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  • Visual Studio 2013 Static Code Analysis in depth: What? When and How?

    - by Hosam Kamel
    In this post I'll illustrate in details the following points What is static code analysis? When to use? Supported platforms Supported Visual Studio versions How to use Run Code Analysis Manually Run Code Analysis Automatically Run Code Analysis while check-in source code to TFS version control (TFSVC) Run Code Analysis as part of Team Build Understand the Code Analysis results & learn how to fix them Create your custom rule set Q & A References What is static Rule analysis? Static Code Analysis feature of Visual Studio performs static code analysis on code to help developers identify potential design, globalization, interoperability, performance, security, and a lot of other categories of potential problems according to Microsoft's rules that mainly targets best practices in writing code, and there is a large set of those rules included with Visual Studio grouped into different categorized targeting specific coding issues like security, design, Interoperability, globalizations and others. Static here means analyzing the source code without executing it and this type of analysis can be performed through automated tools (like Visual Studio 2013 Code Analysis Tool) or manually through Code Review which already supported in Visual Studio 2012 and 2013 (check Using Code Review to Improve Quality video on Channel9) There is also Dynamic analysis which performed on executing programs using software testing techniques such as Code Coverage for example. When to use? Running Code analysis tool at regular intervals during your development process can enhance the quality of your software, examines your code for a set of common defects and violations is always a good programming practice. Adding that Code analysis can also find defects in your code that are difficult to discover through testing allowing you to achieve first level quality gate for you application during development phase before you release it to the testing team. Supported platforms .NET Framework, native (C and C++) Database applications. Support Visual Studio versions All version of Visual Studio starting Visual Studio 2013 (except Visual Studio Test Professional) check Feature comparisons Create and modify a custom rule set required Visual Studio Premium or Ultimate. How to use? Code Analysis can be run manually at any time from within the Visual Studio IDE, or even setup to automatically run as part of a Team Build or check-in policy for Team Foundation Server. Run Code Analysis Manually To run code analysis manually on a project, on the Analyze menu, click Run Code Analysis on your project or simply right click on the project name on the Solution Explorer choose Run Code Analysis from the context menu Run Code Analysis Automatically To run code analysis each time that you build a project, you select Enable Code Analysis on Build on the project's Property Page Run Code Analysis while check-in source code to TFS version control (TFSVC) Team Foundation Version Control (TFVC) provides a way for organizations to enforce practices that lead to better code and more efficient group development through Check-in policies which are rules that are set at the team project level and enforced on developer computers before code is allowed to be checked in. (This is available only if you're using Team Foundation Server) Require permissions on Team Foundation Server: you must have the Edit project-level information permission set to Allow typically your account must be part of Project Administrators, Project Collection Administrators, for more information about Team Foundation permissions check http://msdn.microsoft.com/en-us/library/ms252587(v=vs.120).aspx In Team Explorer, right-click the team project name, point to Team Project Settings, and then click Source Control. In the Source Control dialog box, select the Check-in Policy tab. Click Add to create a new check-in policy. Double-click the existing Code Analysis item in the Policy Type list to change the policy. Check or Uncheck the policy option based on the configurations you need to perform as illustrated below: Enforce check-in to only contain files that are part of current solution: code analysis can run only on files specified in solution and project configuration files. This policy guarantees that all code that is part of a solution is analyzed. Enforce C/C++ Code Analysis (/analyze): Requires that all C or C++ projects be built with the /analyze compiler option to run code analysis before they can be checked in. Enforce Code Analysis for Managed Code: Requires that all managed projects run code analysis and build before they can be checked in. Check Code analysis rule set reference on MSDN What is Rule Set? Rule Set is a group of code analysis rules like the example below where Microsoft.Design is the rule set name where "Do not declare static members on generic types" is the code analysis rule Once you configured the Analysis rule the policy will be enabled for all the team member in this project whenever a team member check-in any source code to the TFSVC the policy section will highlight the Code Analysis policy as below TFS is a very extensible platform so you can simply implement your own custom Code Analysis Check-in policy, check this link for more details http://msdn.microsoft.com/en-us/library/dd492668.aspx but you