India is launching the Public Training in Hyderabad for SQL Server 2008 and SharePoint 2010. This is going to be one of the most unique and one-of-a-kind events in India where Solid Quality Mentors are offering public classes. I will be leading the training on Microsoft SQL Server 2005/2008 Query Optimization & Performance Tuning. This intensive, 3-day course intends to give attendees an in-depth look at Query Optimization and Performance Tuning in SQL Server 2005 and 2008. Designed to prepare SQL Server developers and administrators for a transition into SQL Server 2005 or 2008, the course covers the best practices for a variety of essential tasks in order to maximize the performance. At the end of the course, there would be daily discussions about your real-world problems and find appropriate solutions. Note: Scroll down for course fees, discount, dates and location. Do not forget to take advantage of Discount code ‘SQLAuthority‘. The training premises are very well-equipped as they will be having 1:1 computers. Every participant will be provided with printed course materials. I will pick up your entire lunch tab and we will have lots of SQL talk together. The best participant will receive a special gift at the end of the course. Even though the quality of the material to be delivered together with the course will be of extremely high standard, the course fees are set at a very moderate rate. The fee for the course is INR 14,000/person for the whole 3-day convention. At the rate of 1 USD = 44 INR, this fee converts to less than USD 300. At this rate, it is totally possible to fly from anywhere from the world to India and take the training and still save handsome pocket money. It would be even better if you register using the discount code “SQLAuthority“, for you will instantly get an INR 3000 discount, reducing the total cost of the training to INR 11,000/person for whole 3 days course. This is a onetime offer and will not be available in the future. Please note that there will be a 10.3% service tax on course fees. To register, either send an email to [email protected] or call +91 95940 43399. Feel free to drop me an email at [email protected] for any additional information and clarification. Training Date and Time: May 12-14, 2010 10 AM- 6 PM. Training Venue: Abridge Solutions, #90/B/C/3/1, Ganesh GHR & MSY Plaza, Vittalrao Nagar, Near Image Hospital, Madhapur, Hyderabad – 500 081. The details of the course is as listed below. Day 1 : Strengthen the basics along with SQL Server 2005/2008 New Features Module 01: Subqueries, Ranking Functions, Joins and Set Operations Module 02: Table Expressions Module 03: TOP and APPLY Module 04: SQL Server 2008 Enhancements Day 2: Query Optimization & Performance Tuning 1 Module 05: Logical Query Processing Module 06: Query Tuning Module 07:  Introduction to the Query Processor Module 08:  Review of common query coding which causes poor performance Day 3: Query Optimization & Performance Tuning 2 Module 09:  SQL Server Indexing and index maintenance Module 10:  Plan Guides, query hints, UDFs, and Computed Columns Module 11:  Understanding SQL Server Execution Plans Module 12: Real World Index and Optimization Tips Download the complete PDF brochure. We are also going to have SharePoint 2010 training by Joy Rathnayake on 10-11 May. All the details for discount applies to the same as well. Reference : Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQL Training, SQLAuthority News, T SQL, Technology

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• Understanding Collabnet&rsquo;s LDAP binding

  - by Robert May

  We want to use both subversion usernames and passwords as well as Active Directory for our authentication on our Collabnet subversion server. This has proven to be more of a challenge than we thought, mostly because Collabnet’s documentation is pretty poor. To supplement that documentation, I add my own. The first thing to understand is that the attribute that you specify in the LDAP Login Attribute ONLY applies to lookups done for the user.  It does NOT apply to the LDAP Bind DN field.  Second, know that the debug logs (error is the one you want) don’t give you debug information for the bind DN, just the login attempts.  Third, by default, Active Directory does not allow anonymous binds, so you MUST put in a user that has the authority to query the Active Directory ldap. Because of these items, the values to set in those fields can be somewhat confusing.  You’ll want to have ADSI Edit handy (I also used ldp, which is installed by default on server 2008), since ADSI Edit can help you find stuff in your active directory.  Be careful, you can also break stuff. Here’s what should go into those fields. LDAP Security Level:  Should be set to None LDAP Server Host:  Should be set to the full name of a domain controller in your domain.  For example, dc.mydomain.com LDAP Server Port:  Should be set to 3268.  The default port of 389 will only query that specific server, not the global catalog.  By setting it to 3268, the global catalog will be queried, which is probably what you want. LDAP Base DN:  Should be set to the location where you want the search for users to begin.  By default, the search scope is set to sub, so all child organizational units below this setting will be searched.  In my case, I had created an OU specifically for users for group policies.  My value ended up being:  OU=MyOu,DC=domain,DC=org.   However, if you’re pointing it to the default Users folder, you may end up with something like CN=Users,DC=domain,DC=org (or com or whatever).  Again, use ADSI edit and use the Distinguished Name that it shows. LDAP Bind DN:  This needs to be the Distinguished Name of the user that you’re going to use for binding (i.e. the user you’ll be impersonating) for doing queries.  In my case, it ended up being CN=svn svn,OU=MyOu,DC=domain,DC=org.  Why the double svn, you might ask?  That’s because the first and last name fields are set to svn and by default, the distinguished name is the first and last name fields!  That’s important.  Its NOT the username or account name!  Again, use ADSI edit, browse to the username you want to use, right click and select properties, and then search the attributes for the Distinguished Name.  Once you’ve found that, select it and click View and you can copy and paste that into this field. LDAP Bind Password:  This is the password for the account in the Bind DN LDAP login Attribute: sAMAccountName.  If you leave this blank, uid is used, which may not even be set.  This tells it to use the Account Name field that’s defined under the account tab for users in Active Directory Users and Computers.  Note that this attribute DOES NOT APPLY to the LDAP Bind DN.  You must use the full distinguished name of the bind DN.  This attribute allows users to type their username and password for authentication, rather than typing their distinguished name, which they probably don’t know. LDAP Search Scope:  Probably should stay at sub, but could be different depending on your situation. LDAP Filter:  I left mine blank, but you could provide one to limit what you want to see.  LDP would be helpful for determining what this is. LDAP Server Certificate Verification:  I left it checked, but didn’t try it without it being checked. Hopefully, this will save some others pain when trying to get Collabnet setup. Technorati Tags: Subversion,collabnet

