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• My Oracle Support 6.3 - ?????

  - by Steve He(???)

  My Oracle Support 6.3 ?2012?10?13???,???????30?????60+bug ??. ?????? ????????????,?“how to”????????,???????????????? ?My Oracle Support????????????:??????????,?????????(???????????)? ????:???My Oracle Support??????????????????????,????????????????,????????????????????,???????,????????,???????????????,???:https://blogs.oracle.com/supportportal/entry/mos_6_2_release ???????ORA-600,ORA-700:??“ORA-600 [ARG1]”???“ORA-00600: Internal Error Code, Arguments: [Arg1]”,??????????

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• This is not a democracy (Ubuntu)

  <b>Comment 167 for bug 532633:</b> "This is not a democracy. Good feedback, good data, are welcome. But we are not voting on design decisions."

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• ????????

  - by Steve He(???)

  ???,???? - ???? ?Oracle????????,???????????????????,???????????????????,???????My Oracle Support???????,?????????????,???,???????????“??”???,???????????????????????????????...?????Oracle??,?????RSS????,????????????????????????,??????????????????,??????????????? ??,????????????????,??????,????????????????????,???????????“??”????????????????,?????????????,??????????Oracle????????????? ???????????,??????????,Oracle???????????“????????”????????????????????,?Oracle????????????,??????????,????????,?????????????????,??????????????????????????????,??bug,??????????????,???????????????????????ID 793436.1,?????,?????????????,???????Oracle????????????