have to be aware also about compatibility between different TFS versions check http://msdn.microsoft.com/en-us/library/bb907157.aspx Run Code Analysis as part of Team Build With Team Foundation Build (TFBuild), you can create and manage build processes that automatically compile and test your applications, and perform other important functions. Code Analysis can be enabled in the Build Definition file by selecting the correct value for the build process parameter "Perform Code Analysis" Once configure, Kick-off your build definition to queue a new build, Code Analysis will run as part of build workflow and you will be able to see code analysis warning as part of build report Understand the Code Analysis results & learn how to fix them Now after you went through Code Analysis configurations and the different ways of running it, we will go through the Code Analysis result how to understand them and how to resolve them. Code Analysis window in Visual Studio will show all the analysis results based on the rule sets you configured in the project file properties, let's dig deep into what each result item contains: 1 Check ID The unique identifier for the rule. CheckId and Category are used for in-source suppression of a warning.       2 Title The title of warning message       3 Description A description of the problem or suggested fix 4 File Name File name and the line of code number which violate the code analysis rule set 5 Category The code analysis category for this error 6 Warning /Error Depend on how you configure it in the rule set the default is Warning level 7 Action Copy: copy the warning information to the clipboard Create Work Item: If you're connected to Team Foundation Server you can create a work item most probably you may create a Task or Bug and assign it for a developer to fix certain code analysis warning Suppress Message: There are times when you might decide not to fix a code analysis warning. You might decide that resolving the warning requires too much recoding in relation to the probability that the issue will arise in any real-world implementation of your code. Or you might believe that the analysis that is used in the warning is inappropriate for the particular context. You can suppress individual warnings so that they no longer appear in the Code Analysis window. Two options available: In Source inserts a SuppressMessage attribute in the source file above the method that generated the warning. This makes the suppression more discoverable. In Suppression File adds a SuppressMessage attribute to the GlobalSuppressions.cs file of the project. This can make the management of suppressions easier. Note that the SuppressMessage attribute added to GlobalSuppression.cs also targets the method that generated the warning. It does not suppress the warning globally.       Visual Studio makes it very easy to fix Code analysis warning, all you have to do is clicking on the Check Id hyperlink if you are not aware how to fix the warring and you'll be directed to MSDN online or local copy based on the configuration you did while installing Visual Studio and you will find all the information about the warring including how to fix it. Create a Custom Code Analysis Rule Set The Microsoft standard rule sets provide groups of rules that are organized by function and depth. For example, the Microsoft Basic Design Guidelines Rules and the Microsoft Extended Design Guidelines Rules contain rules that focus on usability and maintainability issues, with added emphasis on naming rules in the Extended rule set, you can create and modify a custom rule set to meet specific project needs associated with code analysis. To create a custom rule set, you open one or more standard rule sets in the rule set editor. Create and modify a custom rule set required Visual Studio Premium or Ultimate. You can check How to: Create a Custom Rule Set on MSDN for more details http://msdn.microsoft.com/en-us/library/dd264974.aspx Q & A Visual Studio static code analysis vs. FxCop vs. StyleCpp http://www.excella.com/blog/stylecop-vs-fxcop-difference-between-code-analysis-tools/ Code Analysis for SharePoint Apps and SPDisposeCheck? This post lists some of the rule set you can run specifically for SharePoint applications and how to integrate SPDisposeCheck as well. Code Analysis for SQL Server Database Projects? This post illustrate how to run static code analysis on T-SQL through SSDT ReSharper 8 vs. Visual Studio 2013? This document lists some of the features that are provided by ReSharper 8 but are missing or not as fully implemented in Visual Studio 2013. References A Few Billion Lines of Code Later: Using Static Analysis to Find Bugs in the Real World http://cacm.acm.org/magazines/2010/2/69354-a-few-billion-lines-of-code-later/fulltext What is New in Code Analysis for Visual Studio 2013 http://blogs.msdn.com/b/visualstudioalm/archive/2013/07/03/what-is-new-in-code-analysis-for-visual-studio-2013.aspx Analyze the code quality of Windows Store apps using Visual Studio static code analysis http://msdn.microsoft.com/en-us/library/windows/apps/hh441471.aspx [Hands-on-lab] Using Code Analysis with Visual Studio 2012 to Improve Code Quality http://download.microsoft.com/download/A/9/2/A9253B14-5F23-4BC8-9C7E-F5199DB5F831/Using%20Code%20Analysis%20with%20Visual%20Studio%202012%20to%20Improve%20Code%20Quality.docx Originally posted at "Hosam Kamel| Developer & Platform Evangelist" http://blogs.msdn.com/hkamel