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• From the Tips Box: Pre-installation Prep Work Makes Service Pack Upgrades Smoother

  - by Jason Fitzpatrick

  Last month Microsoft rolled out Windows 7 Service Pack 1 and, like many SP releases, quite a few people are hanging back to see what happens. If you want to update but still error on the side of caution, reader Ron Troy  offers a step-by-step guide. Ron’s cautious approach does an excellent job minimizing the number of issues that could crop up in a Service Pack upgrade by doing a thorough job updating your driver sets and clearing out old junk before you roll out the update. Read on to see how he does it: Just wanted to pass on a suggestion for people worried about installing Service Packs.  I came up with a ‘method’ a couple years back that seems to work well. Run Windows / Microsoft Update to get all updates EXCEPT the Service Pack. Use Secunia PSI to find any other updates you need. Use CCleaner or the Windows disk cleanup tools to get rid of all the old garbage out there.  Make sure that you include old system updates. Obviously, back up anything you really care about.  An image backup can be real nice to have if things go wrong. Download the correct SP version from Microsoft.com; do not use Windows / Microsoft Update to get it.  Make sure you have the 64 bit version if that’s what you have installed on your PC. Make sure that EVERYTHING that affects the OS is up to date.  That includes all sorts of drivers, starting with video and audio.  And if you have an Intel chipset, use the Intel Driver Utility to update those drivers.  It’s very quick and easy.  For the video and audio drivers, some can be updated by Intel, some by utilities on the vendor web sites, and some you just have to figure out yourself.  But don’t be lazy here; old drivers and Windows Service Packs are a poor mix. If you have 3rd party software, check to see if they have any updates for you.  They might not say that they are for the Service Pack but you cut your risk of things not working if you do this. Shut off the Antivirus software (especially if 3rd party). Reboot, hitting F8 to get the SafeMode menu.  Choose SafeMode with Networking. Log into the Administrator account to ensure that you have the right to install the SP. Run the SP.  It won’t be very fancy this way.  Maybe 45 minutes later it will reboot and then finish configuring itself, finally letting you log in. Total installation time on most of my PC’s was about 1 hour but that followed hours of preparation on each. On a separate note, I recently got on the Nvidia web site and their utility told me I had a new driver available for my GeForce 8600M GS.  This laptop had come with Vista, now has Win 7 SP1.  I had a big surprise from this driver update; the Windows Experience Score on the graphics side went way up.  Kudo’s to Nvidia for doing a driver update that actually helps day to day usage.  And unlike ATI’s updates (which I need for my AGP based system), this update was fairly quick and very easy.  Also, Nvidia drivers have never, as I can recall, given me BSOD’s, many of which I’ve gotten from ATI (TDR errors).How to Enable Google Chrome’s Secret Gold IconHTG Explains: What’s the Difference Between the Windows 7 HomeGroups and XP-style Networking?Internet Explorer 9 Released: Here’s What You Need To Know

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• Great Customer Service Example

  - by MightyZot

  A few days ago I wrote about what I consider a poor customer service interaction with TiVo, a company that I have been faithful to for the past 12 years or so. In that post I talked about how they helped me, but I felt like I was doing something wrong at the end of the call – when in reality I was just following through with an offer that TiVo made possible through my cable company. Today I had a wonderful customer service interaction with American Express, another company that I have been loyal to for many years.(I am a Gold Card member.) I like my Amex card because I can use it for big purchases and it forces me to pay them off at the end of the month. Well, the reality is that I’m not always so good at doing that, so sometimes my payments are over a couple of months.  :) A few days ago I received an email from “American Express” fraud detection. The email stated that I should call a toll free number and have the last four digits of my card handy. I grew up during the BBS era with some creative and somewhat mischievous friends. I’ve learned to be extremely cautious with regard to my online life! So, I did what you would expect…I sent them a nice reply that said “Go screw yourself.” For the past couple of days someone has been trying to call me and I assumed it was the same prankster trying to get the last four digits of my card. The last caller left a message indicating that they were from American Express and they wanted to talk to me about my card. After looking up their customer service numbers on the www.americanexpress.com web site, I called and was put through to the fraud detection group. The rep explained that there were some charges on my wife’s card that did not fit our purchase profile. She went through each charge and, for the most part, they looked like charges my wife may have made. My wife had asked to use the card for some Christmas shopping during the same timeframe as the charges. The American Express rep very politely explained that these looked out of character to her. She continued through the charges. She listed a charge for $160 – at this point my adrenaline started kicking in. My wife said she was going to charge about $25 or $30 dollars, not $160. Next, the rep listed a charge for over $1200. Uh oh!! Now I know that my account has been compromised. I informed the rep that we definitely did not make those charges. She replied with, “that’s ok Mr Pope, we declined those charges as well as some others.” We went through the pending charges and there were a couple more that were questionable. The rep very patiently waited while I called my wife on my office phone to verify the charges. Sure enough, my wife had not ordered anything from Netflix or purchased anything with Yahoo Wallet! “No problem Mr Pope, we will remove those charges as well.” “We are going to cancel your wife’s card and send her a new one. She will receive it by 7pm tomorrow via Federal Express. Please watch your statements over the next couple of months. If you notice anything fishy, give us a call and we will take care of it for you.” (Wow, I’m thinking to myself!) “Is there anything else I can help you with Mr Pope?” “Nope, thank you very much for catching this so early and declining those charges!”, I said smiling. Apparently she could hear me smiling on the other end of the phone line because she replied with “keep smiling Mr Pope and have a good rest of your week.” Now THAT’s customer service!  Thank you American Express!!! I shall remain an ever faithful customer. Interesting…