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• .NET Code Evolution

  - by Alois Kraus

  Originally posted on: http://geekswithblogs.net/akraus1/archive/2013/07/24/153504.aspxAt my day job I do look at a lot of code written by other people. Most of the code is quite good and some is even a masterpiece. And there is also code which makes you think WTF… oh it was written by me. Hm not so bad after all. There are many excuses reasons for bad code. Most often it is time pressure followed by not enough ambition (who cares) or insufficient training. Normally I do care about code quality quite a lot which makes me a (perceived) slow worker who does write many tests and refines the code quite a lot because of the design deficiencies. Most of the deficiencies I do find by putting my design under stress while checking for invariants. It does also help a lot to step into the code with a debugger (sometimes also Windbg). I do this much more often when my tests are red. That way I do get a much better understanding what my code really does and not what I think it should be doing. This time I do want to show you how code can evolve over the years with different .NET Framework versions. Once there was  time where .NET 1.1 was new and many C++ programmers did switch over to get rid of not initialized pointers and memory leaks. There were also nice new data structures available such as the Hashtable which is fast lookup table with O(1) time complexity. All was good and much code was written since then. At 2005 a new version of the .NET Framework did arrive which did bring many new things like generics and new data structures. The “old” fashioned way of Hashtable were coming to an end and everyone used the new Dictionary<xx,xx> type instead which was type safe and faster because the object to type conversion (aka boxing) was no longer necessary. I think 95% of all Hashtables and dictionaries use string as key. Often it is convenient to ignore casing to make it easy to look up values which the user did enter. An often followed route is to convert the string to upper case before putting it into the Hashtable. Hashtable Table = new Hashtable(); void Add(string key, string value) { Table.Add(key.ToUpper(), value); } This is valid and working code but it has problems. First we can pass to the Hashtable a custom IEqualityComparer to do the string matching case insensitive. Second we can switch over to the now also old Dictionary type to become a little faster and we can keep the the original keys (not upper cased) in the dictionary. Dictionary<string, string> DictTable = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase); void AddDict(string key, string value) { DictTable.Add(key, value); } Many people do not user the other ctors of Dictionary because they do shy away from the overhead of writing their own comparer. They do not know that .NET has for strings already predefined comparers at hand which you can directly use. Today in the many core area we do use threads all over the place. Sometimes things break in subtle ways but most of the time it is sufficient to place a lock around the offender. Threading has become so mainstream that it may sound weird that in the year 2000 some guy got a huge incentive for the idea to reduce the time to process calibration data from 12 hours to 6 hours by using two threads on a dual core machine. Threading does make it easy to become faster at the expense of correctness. Correct and scalable multithreading can be arbitrarily hard to achieve depending on the problem you are trying to solve. Lets suppose we want to process millions of items with two threads and count the processed items processed by all threads. A typical beginners code might look like this: int Counter; void IJustLearnedToUseThreads() { var t1 = new Thread(ThreadWorkMethod); t1.Start(); var t2 = new Thread(ThreadWorkMethod); t2.Start(); t1.Join(); t2.Join(); if (Counter != 2 * Increments) throw new Exception("Hmm " + Counter + " != " + 2 * Increments); } const int Increments = 10 * 1000 * 1000; void ThreadWorkMethod() { for (int i = 0; i < Increments; i++) { Counter++; } } It does throw an exception with the message e.g. “Hmm 10.222.287 != 20.000.000” and does never finish. The code does fail because the assumption that Counter++ is an atomic operation is wrong. The ++ operator is just a shortcut for Counter = Counter + 1 This does involve reading the counter from a memory location into the CPU, incrementing value on the CPU and writing the new value back to the memory location. When we do look at the generated assembly code we will see only inc dword ptr [ecx+10h] which is only one instruction. Yes it is one instruction but it is not atomic. All modern CPUs have several layers of caches (L1,L2,L3) which try to hide the fact how slow actual main memory accesses are. Since cache is just another word for redundant copy it can happen that one CPU does read a value from main memory into the cache, modifies it and write it back to the main memory. The problem is that at least the L1 cache is not shared between CPUs so it can happen that one CPU does make changes to values which did change in meantime in the main memory. From the exception you can see we did increment the value 20 million times but half of the changes were lost because we did overwrite the already changed value from the other thread. This is a very common case and people do learn to protect their  data with proper locking.   void Intermediate() { var time = Stopwatch.StartNew(); Action acc = ThreadWorkMethod_Intermediate; var ar1 = acc.BeginInvoke(null, null); var ar2 = acc.BeginInvoke(null, null); ar1.AsyncWaitHandle.WaitOne(); ar2.AsyncWaitHandle.WaitOne(); if (Counter != 2 * Increments) throw new Exception(String.Format("Hmm {0:N0} != {1:N0}", Counter, 2 * Increments)); Console.WriteLine("Intermediate did take: {0:F1}s", time.Elapsed.TotalSeconds); } void ThreadWorkMethod_Intermediate() { for (int i = 0; i < Increments; i++) { lock (this) { Counter++; } } } This is better and does use the .NET Threadpool to get rid of manual thread management. It does give the expected result but it can result in deadlocks because you do lock on this. This is in general a bad idea since it can lead to deadlocks when other threads use your class instance as lock object. It is therefore recommended to create a private object as lock object to ensure that nobody else can lock your lock object. When you read more about threading you will read about lock free algorithms. They are nice and can improve performance quite a lot but you need to pay close attention to the CLR memory model. It does make quite weak guarantees in general but it can still work because your CPU architecture does give you more invariants than the CLR memory model. For a simple counter there is an easy lock free alternative present with the Interlocked class in .NET. As a general rule you should not try to write lock free algos since most likely you will fail to get it right on all CPU architectures. void Experienced() { var time = Stopwatch.StartNew(); Task t1 = Task.Factory.StartNew(ThreadWorkMethod_Experienced); Task t2 = Task.Factory.StartNew(ThreadWorkMethod_Experienced); t1.Wait(); t2.Wait(); if (Counter != 2 * Increments) throw new Exception(String.Format("Hmm {0:N0} != {1:N0}", Counter, 2 * Increments)); Console.WriteLine("Experienced did take: {0:F1}s", time.Elapsed.TotalSeconds); } void ThreadWorkMethod_Experienced() { for (int i = 0; i < Increments; i++) { Interlocked.Increment(ref Counter); } } Since time does move forward we do not use threads explicitly anymore but the much nicer Task abstraction which was introduced with .NET 4 at 2010. It is educational to look at the generated assembly code. The Interlocked.Increment method must be called which does wondrous things right? Lets see: lock inc dword ptr [eax] The first thing to note that there is no method call at all. Why? Because the JIT compiler does know very well about CPU intrinsic functions. Atomic operations which do lock the memory bus to prevent other processors to read stale values are such things. Second: This is the same increment call prefixed with a lock instruction. The only reason for the existence of the Interlocked class is that the JIT compiler can compile it to the matching CPU intrinsic functions which can not only increment by one but can also do an add, exchange and a combined compare and exchange operation. But be warned that the correct usage of its methods can be tricky. If you try to be clever and look a the generated IL code and try to reason about its efficiency you will fail. Only the generated machine code counts. Is this the best code we can write? Perhaps. It is nice and clean. But can we make it any faster? Lets see how good we are doing currently. Level Time in s IJustLearnedToUseThreads Flawed Code Intermediate 1,5 (lock) Experienced 0,3 (Interlocked.Increment) Master 0,1 (1,0 for int[2]) That lock free thing is really a nice thing. But if you read more about CPU cache, cache coherency, false sharing you can do even better. int[] Counters = new int[12]; // Cache line size is 64 bytes on my machine with an 8 way associative cache try for yourself e.g. 64 on more modern CPUs void Master() { var time = Stopwatch.StartNew(); Task t1 = Task.Factory.StartNew(ThreadWorkMethod_Master, 0); Task t2 = Task.Factory.StartNew(ThreadWorkMethod_Master, Counters.Length - 1); t1.Wait(); t2.Wait(); Counter = Counters[0] + Counters[Counters.Length - 1]; if (Counter != 2 * Increments) throw new Exception(String.Format("Hmm {0:N0} != {1:N0}", Counter, 2 * Increments)); Console.WriteLine("Master did take: {0:F1}s", time.Elapsed.TotalSeconds); } void ThreadWorkMethod_Master(object number) { int index = (int) number; for (int i = 0; i < Increments; i++) { Counters[index]++; } } The key insight here is to use for each core its own value. But if you simply use simply an integer array of two items, one for each core and add the items at the end you will be much slower than the lock free version (factor 3). Each CPU core has its own cache line size which is something in the range of 16-256 bytes. When you do access a value from one location the CPU does not only fetch one value from main memory but a complete cache line (e.g. 16 bytes). This means that you do not pay for the next 15 bytes when you access them. This can lead to dramatic performance improvements and non obvious code which is faster although it does have many more memory reads than another algorithm. So what have we done here? We have started with correct code but it was lacking knowledge how to use the .NET Base Class Libraries optimally. Then we did try to get fancy and used threads for the first time and failed. Our next try was better but it still had non obvious issues (lock object exposed to the outside). Knowledge has increased further and we have found a lock free version of our counter which is a nice and clean way which is a perfectly valid solution. The last example is only here to show you how you can get most out of threading by paying close attention to your used data structures and CPU cache coherency. Although we are working in a virtual execution environment in a high level language with automatic memory management it does pay off to know the details down to the assembly level. Only if you continue to learn and to dig deeper you can come up with solutions no one else was even considering. I have studied particle physics which does help at the digging deeper part. Have you ever tried to solve Quantum Chromodynamics equations? Compared to that the rest must be easy ;-). Although I am no longer working in the Science field I take pride in discovering non obvious things. This can be a very hard to find bug or a new way to restructure data to make something 10 times faster. Now I need to get some sleep ….