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  • Fragmented Log files could be slowing down your database

    - by Fatherjack
    Something that is sometimes forgotten by a lot of DBAs is the fact that database log files get fragmented in the same way that you get fragmentation in a data file. The cause is very different but the effect is the same – too much effort reading and writing data. Data files get fragmented as data is changed through normal system activity, INSERTs, UPDATEs and DELETEs cause fragmentation and most experienced DBAs are monitoring their indexes for fragmentation and dealing with it accordingly. However, you don’t hear about so many working on their log files. How can a log file get fragmented? I’m glad you asked. When you create a database there are at least two files created on the disk storage; an mdf for the data and an ldf for the log file (you can also have ndf files for extra data storage but that’s off topic for now). It is wholly possible to have more than one log file but in most cases there is little point in creating more than one as the log file is written to in a ‘wrap-around’ method (more on that later). When a log file is created at the time that a database is created the file is actually sub divided into a number of virtual log files (VLFs). The number and size of these VLFs depends on the size chosen for the log file. VLFs are also created in the space added to a log file when a log file growth event takes place. Do you have your log files set to auto grow? Then you have potentially been introducing many VLFs into your log file. Let’s get to see how many VLFs we have in a brand new database. USE master GO CREATE DATABASE VLF_Test ON ( NAME = VLF_Test, FILENAME = 'C:\Program Files\Microsoft SQL Server\MSSQL10.ROCK_2008\MSSQL\DATA\VLF_Test.mdf', SIZE = 100, MAXSIZE = 500, FILEGROWTH = 50 ) LOG ON ( NAME = VLF_Test_Log, FILENAME = 'C:\Program Files\Microsoft SQL Server\MSSQL10.ROCK_2008\MSSQL\DATA\VLF_Test_log.ldf', SIZE = 5MB, MAXSIZE = 250MB, FILEGROWTH = 5MB ); go USE VLF_Test go DBCC LOGINFO; The results of this are firstly a new database is created with specified files sizes and the the DBCC LOGINFO results are returned to the script editor. The DBCC LOGINFO results have plenty of interesting information in them but lets first note there are 4 rows of information, this relates to the fact that 4 VLFs have been created in the log file. The values in the FileSize column are the sizes of each VLF in bytes, you will see that the last one to be created is slightly larger than the others. So, a 5MB log file has 4 VLFs of roughly 1.25 MB. Lets alter the CREATE DATABASE script to create a log file that’s a bit bigger and see what happens. Alter the code above so that the log file details are replaced by LOG ON ( NAME = VLF_Test_Log, FILENAME = 'C:\Program Files\Microsoft SQL Server\MSSQL10.ROCK_2008\MSSQL\DATA\VLF_Test_log.ldf', SIZE = 1GB, MAXSIZE = 25GB, FILEGROWTH = 1GB ); With a bigger log file specified we get more VLFs What if we make it bigger again? LOG ON ( NAME = VLF_Test_Log, FILENAME = 'C:\Program Files\Microsoft SQL Server\MSSQL10.ROCK_2008\MSSQL\DATA\VLF_Test_log.ldf', SIZE = 5GB, MAXSIZE = 250GB, FILEGROWTH = 5GB ); This time we see more VLFs are created within our log file. We now have our 5GB log file comprised of 16 files of 320MB each. In fact these sizes fall into all the ranges that control the VLF creation criteria – what a coincidence! The rules that are followed when a log file is created or has it’s size increased are pretty basic. If the file growth is lower than 64MB then 4 VLFs are created If the growth is between 64MB and 1GB then 8 VLFs are created If the growth is greater than 1GB then 16 VLFs are created. Now the potential for chaos comes if the default values and settings for log file growth are used. By default a database log file gets a 1MB log file with unlimited growth in steps of 10%. The database we just created is 6 MB, let’s add some data and see what happens. USE vlf_test go -- we need somewhere to put the data so, a table is in order IF OBJECT_ID('A_Table') IS NOT NULL DROP TABLE A_Table go CREATE TABLE A_Table ( Col_A int IDENTITY, Col_B CHAR(8000) ) GO -- Let's check the state of the log file -- 4 VLFs found EXECUTE ('DBCC LOGINFO'); go -- We can go ahead and insert some data and then check the state of the log file again INSERT A_Table (col_b) SELECT TOP 500 REPLICATE('a',2000) FROM sys.columns AS sc, sys.columns AS sc2 GO -- insert 500 rows and we get 22 VLFs EXECUTE ('DBCC LOGINFO'); go -- Let's insert more rows INSERT A_Table (col_b) SELECT TOP 2000 REPLICATE('a',2000) FROM sys.columns AS sc, sys.columns AS sc2 GO 10 -- insert 2000 rows, in 10 batches and we suddenly have 107 VLFs EXECUTE ('DBCC LOGINFO'); Well, that escalated quickly! Our log file is split, internally, into 107 fragments after a few thousand inserts. The same happens with any logged transactions, I just chose to illustrate this with INSERTs. Having too many VLFs can cause performance degradation at times of database start up, log backup and log restore operations so it’s well worth keeping a check on this property. How do we prevent excessive VLF creation? Creating the database with larger files and also with larger growth steps and actively choosing to grow your databases rather than leaving it to the Auto Grow event can make sure that the growths are made with a size that is optimal. How do we resolve a situation of a database with too many VLFs? This process needs to be done when the database is under little or no stress so that you don’t affect system users. The steps are: BACKUP LOG YourDBName TO YourBackupDestinationOfChoice Shrink the log file to its smallest possible size DBCC SHRINKFILE(FileNameOfTLogHere, TRUNCATEONLY) * Re-size the log file to the size you want it to, taking in to account your expected needs for the coming months or year. ALTER DATABASE YourDBName MODIFY FILE ( NAME = FileNameOfTLogHere, SIZE = TheSizeYouWantItToBeIn_MB) * – If you don’t know the file name of your log file then run sp_helpfile while you are connected to the database that you want to work on and you will get the details you need. The resize step can take quite a while This is already detailed far better than I can explain it by Kimberley Tripp in her blog 8-Steps-to-better-Transaction-Log-throughput.aspx. The result of this will be a log file with a VLF count according to the bullet list above. Knowing when VLFs are being created By complete coincidence while I have been writing this blog (it’s been quite some time from it’s inception to going live) Jonathan Kehayias from SQLSkills.com has written a great article on how to track database file growth using Event Notifications and Service Broker. I strongly recommend taking a look at it as this is going to catch any sneaky auto grows that take place and let you know about them right away. Hassle free monitoring of VLFs If you are lucky or wise enough to be using SQL Monitor or another monitoring tool that let’s you write your own custom metrics then you can keep an eye on this very easily. There is a custom metric for VLFs (written by Stuart Ainsworth) already on the site and there are some others there are very useful so take a moment or two to look around while you are there. Resources MSDN – http://msdn.microsoft.com/en-us/library/ms179355(v=sql.105).aspx Kimberly Tripp from SQLSkills.com – http://www.sqlskills.com/BLOGS/KIMBERLY/post/8-Steps-to-better-Transaction-Log-throughput.aspx Thomas LaRock at Simple-Talk.com – http://www.simple-talk.com/sql/database-administration/monitoring-sql-server-virtual-log-file-fragmentation/ Disclosure I am a Friend of Red Gate. This means that I am more than likely to say good things about Red Gate DBA and Developer tools. No matter how awesome I make them sound, take the time to compare them with other products before you contact the Red Gate sales team to make your order.