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• Adding tables to a herd in bucardo

  - by Joseph the Dreamer

  Forgive my ignorance, I am a JS programmer given the task to do DB replication using bucardo. I understand the concept of how bucardo works, but setting it up is a bit confusing. The set-up is: Lubuntu Linux Two databases test_master and test_slave, using PostgreSQL Each DB has a table named test, containing 2 columns: id (PK) and test (int) I use pgAdmin3 I have already added them to bucardo's list of databases and added all tables. Table: public.test DB: test_slave PK: id (int4) Table: public.test DB: test_master PK: id (int4) As you see, due to the fact that the DBs are identical, even the schema names are identical. So when I do: bucardo_ctl add herd sample_herd public.test Ok, so it got added to the herd. But this command gets confused which database public.test comes from. So when I add a sync: $ bucardo_ctl add sync sample_sync source=sample_herd targetdb=test_slave type=fullcopy Failed to add sync: DBD::Pg::st execute failed: ERROR: Source and target databases cannot be the same: test_slave at line 118. at line 30. CONTEXT: PL/Perl function "validate_sync" at /usr/bin/bucardo_ctl line 3362. What does it mean that source and target cannot be the same? If it got confused as to which public.test to use as source, how do I differentiate?

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• Don&rsquo;t Kill the Password

  - by Anthony Trudeau

  A week ago Mr. Honan from Wired.com penned an article on security he titled “Kill the Password: Why a String of Characters Can’t Protect Us Anymore.” He asserts that the password is not effective and a new solution is needed. Unfortunately, Mr. Honan was a victim of hacking. As a result he has a victim’s vendetta. His conclusion is ill conceived even though there are smatterings of truth and good advice. The password is a security barrier much like a lock on your door. In of itself it’s not guaranteeing protection. You can have a good password akin to a steel reinforced door with the best lock money can buy, or you can have a poor password like “password” which is like a sliding lock like on a bathroom stall. But, just like in the real world a lock isn’t always enough. You can have a lock, security system, video cameras, guard dogs, and even armed security guards; but none of that guarantees your protection. Even top secret government agencies can be breached by someone who is just that good (as dramatized in movies like Mission Impossible). And that’s the crux of it. There are real hackers out there that are that good. Killer coding ninja monkeys do exist! We still have locks on our doors, because they still serve their role. Passwords are no different. Security doesn’t end with the password. Most people would agree that stuffing your mattress with your life savings isn’t a good idea even if you have the best locks and security system. Most people agree its safest to have the money in a bank. Essentially this is compartmentalization. Compartmentalization extends to the online world as well. You’re at risk if your online banking accounts are linked to the same account as your social networks. This is especially true if you’re lackadaisical about linking those social networks to outside sources including apps. The object here is to minimize the damage that can be done. An attacker should not be able to get into your bank account, because they breached your Twitter account. It’s time to prioritize once you’ve compartmentalized. This simply means deciding how much security you want for the different compartments which I’ll call security zones. Social networking applications like Facebook provide a lot of security features. However, security features are almost always a compromise with privacy and convenience. It’s similar to an engineering adage, but in this case it’s security, convenience, and privacy – pick two. For example, you might use a safe instead of bank to store your money, because the convenience of having your money closer or the privacy of not having the bank records is more important than the added security. The following are lists of security do’s and don’ts (these aren’t meant to be exhaustive and each could be an article in of themselves): Security Do’s: Use strong passwords based on a phrase Use encryption whenever you can (e.g. HTTPS in Facebook) Use a firewall (and learn to use it properly) Configure security on your router (including port blocking) Keep your operating system patched Make routine backups of important files Realize that if you’re not paying for it, you’re the product Security Don’ts Link accounts if at all possible Reuse passwords across your security zones Use real answers for security questions (e.g. mother’s maiden name) Trust anything you download Ignore message boxes shown by your system or browser Forget to test your backups Share your primary email indiscriminately Only you can decide your comfort level between convenience, privacy, and security. Attackers are going to find exploits in software. Software is complex and depends on other software. The exploits are the responsibility of the software company. But your security is always your responsibility. Complete security is an illusion. But, there is plenty you can do to minimize the risk online just like you do in the physical world. Be safe and enjoy what the Internet has to offer. I expect passwords to be necessary just as long as locks.