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• Hard drive write speed - finding a lighter antivirus?

  - by Shingetsu

  I recently have been getting a lot of system lag here (for example, the mouse and the display in general take about 15 seconds to react in the worst cases). After a lot of monitoring the resources, I found that the problem mainly happens when too much Disk I/O is being done. Three culprits have been identified: My browser had the highest write I/O with 35,000,000 I/O Write Bytes. Steam had the highest read I/O (when IDLE!!!) with 106,000,000 I/O Read Bytes. My antivirus (in both cases I will soon mention) was the runner up in both cases with: 30,000,000ish write and 80,000,000ish read. The first AV I had was Avast! which I had liked on my previous system. After noticing it taking so much I/O I switched to Panda (supposing it wouldn't use TOO much during idle phase). However it only used a bit less I/O. Just a lot less memory and cpu and somewhat more network. My browser at the moment is Maxthon 3 (which I like a lot). Before this I was running chrome which had similar data and much higher cpu when running in the background was enabled. I'm not going to be running steam all the time and there aren't many alternatives to it. I like my browser very much, but I AM willing to switch if there's an obvious problem (I'm in programming, however I'm not a very good sysadmin, especially not when it comes to windows). Finally, my system almost stops lagging when I turn off the antivirus (and preferably steam) (some remains but once in every 5-6 hours for a few seconds so it isn't a big problem). My question (has a few parts): Is it possible to configure steam to lower it's I/O usage? (and maybe network while we're at it?) Which antivirus (very preferably free) uses lowest I/O while idle (I leave PC alone during active scans so that isn't a problem). Is there an obvious problem with my current browser and, if so, is there a way to fix it or should I switch and, if so, to what? (P.S. I've been on FFox for some time too). Info on system: Windows 7 (32 bit T_T, I am getting a new one in a few months but I want to keep using system during that time though). Hard Drive (main) is a Raid0. (Also have an external 1TB one which contains steam (and steam alone). As such it doesn't get used by much anything other than steam and isn't a very large problem. However steam still uses some I/O of registry) CPU: Intel(R) Core(TM)2 CPU [email protected] RAM: 6GB (3.25GB usable) (this and CPU have little effect as shown in next section) Additional info: Memory usage during problematic times: 44% CPU usage during problematic times: 35% Page File: main drive: system managed. 1TB drive: none. The current system I'm using is about 6 years old and is mainly a place holder while I await the new one in a few months. Final words: this is my 1st post on Super User (this question wouldn't feel right on Stack Overflow where I usually stay). If it doesn't have it's place here please tell me. If anything is wrong with it, same. Edit Technically I'm looking for a live thread detection program with minimal IO usage. I already have good active scan capability: Kaspersky (the free scanner uses the paid database) and MalwareBytes. Edit 2 Noticed another one, it seems that windows media player has been using stuff even when off! Turning it off and restarting now. If the problem is fixed I'll tell you guys. The reason I didn't notice it before was because I didn't have resource manager in front of me at the MOMENT of the problem. Now I did and it was at the very top of the list!

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• mod_perl loses STDOUT in middle of request

  - by puzzled72

  Hi, I have been having this weird issue where mod_perl seems to lose STDOUT in the middle of the request. So far I have eliminated everything I could think of. You might have seen this bug related to the following errors in error_log : Apache2 IO flush: (103) Apache2::RequestIO::read: (104) Software caused connection abort They are all the same error. It happens when the perl script running under mod_perl loses STDOUT when trying to print the result back to apache. I only notice this error on my servers running the following: (centos5.4) Perl 5.8.8-27 mod_perl 2.0.4-6 httpd 2.2.3-31 kernel-2.6.18-164.15.1 It's not the code This code has been working for months It's not network related The browser gets the error response from apache. It's not time related I get the error 15 or so seconds after I restart httpd It's not idle httpd related I have tried reducing the min/max SpareServers to 1 It's not load related I get the error even if there are only 10 sessions on httpd It's not related to the "fd < PERLIO_MAX_REFCOUNTABLE_FD" perl 5.8.8 bug I recompiled perl-5.8.8 with the patch mentioned here : https://bugzilla.redhat.com/show_bug.cgi?id=559832, same error. It appeared sometime between December 2009 and February 2010 sorry I cannot be more specific Anyone has any idea ? Anything that I have not tested ? Really Puzzled!