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  • Logs are written to *.log.1 instead of *.log

    - by funkadelic
    For some reason my log files are writing to the *.log.1 files instead of the *.log files, e.g. for my Postfix log files it is writing to /var/log/mail.log.1 and not /var/log/mail.log as expected. Same goes for mail.err. It looks like it's also doing it for auth.log and syslog. Here is a ls -lt snippet of my /var/log directory, showing the more recently touched log files in reverse chronological order -rw-r----- 1 syslog adm 4608882 Dec 18 12:12 auth.log.1 -rw-r----- 1 syslog adm 4445258 Dec 18 12:12 syslog.1 -rw-r----- 1 syslog adm 2687708 Dec 18 12:11 mail.log.1 -rw-r----- 1 root adm 223033 Dec 18 12:04 denyhosts -rw-r--r-- 1 root root 56631 Dec 18 11:40 dpkg.log -rw-rw-r-- 1 root utmp 292584 Dec 18 11:39 lastlog -rw-rw-r-- 1 root utmp 9216 Dec 18 11:39 wtmp ... And ls -l mail.log*: -rw-r----- 1 syslog adm 0 Dec 16 06:31 mail.log -rw-r----- 1 syslog adm 2699809 Dec 18 12:28 mail.log.1 -rw-r----- 1 syslog adm 331704 Dec 9 06:45 mail.log.2.gz -rw-r----- 1 syslog adm 235751 Dec 2 06:40 mail.log.3.gz Is there something that is misconfigured? I tried restarting postfix and it still wrote to mail.log.1 afterwards (same with a postix stop; postfix start, too).

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  • Query specific logs from event log using nxlog

    - by user170899
    Below is my nxlog configuration define ROOT C:\Program Files (x86)\nxlog Moduledir %ROOT%\modules CacheDir %ROOT%\data Pidfile %ROOT%\data\nxlog.pid SpoolDir %ROOT%\data LogFile %ROOT%\data\nxlog.log <Extension json> Module xm_json </Extension> <Input internal> Module im_internal </Input> <Input eventlog> Module im_msvistalog Query <QueryList>\ <Query Id="0">\ <Select Path="Security">*</Select>\ </Query>\ </QueryList> </Input> <Output out> Module om_tcp Host localhost Port 3515 Exec $EventReceivedTime = integer($EventReceivedTime) / 1000000; \ to_json(); </Output> <Route 1> Path eventlog, internal => out </Route> <Select Path="Security">*</Select>\ - * gets everything from the Security log, but my requirement is to get specific logs starting with EventId - 4663. How do i do this? Please help. Thanks.

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  • what service to restart for /var/log/auth.log to start

    - by Bond
    Here is a situation since the log files on my server had grown to several Gigabytes I took a backup of directory /var/log and then manually when to each subdirectory of /var/log and the files which were big in size I did cat > /var/log/file_which_is_big press 2 times enter key (basically over wrote those files with a blank space) and then Ctrl+C So basically I over wrote those files to be blank. Now when I open /var/log/auth.log I don't see any entry (which is expected also since I over wrote) but when I exit the SSH session and login again then also I do not see any entry in auth.log is there any way other than rebooting the machine to make sure I keep getting the entries in /var/log/auth.log I am not sure which service writes in this file. This is a Ubuntu 10.04 server.