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• Public DNS redirect subdomain to Windows Server 2003 DNS

  - by user125248

  I'm a programmer by trade but often dabble in sysadmin tasks and responsibilities. I have recently been tasked with setting up a Windows Server 2003 networking environment for a small business with multiple branches. The business already has a domain name they use to host a website at www.example.com. Currently the DNS nameservers are at Zerigo and I would very much like it to remain that way (as they specialize in just providing DNS services and they do this very well). We also have a bunch of other subdomains we use to conviniently connect to the various branches that have static IPs assigned from ISPs, so we're able to connect easily to branch1.example.com. Is it possible to 'redirect' all intranet.example.com DNS requests to a Windows box? I've been doing a little reading and I see there are NS records that might be able to do this, and the Windows DNS server could then perform all of the lookups for that subdomain, say, server1.intranet.example.com or client5.intranet.example.com. This would seem better to me, than registering a new domain name for the organisation, as keeping a single domain name makes more organizational sense.

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• A temporary disagreement

  - by Tony Davis

  Last month, Phil Factor caused a furore amongst some MVPs with an article that attempted to offer simple advice to developers regarding the use of table variables, versus local and global temporary tables, in their code. Phil makes clear that the table variables do come with some fairly major limitations.no distribution statistics, no parallel query plans for queries that modify table variables.but goes on to suggest that for reasonably small-scale strategic uses, and with a bit of due care and testing, table variables are a "good thing". Not everyone shares his opinion; in fact, I imagine he was rather aghast to learn that there were those felt his article was akin to pulling the pin out of a grenade and tossing it into the database; table variables should be avoided in almost all cases, according to their advice, in favour of temp tables. In other words, a fairly major feature of SQL Server should be more-or-less 'off limits' to developers. The problem with temp tables is that, because they are scoped either in the procedure or the connection, it is easy to allow them to hang around for too long, eating up precious memory and bulking up the shared tempdb database. Unless they are explicitly dropped, global temporary tables, and local temporary tables created within a connection rather than within a stored procedure, will persist until the connection is closed or, with connection pooling, until the connection is reused. It's also quite common with ASP.NET applications to have connection leaks, as Bill Vaughn explains in his chapter in the "SQL Server Deep Dives" book, meaning that the web page exits without closing the connection object, maybe due to an error condition. This will then hang around in the heap for what might be hours before picked up by the garbage collector. Table variables are much safer in this regard, since they are batch-scoped and so are cleaned up automatically once the batch is complete, which also means that they are intuitive to use for the developer because they conform to scoping rules that are closer to those in procedural code. On the surface then, an ideal way to deal with issues related to tempdb memory hogging. So why did Phil qualify his recommendation to use Table Variables? This is another of those cases where, like scalar UDFs and table-valued multi-statement UDFs, developers can sometimes get into trouble with a relatively benign-looking feature, due to way it's been implemented in SQL Server. Once again the biggest problem is how they are handled internally, by the SQL Server query optimizer, which can make very poor choices for JOIN orders and so on, in the absence of statistics, especially when joining to tables with highly-skewed data. The resulting execution plans can be horrible, as will be the resulting performance. If the JOIN is to a large table, that will hurt. Ideally, Microsoft would simply fix this issue so that developers can't get burned in this way; they've been around since SQL Server 2000, so Microsoft has had a bit of time to get it right. As I commented in regard to UDFs, when developers discover issues like with such standard features, the database becomes an alien planet to them, where death lurks around each corner, and they continue to avoid these "killer" features years after the problems have been eventually resolved. In the meantime, what is the right approach? Is it to say "hammers can kill, don't ever use hammers", or is it to try to explain, as Phil's article and follow-up blog post have tried to do, what the feature was intended for, why care must be applied in its use, and so enable developers to make properly-informed decisions, without requiring them to delve deep into the inner workings of SQL Server? Cheers, Tony.

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• PHP Web Services - Nice try

  Thanks to the membership in the O'Reilly User Group Programme the Mauritius Software Craftsmanship Community (short: MSCC) recently received a welcome package with several book titles. Among them is the latest publication of Lorna Jane Mitchell - 'PHP Web Services: APIs for the Modern Web'. Following is the book review I put on Amazon: Nice try! Initially, I was astonished that a small book like 'PHP Web Services' would be able to cover all the interesting topics about APIs and Web Services, independently whether they are written in PHP or not. And unfortunately, the title isn't able to stand up to the readers (or at least my) expectations. Maybe as a light defense, there is no usual paragraph about the intended audience of that book, but still I have to admit that the first half (chapters 1 to 8) are well written and Lorna has her points on the various technologies. Also, the code samples in PHP are clean and easy to understand. With chapter 'Debugging Web Services' the book started to change my mind about the clarity of advice and the instructions on designing and developing good APIs. Eventually, this might be related to the fact that I'm used to other tools since years, like Telerik Fiddler as HTTP proxy in order to trace and inspect any kind of request/response handling. Including localhost monitoring, SSL certification acceptance, and the ability to debug mobile devices, especially iOS-based ones. Compared to Charles, Fiddler is available for free. What really got me off the hook is the following statement in chapter 10 about Service Type Decisions: "For users who have larger systems using technology stacks such as Java, C++, or .NET, it may be easier for them to integrate with a SOAP service." WHAT? A couple of pages earlier the author recommends to stay away from 'old-fashioned' API styles like SOAP (if possible). And on top of that I wonder why there are tons of documentation towards development of RESTful Web Services based on WebAPI. The ASP.NET stack clearly moves away from SOAP to JSON and REST since years! Honestly, as a software developer on the .NET stack this leaves a mixed feeling after all. As for the remaining chapters I simply consider them as 'blah blah' without any real value and lots of theoretical advice. Related to the chapter 13 about 'Documentation', I just had the 'pleasure' to write a C#-based client against a Java-based SOAP Web Service. Personally, I take the WSDL as the master reference in the first place and Visual Studio generates all the stub types involved in the communication. During the implementation and testing I came across a 'java.lang.NullPointerException' in various methods and for various method parameters. The WSDL and the generated types were declared as Nullable, so nothing to worry about, or? Well, I logged in a support ticket, and guess what was the response to that scenario? "The service definition in the WSDL is wrong, please refer to the documentation in order to use the methods and parameters correctly" - No comment! Lorna's title is a quick read and in some areas she has good advice on designing and implementing Web Services and APIs. But roughly 100 pages aren't enough to cover a vast topic like that. After all, nice try and I'm looking forward to an improved second edition. Honestly, I never thought that I would come across a poor review. In general, it's a good book but it clearly has a lack of depth, the PHP code samples are incomplete (closing tags missing), and there are too many assumptions and theoretical statements.