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• Fast User Switching still disabled after disabling Cisco AnyConnect VPN's "Start Before Login" feature

  - by mindless.panda

  I am running Windows 7 64 bit Ultimate and using Cisco AnyConnect VPN 2.5.3041. As expected, Fast User Switching got disabled as soon as I installed the VPN software. This FAQ from Cisco references how to enable Fast User Switching when their VPN product is installed: A. Microsoft automatically disables Fast User Switching in Windows XP when a GINA.dll is specified in the registry. The Cisco VPN Client installs the CSgina.dll to implement the "Start Before Login" feature. If you need Fast User Switching, then disable the "Start Before Login" feature. Registered users can get more information in Cisco Bug ID CSCdu24073 (registered customers only) in Bug Toolkit. My problem is that I have disabled this on the client, but fast user switching is still greyed out. This article mentions a registry edit, however they key they mention, GinaDLL, does not exist at the WinLogon registry point. Update: This article from Cisco covering AnyConnect specifically gives a one liner: AnyConnect is not compatible with fast user switching. The only problem is I now I had found a workaround before the last reformat/reinstall, but I can't remember what exactly I did previously.

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• How do I fix libdispatch problem crashing Mac OS X apps?

  - by david-ocallaghan

  In the last day I have started having a lot of brokenness on my Mac (MacBook Air running Mac OS X 10.6.2 with all software updates). Most noticably, iTunes no longer syncs with my iPhone. It fails with a crash dialog reporting "AppleMobileDeviceHelper quit unexpectedly" and an error dialog "iTunes was unable to load dataclass information from SyncServices. Reconnect or try again later." I've attempted the fix at support.apple.com/kb/HT1747 but it failed. I've also been having problems (at first seemingly unrelated) with the horrible Cisco VPN client, which started giving me this error: Error 51: Unable to communicate with the VPN subsystem I followed the steps at www.anders.com/cms/192/CiscoVPN/Error.51:.Unable.to.communicate.with.the.VPN.subsystem which don't seem to work for me, although I can connect if I use the command line with sudo : sudo vpnclient connect MyProfile I had a look in the Console app at the diagnostic messages and I noticed a pattern, that a number of apps were reporting "BUG IN CLIENT OF LIBDISPATCH". The affected programs are: AppleMobileBackup AppleMobileDeviceHelper Safari Webpage Preview Fetcher cvpnd (the Cisco VPN daemon) Of these, only the last is non-Apple software! The common text in the diagnostic messages is: Exception Type: EXC_BAD_INSTRUCTION (SIGILL) Exception Codes: 0x0000000000000001, 0x0000000000000000 Crashed Thread: 1 Dispatch queue: com.apple.libdispatch-manager Application Specific Information: BUG IN CLIENT OF LIBDISPATCH: Do not close random Unix descriptors I'm beginning to wonder if there's a permissions problem, or corruption of an important library, ... I should note that I've rebooted several times and verified the disk permissions and the disk. Any help would be great!

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• MySQL replication - rapidly growing relay bin logs

  - by Rob Forrest

  Morning all, I've got a really strange situation here this morning much like a reportedly fixed MySQL bug. http://bugs.mysql.com/bug.php?id=28421 My relay bin logs are rapidly filling with an infinite loop of junk made of this sort of thing. #121018 5:40:04 server id 101 end_log_pos 15598207 #Append_block: file_id: 2244 block_len: 8192 # at 15598352 #121018 5:40:04 server id 101 end_log_pos 15606422 #Append_block: file_id: 2244 block_len: 8192 # at 15606567 ... # at 7163731 #121018 5:38:39 server id 101 end_log_pos 7171801 #Append_block: file_id: 2243 block_len: 8192 WARNING: Ignoring Append_block as there is no Create_file event for file_id: 2243 # at 7171946 #121018 5:38:39 server id 101 end_log_pos 7180016 #Append_block: file_id: 2243 block_len: 8192 WARNING: Ignoring Append_block as there is no Create_file event for file_id: 2243 These log files grow to 1Gb within about a minute before rotating and starting again. These big files are interspersed with 1 or 2 smaller files with just this in /*!40019 SET @@session.max_insert_delayed_threads=0*/; /*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/; DELIMITER /*!*/; # at 4 #121023 9:43:05 server id 100 end_log_pos 106 Start: binlog v 4, server v 5.1.61-log created 121023 9:43:05 BINLOG ' mViGUA9kAAAAZgAAAGoAAAAAAAQANS4xLjYxLWxvZwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAEzgNAAgAEgAEBAQEEgAAUwAEGggAAAAICAgC '/*!*/; # at 106 #121023 9:43:05 server id 100 end_log_pos 156 Rotate to mysqld-relay-bin.000003 pos: 4 DELIMITER ; # End of log file ROLLBACK /* added by mysqlbinlog */; /*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/; We're running a master-master replication setup with the problematic server running mysql 5.1.61. The other server which is, for the moment, stable is running 5.1.58. Has anyone got any ideas what the solution is to this and moreover, what might have caused this?

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• Stop Windows Domain Environment Caching Old Passwords?

  - by Daryl Gill

  I have noticed on my domain environment; the old Administrator password (before password expire).. The client machines have cached the old password and have the ability to bypass the new password by entering the old one..? I have noticed on my domain environment; the old Administrator password (before password expire).. The client machines have cached the old password and have the ability to bypass the new password by entering the old one..? Basically; I'm running a UAC enabled domain, which needs the administrator password to continue basic stuff; installations and such. The password for the administrator account has been changed due to expiration of said accounts password. By accident a fellow administrator typed the old password and still bypassed the UAC with what should have been the incorrect password. Is this a bug with the environment? or something that needs to be tweaked in the server sided settings? Is this a bug with the environment? or something that needs to be tweaked in the server sided settings?