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  • SQL SERVER – Transaction Log Full – Transaction Log Larger than Data File – Notes from Fields #001

    - by Pinal Dave
    I am very excited to announce a new series on this blog – Notes from Fields. I have been blogging for almost 7 years on this blog and it has been a wonderful experience. Though, I have extensive experience with SQL and Databases, it is always a good idea that we consult experts for their advice and opinion. Following the same thought process, I have started this new series of Notes from Fields. In this series we will have notes from various experts in the database world. My friends at Linchpin People have graciously decided to support me in my new initiation.  Linchpin People are database coaches and wellness experts for a data driven world. In this very first episode of the Notes from Fields series database expert Tim Radney (partner at Linchpin People) explains a very common issue DBA and Developer faces in their career, when database logs fills up your hard-drive or your database log is larger than your data file. Read the experience of Tim in his own words. As a consultant, I encounter a number of common issues with clients.  One of the more common things I encounter is finding a user database in the FULL recovery model that does not make a regular transaction log backups or ever had a transaction log backup. When I find this, usually the transaction log is several times larger than the data file. Finding this issue is very significant to me in that it allows to me to discuss service level agreements with the client. I get to ask questions such as, are nightly full backups sufficient or do they need point in time recovery.  This conversation has now signed with the customer and gets them to thinking about their disaster recovery and high availability solutions. This issue is also very prominent on SQL Server forums and usually has the title of “Help, my transaction log has filled up my disk” or “Help, my transaction log is many times the size of my database”. In cases where the client only needs the previous full nights backup, I am able to change the recovery model to SIMPLE and shrink the transaction log using DBCC SHRINKFILE (2,1) or by specifying the transaction log file name by using DBCC SHRINKFILE (file_name, target_size). When the client needs point in time recovery then in most cases I will still end up switching the client to the SIMPLE recovery model to truncate the transaction log followed by a full backup. I will then schedule a SQL Agent job to make the regular transaction log backups with an interval determined by the client to meet their service level agreements. It should also be noted that typically when I find an overgrown transaction log the virtual log file count is also out of control. I clean up will always take that into account as well.  That is a subject for a future blog post. If your SQL Server is facing any issue we can Fix Your SQL Server. Additional reading: Monitoring SQL Server Database Transaction Log Space Growth – DBCC SQLPERF(logspace)  SQL SERVER – How to Stop Growing Log File Too Big Shrinking Truncate Log File – Log Full Reference: Pinal Dave (http://blog.sqlauthority.com)Filed under: PostADay, SQL, SQL Authority, SQL Backup and Restore, SQL Query, SQL Server, SQL Tips and Tricks, T SQL

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  • ???Flashback Log???????Redo Log?