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• Changing MX records in named zone file

  - by Paul England

  I forgot how all this works. I have a GoDaddy account, using my own DNS and whatnot. I'm having trouble getting my email to work. They said I need to update my MX records. basically, I have the following. 184.168.30.42 is the domain's IP address, obviously. gamengai.com. 14400 IN NS n1 gamengai.com. 14400 IN NS n2 ns1 14400 IN A 184.168.30.42 ns2 14400 IN A 184.168.30.42 gamengai.com. 14400 IN A 184.168.30.42 localhost 14400 IN A 127.0.0.1 ftp 14400 IN A 184.168.30.42 www 14400 IN A 184.168.30.42 mail 14400 IN A 184.168.30.42 subdomain 14400 IN A 184.168.30.42 gamengai.com 14400 IN MX 10 mail Mail doesn't work though... they say to make the following change: 0 smtp.secureserver.net 10 mailstore1.secureserver.net So should the last line point to mailstore1.secureserver.net instead of mail in the last field? What about the other line? I had this working at one time, but it's totally gotten away from me. It's a virtual dedicated server and their support for this stuff is pretty bad... almost as bad as my admin skills since I went the programmer route.

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• Triangle Line-Segment Intersection - detecting near misses

  - by Will

  A ray is a very poor approximation of a player! I think approximating a player with a sphere traveling a straight line each game tick will solve my problems of the player intersecting edges of scenery because their line segment missed it yet their own model is not infinitely thin... I have a 3D triangle and a line segment. I have the normal triangle-line-segment intersection code which I admit I have only a woolly grasp of. To model movement and compute collisions of the player I have to determine if a line passes within sphere-radius of a triangle. But I can find no convenient line near-miss intersection code! Here's the classic triangle intersection ### commented ### code with my starting assumptions: function triangle_ray_intersection(a,b,c,ray_origin,ray_dir,ray_radius) { // http://softsurfer.com/Archive/algorithm_0105/algorithm_0105.htm#intersect_RayTriangle%28%29 // get triangle edge vectors and plane normal var u = vec3_sub(b,a); var v = vec3_sub(c,a); var n = vec3_cross(u,v); if(n[0]==0 && n[1]==0 && n[2]==0) return null; // triangle is degenerate var w0 = vec3_sub(ray_origin,a); var j = vec3_dot(n,ray_dir); if(Math.abs(j) < 0.00000001) { //### if parallel, might still pass within ray_radius of it return null; // parallel, disjoint or on plane } var i = -vec3_dot(n,w0); // get intersect point of ray with triangle plane var k = i / j; if(k < 0.0) return null; // ray goes away from triangle //### as its a line segment, k > 1+ray_radius means no intersect var hit = vec3_add(ray_origin,vec3_scale(ray_dir,k)); // intersect point of ray and plane // is I inside T? //### here I'm a bit lost; this is presumably computing barycentric coordinates? var uu = vec3_dot(u,u); var uv = vec3_dot(u,v); var vv = vec3_dot(v,v); var w = vec3_sub(hit,a); var wu = vec3_dot(w,u); var wv = vec3_dot(w,v); var D = uv * uv - uu * vv; var s = (uv * wv - vv * wu) / D; //### therefore, compute if its within ray_radius scaled to the 0..1 of barycentric coordinates? if(s<0.0 || s>1.0) return null; // I is outside T var t = (uv * wu - uu * wv) / D; if(t<0.0 || (s+t)>1.0) return null; // I is outside T //### finally, if it passses a barycentric test it might still be too far //### to a point; must check that its distance from a corner is within ray_radius too if more than one barycentric coord is >1 //### so we have rounded corners... return [hit,n]; // I is in T } Given the distance between the point of plane intersection and each corner, I ought to be able to determine distance at world scale of how far beyond the edge - beyond 1.0 in barycentric coordinates for each axis - that point is... At this point my head explodes! Is this the right track? What's the actual code? UPDATE: you can earn 100 pts on SO if you answer this question there...! How can you determine if a line segment passes within some distance of a triangle?