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• Member Status: Inquorate in RHEL 5.6

  - by Eugene S

  I've encountered a strange issue. I had to change the time on my Linux RHEL cluster system. I've done it using the following command from the root user: date +%T -s "10:13:13" After doing this, some message appeared relating to <emerg> #1: Quorum Dissolved (however I didn't capture the message completely). In order to investigate the issue I looked at /var/log/messages and I've discovered these errors. Below is the output of few commands I got when tried to investigate the issue, however I don't have enough knowledge to make use of this information. [root@system1a ~]# clustat Cluster Status for system4081 @ Sun Mar 25 11:45:48 2012 Member Status: Inquorate Member Name ID Status ------ ---- ---- ------ chb_sys1a 1 Online, Local chb_sys2a 2 Offline [root@system1a ~]# cman_tool nodes Node Sts Inc Joined Name 1 M 872 2012-03-25 08:43:07 chb_sys1a 2 X 0 chb_sys2a [root@system1a ~]# qdiskd -f -d [17654] debug: Loading configuration information [17654] debug: 0 heuristics loaded [17654] debug: Quorum Daemon: 0 heuristics, 1 interval, 10 tko, 0 votes [17654] debug: Run Flags: 00000035 [17654] info: Quorum Daemon Initializing stat: Bad address [17654] crit: Initialization failed I tried to search through the internet and found out a quite similar issue here. However, for some reason I am not able to access the bug on bugzilla. The link to the bug is here

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• Router gets disconnected once I terminate my SIP application

  - by TacB0sS

  Hey, Here is an interesting one, I have a SIP VoIP application which is able to register to the PBX server, and I can invite and see the user call on the callee end receiving an Invite, and on the caller end I see the Ringing response... now here is interesting part, if I close my application with out any notification to the server my router disconnects and restart, after a short while (30 - 150 sec). I could fix that if I would complete the ACK BYE process, but I'm just wondering why does my router hangs up? any ideas? My Router is TNN-Siemens SL2-141, thought this might matter Update: this is what I found: SIP ALG allows two or more simultaneous VoIP phone calls made by VoIP clients through this router. which means that if I disable it I would not be able to do the testing I'm trying so badly to do, and since I don't have access to another router, I must handle it with the bug then... I can say that this never happened to me with one user connecting, but then again I didn't have anyone to invite then, I received from the SIP UAS 503 when I tried to invite an imaginary user. This bug only occur after I connected the second SIP UAC and invited it and closed the application. Adam.

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• LAN->LAN IP translation (for TortoiseSVN + Artifacts + Buffalo router)

  - by Armchair Bronco

  Here's my scenario: I've got a VisualSVN server on my main dev box @ home. I'm also using Visual Studio 2010, TortoiseSVN, VisualSVN client (for source control), and Versioned 'Artifacts' (for bug tracking). (I had to modify the fake URL's below to use only one slash because as a new user, I can't post more than one real URL.) I've got my Buffalo AirStation WHR-HP-G300N router properly configured so my business partner can connect to the SVN server. I have port forwarding enabled for the internet-side IP address (like http:/99.888.77.66:443) which gets forwarded to an internal IP (like 192.168.11.6). This part is working great. The problem I'm having is with the integration piece between TortoiseSVN and my bug tracking system. I need to provide a bugtraq:url property, but I haven't been able to get relative paths to work. So I'm forced to use an absolute URL. On my end, I need to use the name of my server (for example: bugtraq:url = https:/my-server/svn/bla..), but this doesn't work for my partner. He needs to specify the IP address (for example: bugtraq:url = https:/999.888.77.66:443/svn/bla...) Is there a way to configure my router such that the IP address for this parameter gets re-routed/re-mapped to "https://my-server" if the request originates from the LAN itself? My router's software supports LAN-Internet and Internet-LAN, but I don't see LAN-LAN.

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• Windows 7 autostarting apps as administrator

  - by Fujishiro

  Hello everyone. The question is easy to answer I guess. (Tried to search here, didn't find an answer.) So. The deal: There is a bug in OpenOffice (haha ..just one? :)), which prevents the spellcheck. You have to start it with right-click , run as administrator to make it work. Tried also setting this at the 'properties', but it didn't work. But 'quickstart.exe' would be also enough to make this work. (OpenOffice's quickstarter). So I'd like to run it at boot, as an admin, like I'd do with right-click. How to do THAT? (Actually there is a different bug for spellcheck on Win7. One have to run oowriter.exe as an admin, and then install the extension BY HAND from Program Files...\share...*.oxt. And THEN it'll work IF you run the app as an admin. (I'll buy SoftMaker's office as soon as the hu spellcheck arrives, but until then I have to make this work. Thanks for the answers in advance.))

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• How to mount vfat drive on Linux with ownership other than root?