    - by Liu Maclean(???)
    ????????????????????redo log?   RVWR( Recovery Writer)?3s??flashback generate buffer??block before image?????????? ?????block change???RVWR??block before image ?flashback log? ?????????,Oracle???????????before image????????,????????flashback database logs?????   ???????????,????? ??????????????????,???????????before image?????shared pool??flashback log buffer?,RVWR??????flashback log buffer??????????? ?DBWR???????????????,DBWR?????buffer header??FBA(Flashback Byte Address)?flashback log buffer?????????? ???? ?????? ??? ????????????? , RVWR???????????(flashback markers)?flashback database logs?? ????(flashback markers)?????????????Oracle??flashback ??????????  ??????????, Oracle ??????(flashback markers)????????????flashback database log???????????block image; ??Oracle ???????(forward recovery)?????????????????SCN?????? flashback markers for example: **** Record at fba: (lno 1 thr 1 seq 1 bno 4 bof 8184) **** RECORD HEADER: Type: 3 (Skip) Size: 8132 RECORD DATA (Skip): **** Record at fba: (lno 1 thr 1 seq 1 bno 4 bof 52) **** RECORD HEADER: Type: 7 (Begin Crash Recovery Record) Size: 36 RECORD DATA (Begin Crash Recovery Record): Previous logical record fba: (lno 1 thr 1 seq 1 bno 3 bof 316) Record scn: 0x0000.00000000 [0.0] **** Record at fba: (lno 1 thr 1 seq 1 bno 3 bof 8184) **** RECORD HEADER: Type: 3 (Skip) Size: 7868 RECORD DATA (Skip): **** Record at fba: (lno 1 thr 1 seq 1 bno 3 bof 316) **** RECORD HEADER: Type: 2 (Marker) Size: 300 RECORD DATA (Marker): Previous logical record fba: (lno 0 thr 0 seq 0 bno 0 bof 0) Record scn: 0x0000.00000000 [0.0] Marker scn: 0x0000.0060e024 [0.6348836] 06/13/2012 15:56:35 Flag 0x0 Flashback threads: 1, Enabled redo threads 1 Recovery Start Checkpoint: scn: 0x0000.0060e024 [0.6348836] 06/13/2012 15:56:12 thread:1 rba:(0x80.180.10) Flashback thread Markers: Thread:1 status:0 fba: (lno 1 thr 1 seq 1 bno 2 bof 8184) Redo Thread Checkpoint Info: Thread:1 rba:(0x80.180.10) **** Record at fba: (lno 1 thr 1 seq 1 bno 2 bof 8184) **** RECORD HEADER: Type: 3 (Skip) Size: 8168 RECORD DATA (Skip): End-Of-Thread reached ????????????????block change ????before image????????flashback log?? ?????block change???flashback log record ????????? redo log???!????flashback log ???????before image ? redo log??? change vector ?  Oracle?????????????????????????????????????,??????I/O??????????????: ??hot block??,Oracle???????????block image?????; Oracle ?????????(flashback barriers)???????????????,flashback barriers???????(???15??),??????????(flashback barriers)????(flashback markers)????????? ????, ??????change?????, ???????????????????????????, ?15????????????????????flashback log????????before image?????????????,?????????????????????,?????????????? ????????,??????????????(flashback barriers), flashback barriers???????,?????15????? ?????flashback barriers????????(flashback markers)???????????????,???????????????????(????barriers?????)??????block image ,????????????????????????????????? ??????????flashback log????redo log????! ????,????????????????, ?????????? SQL> select * from v$version; BANNER -------------------------------------------------------------------------------- Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production PL/SQL Release 11.2.0.3.0 - Production CORE 11.2.0.3.0 Production TNS for Linux: Version 11.2.0.3.0 - Production NLSRTL Version 11.2.0.3.0 - Production SQL> select * from global_name; GLOBAL_NAME -------------------------------------------------------------------------------- www.oracledatabase12g.com SQL> create table flash_maclean (t1 varchar2(200)) tablespace users; Table created. SQL> insert into flash_maclean values('MACLEAN LOVE HANNA'); 1 row created. SQL> commit; Commit complete. SQL> startup force; ORACLE instance started. Total System Global Area 939495424 bytes Fixed Size 2233960 bytes Variable Size 713034136 bytes Database Buffers 218103808 bytes Redo Buffers 6123520 bytes Database mounted. Database opened. SQL> update flash_maclean set t1='HANNA LOVE MACLEAN'; 1 row updated. commit; Commit complete. SQL> alter system checkpoint; System altered. SQL> select dbms_rowid.rowid_block_number(rowid),dbms_rowid.rowid_relative_fno(rowid) from flash_maclean; DBMS_ROWID.ROWID_BLOCK_NUMBER(ROWID) DBMS_ROWID.ROWID_RELATIVE_FNO(ROWID) ------------------------------------ ------------------------------------ 140431 4 datafile 4 block 140431 ??RDBA rdba: 0x0102248f (4/140431) SQL> ! ps -ef|grep rvwr|grep -v grep oracle 26695 1 0 15:56 ? 