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• Passenger not booting Rails App

  - by firecall

  I'm at the end of ability, so time to ask for help. My hosting company are moving me to a new server. I've got my own VPS. It's a fresh CentOS 5 install with Plesk 9.5.2 Essentially Passenger just doesnt seem to be booting the Rails app. It's like it doesnt see it's a Rails app to be booted. I've got Rails 3.0 install with Ruby 1.9.2 built from source. I can run Bundle Install and that works. I've currently got Passenger 3 RC1 installed as per here, but have tried v2 as well. My conf/vhost.conf file looks like this: DocumentRoot /var/www/vhosts/foosite.com.au/httpdocs/public/ RackEnv development #Options Indexes I've got a /etc/httpd/conf.d/passenger.conf file which looks like this: LoadModule passenger_module /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.0.pre4/ext/apache2/mod_passenger.so PassengerRoot /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.0.pre4 PassengerRuby /usr/local/bin/ruby PassengerLogLevel 2 and all I get is a 403 forbidden or the directory listing if I enable Indexes. I dont know what else to do! Yikes. There's nothing in the Apache error log that I can see. The new server admin isnt much help as I think he's a bit junior and says he doesnt know about Rails... sigh :/ I'm a programmer and server admin isnt my bag :(

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• Windows Server 2003 with Apache and IIS causing random faulting and performance issues with Apache?

  - by contrebis

  I'm trying to fix a problem on a Windows Server 2003 SE install which is running IIS6 and Apache webserver (with PHP and MySQL). IIS sites are bound to one IP, Apache to the other. Everything seemed fine till the other IP address was installed to allow a webservice to run under IIS. Symptoms: Apache now responds very slowly, even requests for static files (often 30 seconds or more) Sporadic errors are appearing in the event logs like: Faulting application httpd.exe, version 2.2.14.0, faulting module php5ts.dll, version 5.2.13.13, fault address 0x000ac14f. I've double-checked the config files, taken account of this question/answer http://serverfault.com/questions/51230/running-iis-and-apache-on-the-same-windows-server, upped the Apache log level to debug, run TCPView to check for conflicting bindings, upgraded to latest Apache/PHP versions but still no success or indication of a cause. Any suggestions on where to look, or debugging tips would be gratefully received. I'm a web programmer so not so familiar with Windows Server admin or details of the networking stack. Running PHP under IIS is not an option and hosting on another server is non-ideal.

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• CSV Anyone?

  - by Tim Dexter

  CSV, a dead format? With today's abilities to generate Excel output (Im working on some posts for the shiny new Excel templates) and the sophistication of the eText outputs, do you really need CSV? I guess so seeing as it was added after the base product was released as an enhancement. But I'd be interested in hearing use cases? I used to think the same of text output. But now Im working in the public sector where older technologies abound I can see a use for text output. Its also used as a machine readable format, etc. BIP still does not support a text format from its RTF templates but its very doable using XSL templates. Back to CSV, I noticed an enhancement in the big list of new stuff in the 10.1.3.4.1 rollup. You can now generate CSV from structured data ie a data template or a SQL XML query. This piqued my interest so I ran off a data template to CSV. Its interesting, in a geeky kinda way, I guess Im that way inclined.Here's my data structure:<EMPLOYEES> <LIST_G_DEPT> <G_DEPT>  <DEPARTMENT_ID>10</DEPARTMENT_ID>  <DEPARTMENT_NAME>Administration</DEPARTMENT_NAME>  <LIST_G_EMP>   <G_EMP>     <EMPLOYEE_ID>200</EMPLOYEE_ID>     <EMP_NAME>Jennifer Whalen</EMP_NAME>     <EMAIL>JWHALEN</EMAIL>     <PHONE_NUMBER>515.123.4444</PHONE_NUMBER>     <HIRE_DATE>1987-09-17T00:00:00.000-06:00</HIRE_DATE>     <SALARY>4400</SALARY>    </G_EMP>   </LIST_G_EMP>  <TOTAL_EMPS>1</TOTAL_EMPS>  <TOTAL_SALARY>4400</TOTAL_SALARY>  <AVG_SALARY>4400</AVG_SALARY>  <MAX_SALARY>4400</MAX_SALARY>  <MIN_SALARY>4400</MIN_SALARY> </G_DEPT>Poor ol Jennifer, she needs some help in the Admin department :0)Pushing this to CSV and BP completely flattens the data out so you get a completely denormalized data output in the CSV.TOTAL_SALARY,DEPARTMENT_ID,DEPARTMENT_NAME,MIN_SALARY,AVG_SALARY,MAX_SALARY,EMPLOYEE_ID,SALARY,PHONE_NUMBER,HIRE_DATE,EMP_NAME,EMAIL,TOTAL_EMPS4400,10,Administration,4400,4400,4400,200,4400,515.123.4444,1987-09-17T00:00:00.000-06:00,"Jennifer Whalen",JWHALEN,119000,20,Marketing,6000,9500,13000,201,13000,515.123.5555,1996-02-17T00:00:00.000-07:00,"Michael Hartstein",MHARTSTE,219000,20,Marketing,6000,9500,13000,202,6000,603.123.6666,1997-08-17T00:00:00.000-06:00,"Pat Fay",PFAY,2Useful? Its a little confusing to start with but it is completely de-normalized so there is lots of repetition. But if it floats your boat, you got it!