  - by Norman Ramsey

  I'm running into trouble mounting an iPod on a newly upgraded Debian Squeeze. I suspect either a protocol has changed or I've tickled a bug, which I don't know where to report. I'm trying to mount the iPod so that I have permission to read and write it. But my efforts come to nothing: $ sudo mount -v -t vfat -o uid=32074,gid=6202 /dev/sde2 /mnt /dev/sde2 on /mnt type vfat (rw,uid=32074,gid=6202) $ ls -l /mnt total 80 drwxr-xr-x 2 root root 16384 Jan 1 2000 Calendars drwxr-xr-x 2 root root 16384 Jan 1 2000 Contacts drwxr-xr-x 2 root root 16384 Jan 1 2000 Notes drwxr-xr-x 3 root root 16384 Jun 23 2007 Photos drwxr-xr-x 6 root root 16384 Jun 19 2007 iPod_Control $ sudo umount /mnt $ sudo mount -v -t vfat -o uid=nr,gid=nr /dev/sde2 /mnt /dev/sde2 on /mnt type vfat (rw,uid=32074,gid=6202) $ ls -l /mnt total 80 drwxr-xr-x 2 root root 16384 Jan 1 2000 Calendars drwxr-xr-x 2 root root 16384 Jan 1 2000 Contacts drwxr-xr-x 2 root root 16384 Jan 1 2000 Notes drwxr-xr-x 3 root root 16384 Jun 23 2007 Photos drwxr-xr-x 6 root root 16384 Jun 19 2007 iPod_Control As you see, I've tried both symbolic and numberic IDs, but the files persist in being owned by root (and only writable by root). The IDs are really mine; I've had the UID since 1993. $ id uid=32074(nr) gid=6202(nr) groups=6202(nr),0(root),2(bin),4(adm),... I've put an strace at http://pastebin.com/Xue2u9FZ, and the mount(2) call looks good: mount("/dev/sde2", "/mnt", "vfat", MS_MGC_VAL, "uid=32074,gid=6202") = 0 Finally, here's my kernel version from uname -a: Linux homedog 2.6.32-5-686 #1 SMP Mon Jun 13 04:13:06 UTC 2011 i686 GNU/Linux Does anyone know if I should be doing something different, or If there is a workaround, or If this is a bug, where it should be reported?

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• Diagnosing linux issues with ipod syncing in Ubuntu

  - by alexpotato

  Issue: I am currently using Ubuntu 9.10 with a 5th generation Ipod 60 GB Black video classic. In general, it seems that Ubuntu can always detect the usb hd and displays it on my desktop. However, some applications seem to detect the ipod (e.g. Rythymbox and gtkpod do but Banshee does not) and some don't. I narrowed down the banshee issue to a bug that requires Nautilus to be restarted (although it would be nice to not have to do this). Also, Whenever I sync between these applications, it appears that everything is working fine during the sync but when I disconnect the ipod and browse, all of the songs seem to be there but the playlists are not. If I reconnect the ipod, in banshee specifically it sees the space usage as "other". What I am looking for is some way to at least understand what is and is not working OR directions to some where that can help me learn what's going on. I have already tried: -IRC. Either the channel is too general (e.g. #ubuntu) or no one is ever one (e.g. #banshee) -The web. Most of what I've found is too specific to one particular bug or too general. Any thoughts?

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• security update in centos, which way is it?

  - by user119720

  Recently something have been bothered with my mind regarding my linux CentOS box.My client have been asking to set up a CentOS machine in their environment which works as server. One of their requirement is to make sure that the set up is to be as secure as possible. Mostly have been covered except the security update inside CentOS. So my question are as follows: 1.. How to apply the latest security,patches or bug fixes in CentOS? When doing some research, I've been told that we can update the security of CentOS by running yum install yum-security but after install this plug in,seems there is no output for this method.Its like this command is not working anymore. 2.. Can i update the security patches through rpm packages? I couldn't find any site that can download the security patches,enhancement or bug fixes for CentOS.But I know that CentOS have been releasing these update through their CentOS announcement here It just it lack of documentation on how to apply these update into my CentOS installation. For now the only way that I know is to run yum update I am hoping that someone can help me to clarify these matter.Thanks.

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• Saving a file in a CSV type in Excel always removes the BOM

  - by rickp

  I've been trying to find a reasonable solution/explanation (unsuccessfully) to find out why Excel defaults to removing the BOM when saving a file to the CSV type. Please forgive me if you find this a duplicate of this question. This handles reading CSV files with non-ASCII encoding, but it doesn't cover saving the file back out (which is where the biggest issue lies). Here is my current situation (which I'm going to gather is common among localized software dealing with Unicode characters and a CSV format): We export data to a CSV format using UTF-16LE, ensuring the BOM is set (0xFFFE). We validate after the file is generated with a Hex editor to ensure it was set correctly. Open the file in Excel (for this example we're exporting Japanese characters) and witness that Excel handles loading the file with the correct encoding. Attempts to save this file will prompt you with a warning message indicating that the file may contain features that may not be compatible with Unicode encoding, but asks if you'd like to save anyway. If you select the Save As dialog, it will immediately ask you to save the file as "Unicode Text" rather than CSV. If you select the "CSV" extension and save the file it removes the BOM (obviously along with all the Japanese characters). Why would this happen? Is there a solution to this problem, or is this a known 'bug'/limitation of Excel? Additionally (as a side issue) it appears that Excel, when loading UTF-16LE encoded CSV files, only uses TAB delimiters. Again, is this another known 'bug'/limitation of Excel?