00:00:00 ora_rvwr_G11R23 SQL> oradebug setospid 26695 Oracle pid: 20, Unix process pid: 26695, image: [email protected] (RVWR) SQL> ORADEBUG DUMP FBTAIL 1; Statement processed. To dump the last 2000 flashback records , ??ORADEBUG DUMP FBTAIL 1????????2000?????? SQL> oradebug tracefile_name /s01/orabase/diag/rdbms/g11r23/G11R23/trace/G11R23_rvwr_26695.trc ? TRACE?????????block? before image **** Record at fba: (lno 1 thr 1 seq 1 bno 55 bof 2564) **** RECORD HEADER: Type: 1 (Block Image) Size: 28 RECORD DATA (Block Image): file#: 4 rdba: 0x0102248f Next scn: 0x0000.00000000 [0.0] Flag: 0x0 Block Size: 8192 BLOCK IMAGE: buffer rdba: 0x0102248f scn: 0x0000.00609044 seq: 0x01 flg: 0x06 tail: 0x90440601 frmt: 0x02 chkval: 0xc626 type: 0x06=trans data Hex dump of block: st=0, typ_found=1 Dump of memory from 0x00002B1D94183C00 to 0x00002B1D94185C00 2B1D94183C00 0000A206 0102248F 00609044 06010000 [.....$..D.`.....] 2B1D94183C10 0000C626 00000001 00014AD4 0060903A [&........J..:.`.] 2B1D94183C20 00000000 00320002 01022488 00090006 [......2..$......] 2B1D94183C30 00000CC8 00C00340 000D0542 00008000 [[email protected].......] 2B1D94183C40 006040BC 000F000A 00000920 00C002E4 [.@`..... .......] 2B1D94183C50 0017048F 00002001 00609044 00000000 [..... ..D.`.....] 2B1D94183C60 00000000 00010100 0014FFFF 1F6E1F77 [............w.n.] 2B1D94183C70 00001F6E 1F770001 00000000 00000000 [n.....w.........] 2B1D94183C80 00000000 00000000 00000000 00000000 [................] Repeat 500 times 2B1D94185BD0 00000000 00000000 2C000000 4D120102 [...........,...M] 2B1D94185BE0 454C4341 4C204E41 2045564F 4E4E4148 [ACLEAN LOVE HANN] 2B1D94185BF0 01002C41 43414D07 4E41454C 90440601 [A,...MACLEAN..D.] Block header dump: 0x0102248f Object id on Block? Y seg/obj: 0x14ad4 csc: 0x00.60903a itc: 2 flg: E typ: 1 - DATA brn: 0 bdba: 0x1022488 ver: 0x01 opc: 0 inc: 0 exflg: 0 Itl Xid Uba Flag Lck Scn/Fsc 0x01 0x0006.009.00000cc8 0x00c00340.0542.0d C--- 0 scn 0x0000.006040bc 0x02 0x000a.00f.00000920 0x00c002e4.048f.17 --U- 1 fsc 0x0000.00609044 bdba: 0x0102248f data_block_dump,data header at 0x2b1d94183c64 =============== tsiz: 0x1f98 hsiz: 0x14 pbl: 0x2b1d94183c64 76543210 flag=-------- ntab=1 nrow=1 frre=-1 fsbo=0x14 fseo=0x1f77 avsp=0x1f6e tosp=0x1f6e 0xe:pti[0] nrow=1 offs=0 0x12:pri[0] offs=0x1f77 block_row_dump: tab 0, row 0, @0x1f77 tl: 22 fb: --H-FL-- lb: 0x2 cc: 1 col 0: [18] 4d 41 43 4c 45 41 4e 20 4c 4f 56 45 20 48 41 4e 4e 41 end_of_block_dump SQL> select dump('MACLEAN LOVE HANNA',16) from dual; DUMP('MACLEANLOVEHANNA',16) -------------------------------------------------------------------- Typ=96 Len=18: 4d,41,43,4c,45,41,4e,20,4c,4f,56,45,20,48,41,4e,4e,41 ???????????????????????,??flashback log??before image????????? create table flash_maclean1 (t1 int) tablespace users; SQL> select vs.name, ms.value 2 from v$mystat ms, v$sysstat vs 3 where vs.statistic# = ms.statistic# 4 and vs.name in ('redo size','db block changes'); NAME VALUE ---------------------------------------------------------------- ---------- db block changes 0 redo size 0 SQL> select name,value from v$sysstat where name like 'flashback log%'; NAME VALUE ---------------------------------------------------------------- ---------- flashback log writes 49 flashback log write bytes 9306112 SQL> begin 2 for i in 1..5000 loop 3 update flash_maclean1 set t1=t1+1; 4 commit; 5 end loop; 6 end; 7 / PL/SQL procedure successfully completed. SQL> select vs.name, ms.value 2 from v$mystat ms, v$sysstat vs 3 where vs.statistic# = ms.statistic# 4 and vs.name in ('redo size','db block changes'); NAME VALUE ---------------------------------------------------------------- ---------- db block changes 20006 redo size 3071288 SQL> select name,value from v$sysstat where name like 'flashback log%'; NAME VALUE ---------------------------------------------------------------- ---------- flashback log writes 52 flashback log write bytes 10338304 ??????????? ??hot block,???20006 ?block changes???? ??? 3000k ?redo log ? ??1000k? flashback log ?