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• Database – Beginning with Cloud Database As A Service

  - by Pinal Dave

  I love my weekend projects. Everybody does different activities in their weekend – like traveling, reading or just nothing. Every weekend I try to do something creative and different in the database world. The goal is I learn something new and if I enjoy my learning experience I share with the world. This weekend, I decided to explore Cloud Database As A Service – Morpheus. In my career I have managed many databases in the cloud and I have good experience in managing them. I should highlight that today’s applications use multiple databases from SQL for transactions and analytics, NoSQL for documents, In-Memory for caching to Indexing for search.  Provisioning and deploying these databases often require extensive expertise and time.  Often these databases are also not deployed on the same infrastructure and can create unnecessary latency between the application layer and the databases.  Not to mention the different quality of service based on the infrastructure and the service provider where they are deployed. Moreover, there are additional problems that I have experienced with traditional database setup when hosted in the cloud: Database provisioning & orchestration Slow speed due to hardware issues Poor Monitoring Tools High network latency Now if you have a great software and expert network engineer, you can continuously work on above problems and overcome them. However, not every organization have the luxury to have top notch experts in the field. Now above issues are related to infrastructure, but there are a few more problems which are related to software/application as well. Here are the top three things which can be problems if you do not have application expert: Replication and Clustering Simple provisioning of the hard drive space Automatic Sharding Well, Morpheus looks like a product build by experts who have faced similar situation in the past. The product pretty much addresses all the pain points of developers and database administrators. What is different about Morpheus is that it offers a variety of databases from MySQL, MongoDB, ElasticSearch to Reddis as a service.  Thus users can pick and chose any combination of these databases.  All of them can be provisioned in a matter of minutes with a simple and intuitive point and click user interface.  The Morpheus cloud is built on Solid State Drives (SSD) and is designed for high-speed database transactions.  In addition it offers a direct link to Amazon Web Services to minimize latency between the application layer and the databases. Here are the few steps on how one can get started with Morpheus. Follow along with me.  First go to http://www.gomorpheus.com and register for a new and free account. Step 1: Signup It is very simple to signup for Morpheus. Step 2: Select your database   I use MySQL for my daily routine, so I have selected MySQL. Upon clicking on the big red button to add Instance, it prompted a dialogue of creating a new instance.   Step 3: Create User Now we just have to create a user in our portal which we will use to connect to a database hosted at Morpheus. Click on your database instance and it will bring you to User Screen. Over here you will notice once again a big red button to create a new user. I created a user with my first name.   Step 4: Configure your MySQL client I used MySQL workbench and connected to MySQL instance, which I had created with an IP address and user.   That’s it! You are connecting to MySQL instance. Now you can create your objects just like you would create on your local box. You will have all the features of the Morpheus when you are working with your database. Dashboard While working with Morpheus, I was most impressed with its dashboard. In future blog posts, I will write more about this feature.  Also with Morpheus you use the same process for provisioning and connecting with other databases: MongoDB, ElasticSearch and Reddis. Reference: Pinal Dave (http://blog.sqlauthority.com)Filed under: MySQL, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL

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• Who Makes a Good Product Owner

  - by Robert May

  In general, the best product owners are those that care passionately about the customer of the product.  Note that I didn’t say about the product itself.  Actually, people that only care about the product, generally do not make good product owners.  Products only matter in relationship to their customers.  If a product doesn’t provide value to the customer, then the product has no value, no matter what a person might think of the product, and no matter what cool technologies exist inside of the product. A good product owner is also a good negotiator.  They recognize that many different priorities exist inside of a corporation, but that there can be only one list that developers work from.  A good product owner recognizes that its their job to help others around them prioritize (perhaps with a Product Council), but also understand that they alone have the final say about priorities and are willing to make the tough decisions required.  Deciding the priority between two perfectly valid stories is very difficult, especially when the stories are from two different departments! A good product owner is deeply interested in helping the team be successful.  They don’t seek to control the team, but instead seek to understand what the team can do and then work with the team to get the best product possible for the Customer.  A good product owner is never denigrating to team members, ever.  They recognize that such behavior would damage the trust that needs to be present between team members and product owners and will avoid it at all costs. In general, technical people (i.e. former or current developers) make poor product owners.  In their minds, they can’t separate implementation details from user functionality, so their stories end up sounding like implementation details.  For example, “The user enters their username on the password screen” is something that a technical product owner would write.  The proper wording for that story is “A user supplies the system with their credentials.”  Because technical people think different from the rest of the population, they are generally not a good fit. A good product owner is also a good writer.  Writing good stories demands good writing.  The art of persuasion, descriptiveness and just general good grammar are all required.  A good Product Owner must also be well spoken, since most of what will be conveyed will be conveyed with the spoken word, not just written word. A good product owner is a “People Person.”  They like talking to people and are very patient.  They don’t mind having questions repeated or fielding many questions, because they want to make sure that the ideas they’re conveying are properly understood so the customer gets the best product possible.  They are happy to answer any questions a team member may have and invite feedback and criticism of designs and stories, since they want a good product.  They really have little ego that gets in the way of building a great product. All of these qualities can be hard to find, but if you look close enough, you’ll find the right person in your organization.  Product owners can be found anywhere, not just in upper management.  Some of the best product owners are those that are very close to the customer.  In fact, check your customer support staff.  I’d bet that several great product owners are lurking there. Final note about what makes a good product owner.  You’re probably NOT going to find a good product owner in a manager, especially if they consider themselves a “Manager.”  Product owners don’t manage anything but the backlog, so be especially careful if the person you’re selecting for Product Owner is a manager. Up Next, “Messing with the Team.” Technorati Tags: Scrum,Product Owner

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• Knowledge Management Feedback