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• Diagnosing a BSOD involving USB

  - by David Ebbo

  [Running Win7 Ultimate 64 bit] My new HP Pavilion Elite HPE-450t has been plagued by BSDO crashes since I got it about 5 weeks ago. The crashes are somewhat rare, sometimes not occurring for 3 or 4 days. I have spent a lot of time trying to isolate the device that could be at fault, but I have seen crashes with only the keyboard and mouse plugged in (as USB devices), and I tried two sets of keyboard/mouse, so I'm running out of ideas. :( The WhoCrashed tool gave this info about my latest BSOD: crash dump file: C:\Windows\Minidump\121310-11887-01.dmp This was probably caused by the following module: usbport.sys (USBPORT+0x2DE4E) Bugcheck code: 0xFE (0x5, 0xFFFFFA8008F571A0, 0x80863B34, 0xFFFFFA80092F2510) Error: BUGCODE_USB_DRIVER file path: C:\Windows\system32\drivers\usbport.sys product: Microsoft® Windows® Operating System company: Microsoft Corporation description: USB 1.1 & 2.0 Port Driver Bug check description: This indicates that an error has occurred in a Universal Serial Bus (USB) driver. The crash took place in a standard Microsoft module. Your system configuration may be incorrect. Possibly this problem is caused by another driver on your system which cannot be identified at this time. I looked at http://msdn.microsoft.com/en-us/library/ff560407(VS.85).aspx, and for Parameter1 = 0x5, it says "A hardware failure has occurred due to a bad physical address found in a hardware data structure. This is not due to a driver bug". Should I conclude that it's a hardware issue in the machine itself, rather than a bad USB driver or USB device? Here is the MiniDump, in case someone can get more info out of it: http://ewt52q.blu.livefilestore.com/y1peS4Ce8nSK1SXghzMDoxDWXlaEu-EKCJsv25y8y5DXXIUzZ9U0_tYgFJXd939fykwa0zRmx98IW0PYG18GioqKAuARYjtspSA/121310-11887-01.dmp?download&psid=2

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• Getting Apache to serve same directory with different authentication over SSL?

  - by Lasse V. Karlsen

  I have set up VisualSVN server, a Subversion server that internally uses Apache, to serve my subversion repositories. I've managed to integrate WebSVN into it as well, and just now was able to get it to serve my repositories through WebSVN without having to authenticate, ie. no username or password prompt comes up. This is good. However, with this set up there is apparently no way for me to authenticate to WebSVN at all, which means all my private repositories are now invisible as far as WebSVN goes. I noticed there is a "Listen 81" directive in the .conf file, since I'm running the server on port 81 instead of 80, so I was wondering if I could set up a https:// connection to a different port, that did require authentication? The reason I need access to my private repositories is that I have linked my bug tracking system to the subversion repositories, so if I click a link in the bug tracking system, it will take me to diffs for the relevant files in WebSVN, and some products are in private repositories. Here's my Location section for WebSVN: <Location /websvn/> Options FollowSymLinks SVNListParentPath on SVNParentPath "C:/Repositories/" SVNPathAuthz on AuthName "Subversion Repository" AuthType Basic AuthBasicProvider file AuthUserFile "C:/Repositories/htpasswd" AuthzSVNAccessFile "C:/Repositories/authz" Satisfy Any Require valid-user </Location> Is there any way I can set up a separate section for a different port, say 8100, that does not have the Satisfy Any directive there, which is what enable anonymous access. Note that a different sub-directory on the server is acceptable as well, so /websvn_secure/, if I can make a location section for that and effectively serve the same content only without the Satisfy Any directive, that'd be good too.

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• CentOS 5.6: How to resolve php53 RPM dependency conflict with php-mcrypt and php-common?

  - by Stefan Lasiewski

  We are running a CentOS 5.6 system, and want to install php53 with php-mcrypt. However, this introduces a dependency conflict between php-common & php53-common. Does anyone have a good workaround for this problem? host # yum install php-mcrypt Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * epel: linux.mirrors.es.net Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package php-mcrypt.x86_64 0:5.1.6-15.el5.centos.1 set to be updated --> Processing Dependency: php-api = 20041225 for package: php-mcrypt --> Processing Dependency: php >= 5.1.6 for package: php-mcrypt --> Running transaction check ---> Package php.x86_64 0:5.1.6-27.el5_5.3 set to be updated --> Processing Dependency: php-cli = 5.1.6-27.el5_5.3 for package: php ---> Package php-common.x86_64 0:5.1.6-27.el5_5.3 set to be updated --> Running transaction check ---> Package php-cli.x86_64 0:5.1.6-27.el5_5.3 set to be updated --> Processing Conflict: php53-common conflicts php-common --> Finished Dependency Resolution php53-common-5.3.3-1.el5_6.1.x86_64 from installed has depsolving problems --> php53-common conflicts with php-common Error: php53-common conflicts with php-common You could try using --skip-broken to work around the problem You could try running: package-cleanup --problems package-cleanup --dupes rpm -Va --nofiles --nodigest This is apparently a known problem (See php-devel, Bug 700179 and Bug 695708) and this post at the CentOS forums, but there is no official fix yet.

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• How can I get VirtualBox to run at 1366x768?