  - by Robert Schweighardt

  Did you know that you can provide feedback on Knowledge Management (KM) articles? It's nice to read a technical article that is well-written, the grammar and spelling are correct, the information is up to date, concise, to the point, easy to understand and it flows from one paragraph to another.  And though we always strive for a well-written article, it doesn't always come out that way. Knowledge Management articles are written by Oracle Support Engineers and we welcome your feedback.  Providing feedback helps to improve Oracle's Knowledge Base.  If you're reading a KM article and you have a comment, please let us know about it.  Maybe it's just to fix a spelling or grammatical error.  Maybe there's a broken link that needs to be fixed.  Maybe it's a suggestion to provide additional information.  Maybe the article contains incorrect information.  Maybe some information in the article is outdated.  Maybe something is not clear in the article.  Whatever it is, we want to hear about it.  We value your input! When you provide feedback it goes directly to the owner of the article.  The owner carefully reviews the comment and decides whether or not to implement it.  Most comments are implemented and we strive to implement them within a week!  For those comments that are not implemented, there is normally a good reason.  It may not be feasible to implement the suggestion or the suggestion may not be correct.  We don't take the decision lightly! So how do you provide feedback? Providing feedback on a KM article depends on whether you're a customer or an Oracle Employee. Customer 1. In the upper right hand corner of the article, click on the little +/- Rate this document icon: Note: The grayed out Comments (0) link will only show a number when there are open comments that are still being evaluated. 2. In the Article Rating window, complete as many of the following optional fields as you like and then click the Send Rating button: Rate the article as Excellent, Good or Poor Specify whether the article helped you or not Specify the ease of finding the article Provide whatever comments you have Employee The interface for Oracle Employees is a little bit different, there are more options. 1. The +/- Rate this document icon is also available to employees and is identical to what the customers have.  Please see Customer section above. 2. The Show document comments link shows all comments that have ever been submitted for the article 3. Employees have an additional way to submit a comment.  Click on the little + Add Comment icon: 4. Fill out the Add Comment fields and click the Add Comment button: We look forward to your feedback!

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• SQL SERVER – Learn SQL Server 2014 Online in a Day – My Latest Pluralsight Course

  - by Pinal Dave

  Click here watch SQL Server 2014 Administration New Features.  SQL Server 2014 was released earlier this year and it has been extremely popular in Microsoft world. Here is the announcement for everyone, who have been asking me to build a tutorial around SQL Server 2014. I have authored latest Pluralsight courses on the subject of SQL Server 2014. This course is 4 hours and 17 minutes long, but the best part is that this course contains all the latest features of SQL Server 2014. I have build this course with the assumption that DBA is familiar with earlier versions of SQL Server and wants to explore and learn new features of SQL Server 2014. The Challenge I Faced The biggest challenge I faced was how to come up with the outline for the course. The reason is that there are so many different features introduced in SQL Server 2014 that is will be difficult to cover each of the features in a single course. I wanted to cover the topics which are the most relevant and useful to developers, but in addition I also wanted to cover the topics which may be useful to develop if they know that they exists in the product. I finally decided to depend on blog readers and few of the SQL Experts. I reached out to selected 20 people via email and gave them a list of the topics which I should be covering in this course. They all work in different organizations and have a good understanding about the need of the DBA and Developers. Based on their feedback, I was able to come up with a very good outline which is currently very popular with Pluralsight library. Lots of people have asked me how was I able to come up with a course content outline so accurately. The credit for the same goes to the developers and DBA, who have voted in the topics and have helped me to build a very solid outline for the course. Outline of the Course Here is a quick outline for the course: Introduction Backup Enhancements Security Enhancements Columnstore Enhancements Online Data Operations Enhancements Enhancements with Microsoft Azure SSD Buffer Pool Extensions Resource Governor IO Miscellaneous Features Online Index Rebuilding Live Plans for Long Running Queries Transaction Durability Cardinality Estimation In Memory OLTP Optimization Well, I had a great fun working on the topics which I have mentioned in the outline. I am very confident that once you start with the course, you will indeed understand how each of the topics builds and presented. I have made sure that each of the topic has a vivid and clear story to begin with. I first explain the story and right after that I explain the concept. Who Should Attend This Course Everyone who has basic knowledge of SQL Server and wants to update themselves with SQL Server 2014. They should attend this course. One thing I have made sure that this course is easy to understand and I have decided complex subject into multiple parts. This way the learning is progressive and anyone with a poor knowledge of the subject can have enough time to understand the presented concept. Screenshot of the Course Here are few of the screenshot of the courses. How to Watch Video Course This course is available at Pluralsight, and you will need a valid login to Pluralsight. If you do not have Pluralsight login, you can quickly sign up for the FREE Trial. Click here watch SQL Server 2014 Administration New Features.  Reference: Pinal Dave (http://blog.SQLAuthority.com)Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQL Training, SQLAuthority News, T SQL, Video

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• IBM Thinkpad 240 - Best way to boot from floppy to USB - Best Linux for 300 MHz 128 MB RAM 800x600 s

  - by zillion

  Mostly I still have that old 'ultraportable' laptop that is mostly like a pre-netbook era laptop and a friend and programmer needs a computer because the one he was using just broke and he has to wait until the new one arrive in 4-6 weeks ... This laptop has no LAN connection and CD-ROM so be prepared for a real challenge! All hardware is well supported on Windows XP (included drivers on the Windows XP CD) and on Linux out-of-the-box (but the screen need a special configuration.) Mostly any Linux that will work well with Skype (USB or regular headset), any MSN client and a text writer for code will do. What I have tested so far: Slitaz 2 don't boot because the floppy of GRUB4DOS don't see the USB drive (fully working and tested on my regular laptop), Damn Small Linux was working but was needing a special screen configuration that I don't remember (in the boot options of the floppy) and now I'm thinking about Puppy Linux that is seen to work totally out of the box with it but I will need an old Puppy version (1 or 2 I think) and the Wakepup floppy ... If you got some ideas to help or to try I'm open!

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