  - by Joe White

  I'm trying to run Windows 8 in VirtualBox. My laptop's display is exactly 1366x768. Windows 8 disables some of its features if the resolution is less than 1366x768, so I need to run the guest OS fullscreen. The problem is, VirtualBox refuses to run the guest at 1366x768. When VirtualBox is "fullscreen", the guest is only 1360x768 -- six pixels too narrow. So there's a three-pixel black bar at the left and right sides of the display. This user had the same problem, but the accepted answer is "install the Guest Additions", which I've already done; that got me to 1360, but not to 1366. According to the VirtualBox ticket tracker, there used to be a bug where the guest's screen width would be rounded down to the nearest multiple of 8, but they claim to have fixed the bug in version 3.2.12. I'm using version 4.1.18 and seeing the same problem they claim to have fixed, so either they broke it again, they were wrong about ever having fixed it, or my problem is something else entirely. This answer suggested giving the VM 128MB of video memory, and claimed no problems getting 1366x768 afterward. When I created the VM, its display memory was already defaulted to 128 MB. I tried increasing it to 256MB, but with no effect: the guest is still six pixels too narrow. My host OS is Windows 7 64-bit, and I'm running VirtualBox 4.1.18. How can I get VirtualBox to run my guest OS fullscreen at my display's native resolution of 1366x768?

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• White Screen, No Errors.

  - by GruffTech

  So.. Interesting problem for you guys, As I'm completely lost as to what to do, or where to take the next step. Server & Application Environment. CentOS release 5.3 (Final) Apache 2.2.3-22 EnableSendfile off EnableMMAP off ErrorLog logs/error_log LogLevel debug PHP-5.2.6-2 error_reporting = E_ALL display_errors = on log_errors = on max_execution_time=300 max_input_time=60 memory_limit=512mb Kohana 2.3 PHP Environment. HAProxy 1.3.15.6-2 MemCacheD 1.2.6-1 Our application is split between 3 web servers, mounting a NFS Storage server, and sticky load balancing between the 3 web servers. The application seemingly runs great, but every so often, instead of loading, the application just shows a pure white page. Not a 404 Error, or a 500 Server Error, a clean white page. And it returns instantly, so its not a execution time error. Nothing in the Error log, or Server-Error Log, Proxy log shows standard proxied connection, Just the standard 200-Status in Access log, with 256 bytes transferred. To me, this leads to tell me that the application itself is having a problem. A rare, unexplainable, seemingly random, problem that causes what we've now called the "White Screen of Death." Our developers all say that since there is nothing going to our error logs, that it must be a server problem. But I say the same thing, There's nothing going to ANY of our logs (relevent to this anyway), and we're not having httpd children crash from what i can tell. Any ideas on how i can increase my logs, or somehow prove that its not a bug in PHP, Apache, CentOS, ect? Or if it is somehow a bug, identify it?

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• What's needed in a complete ASP.NET environment?

  - by Christian W

  We have a ASP3.0 application with a few ASP.NET (2.0) dittys mixed in. (Our longtime goal is to migrate everything to ASP.NET but that's not important for this issue) Our current test/deploy workflow is like this: 1 Use notepad++ or VS2008 to fix a bug/feature (depending on what I have open) 2 Open my virtual test-server 3 Copy the fixed file over, either with explorer, or if I can be bothered to open it, WinMerge 4 Test that the fix works 5 Close the virtual test-server 6 Connect to our host with VPN 7 Use WinMerge to update the files necessary 8 Pray to higher powers that the production environment is not so different that something bombs. To make things worse, only I have access to my "test-server". So I'm the only one testing it. I really want to make this a bit more robust, I even have a subversion setup running. But I always forget to commit changes... And I don't even work in my checked out folder, but a copy of what is currently in production... Can someone recommend some good reading on deploying, testing, staging and stuff like that. I currently use VS2008 and want to use subversion or GIT (or any other free VCS). Since I'm the only developer, teamsystem is not really an option (cost-related). I have found myself developing an "improved" feature, only to find a bug in the same feature in the production system. And since my "improved" feature incorporated deleting some old functionality, I have to fix bugs directly in production... That's not a fun feeling... (I have inherited this system recently... So it's not directly my fault that it is like this ;) )

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• Saving a file in a CSV type in Excel always removes the BOM

  - by rickp

  I've been trying to find a reasonable solution/explanation (unsuccessfully) to find out why Excel defaults to removing the BOM when saving a file to the CSV type. Please forgive me if you find this a duplicate of this question. This handles reading CSV files with non-ASCII encoding, but it doesn't cover saving the file back out (which is where the biggest issue lies). Here is my current situation (which I'm going to gather is common among localized software dealing with Unicode characters and a CSV format): We export data to a CSV format using UTF-16LE, ensuring the BOM is set (0xFFFE). We validate after the file is generated with a Hex editor to ensure it was set correctly. Open the file in Excel (for this example we're exporting Japanese characters) and witness that Excel handles loading the file with the correct encoding. Attempts to save this file will prompt you with a warning message indicating that the file may contain features that may not be compatible with Unicode encoding, but asks if you'd like to save anyway. If you select the Save As dialog, it will immediately ask you to save the file as "Unicode Text" rather than CSV. If you select the "CSV" extension and save the file it removes the BOM (obviously along with all the Japanese characters). Why would this happen? Is there a solution to this problem, or is this a known 'bug'/limitation of Excel? Additionally (as a side issue) it appears that Excel, when loading UTF-16LE encoded CSV files, only uses TAB delimiters. Again, is this another known 'bug'/limitation of Excel?

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