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  • SQL Server Log File Size Management

    - by Rob
    I have all my databases in full recovery and have the log backups happening every 15 minutes so my log files are usually pretty small. question is if there is a nightly operation that causes lots of transactions to happen and causes my log files to grow, should i shrink them back down afterward? Does having a gigantic log file negatively affect the database performance? Disk space isn't an issue at this time.

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  • Logrotate not doing any rotation

    - by blizz
    I just set up LogRotate on my RHEL6 server so that it rotates my custom Apache log files. However, it doesn't do anything when i try manually running it. I expect it to rotate the log files "access.log" and "err.log". They have been there for a few days and need to be rotated. Here is the output: [root@pc1 httpd]# logrotate -d -f /etc/logrotate.d/apache reading config file /etc/logrotate.d/apache reading config info for /var/log/httpd/*log /var/www/html/NSLogs/access.log /var/www/html/NSErrorLogs/err.log Handling 1 logs rotating pattern: /var/log/httpd/*log /var/www/html/NSLogs/access.log /var/www/html/NSErrorLogs/err.log forced from command line (no old logs will be kept) empty log files are rotated, old logs are removed considering log /var/log/httpd/access_log log needs rotating considering log /var/log/httpd/error_log log needs rotating considering log /var/www/html/NSLogs/access.log log needs rotating considering log /var/www/html/NSErrorLogs/err.log log needs rotating rotating log /var/log/httpd/access_log, log->rotateCount is 0 dateext suffix '-20131023' glob pattern '-[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]' glob finding old rotated logs failed fscreate context set to unconfined_u:object_r:httpd_log_t:s0 renaming /var/log/httpd/access_log to /var/log/httpd/access_log-20131023 disposeName will be /var/log/httpd/access_log-20131023.gz running postrotate script running script with arg /var/log/httpd/access_log: " /usr/bin/killall -HUP httpd " compressing log with: /bin/gzip removing old log /var/log/httpd/access_log-20131023.gz error: error opening /var/log/httpd/access_log-20131023.gz: No such file or directory rotating log /var/log/httpd/error_log, log->rotateCount is 0 dateext suffix '-20131023' glob pattern '-[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]' glob finding old rotated logs failed fscreate context set to unconfined_u:object_r:httpd_log_t:s0 renaming /var/log/httpd/error_log to /var/log/httpd/error_log-20131023 disposeName will be /var/log/httpd/error_log-20131023.gz running postrotate script running script with arg /var/log/httpd/error_log: " /usr/bin/killall -HUP httpd " compressing log with: /bin/gzip removing old log /var/log/httpd/error_log-20131023.gz error: error opening /var/log/httpd/error_log-20131023.gz: No such file or directory rotating log /var/www/html/NSLogs/access.log, log->rotateCount is 0 dateext suffix '-20131023' glob pattern '-[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]' glob finding old rotated logs failed fscreate context set to unconfined_u:object_r:httpd_sys_rw_content_t:s0 renaming /var/www/html/NSLogs/access.log to /var/www/html/NSLogs/access.log-20131023 disposeName will be /var/www/html/NSLogs/access.log-20131023.gz running postrotate script running script with arg /var/www/html/NSLogs/access.log: " /usr/bin/killall -HUP httpd " compressing log with: /bin/gzip removing old log /var/www/html/NSLogs/access.log-20131023.gz error: error opening /var/www/html/NSLogs/access.log-20131023.gz: No such file or directory rotating log /var/www/html/NSErrorLogs/err.log, log->rotateCount is 0 dateext suffix '-20131023' glob pattern '-[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]' glob finding old rotated logs failed fscreate context set to unconfined_u:object_r:httpd_sys_rw_content_t:s0 renaming /var/www/html/NSErrorLogs/err.log to /var/www/html/NSErrorLogs/err.log-20131023 disposeName will be /var/www/html/NSErrorLogs/err.log-20131023.gz running postrotate script running script with arg /var/www/html/NSErrorLogs/err.log: " /usr/bin/killall -HUP httpd " compressing log with: /bin/gzip removing old log /var/www/html/NSErrorLogs/err.log-20131023.gz error: error opening /var/www/html/NSErrorLogs/err.log-20131023.gz: No such file or directory

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  • White Paper on Analysis Services Tabular Large-scale Solution #ssas #tabular

    - by Marco Russo (SQLBI)
    Since the first beta of Analysis Services 2012, I worked with many companies designing and implementing solutions based on Analysis Services Tabular. I am glad that Microsoft published a white paper about a case-study using one of these scenarios: An Analysis Services Case Study: Using Tabular Models in a Large-scale Commercial Solution. Alberto Ferrari is the author of the white paper and many people contributed to it. The final result is a very technical document based on a case study, which provides a level of detail that I don’t see often in other case studies (which are usually more marketing-oriented). This white paper has the following structure: Requirements (data model, capacity planning, client tool) Options considered (SQL Server Columnstore Indexes, SSAS Multidimensional, SSAS Tabular) Data Model optimizations (memory compression, query performance, scalability) Partitioning and Processing strategy for near real-time latency Hardware selection (NUMA analysis, Azure VM tests) Scalability tests (estimation of maximum users per node) If you are in charge of evaluating Tabular as analytical engine, or if you have to design your solution based on Tabular, this white paper is a must read. But if you just want to increase your knowledge of Analysis Services, you will find a lot of useful technical information. That said, my favorite quote of the document is the following one, funny but true: […] After several trials, the clear winner was a video gaming machine that one guy on the team used at home. That computer outperformed any available server, running twice as fast as the server-class machines we had in house. At that point, it was clear that the criteria for choosing the server would have to be expanded a bit, simply because it would have been impossible to convince the boss to build a cluster of gaming machines and trust it to serve our customers.  But, honestly, if a business has the flexibility to buy gaming machines (assuming the machines can handle capacity) – do this. Owen Graupman, inContact I want to write a longer discussion about how companies are adopting Tabular in scenarios where it is the hidden engine of a more complex solution (and not the classical “BI system”), because it is more frequent than you might expect (and has several advantages over many alternative approaches).

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  • Basket Analysis with #dax in #powerpivot and #ssas #tabular

    - by Marco Russo (SQLBI)
    A few days ago I published a new article on DAX Patterns web site describing how to implement Basket Analysis in DAX. This topic is a very classical one and is also covered in the many-to-many revolution white paper. It has been also discussed in several blog posts, listed here in historical order: Simple Basket Analysis in DAX by Chris Webb PowerPivot, basket analysis and the hidden many to many by Alberto Ferrari Applied Basket Analysis in Power Pivot using DAX by Gerhard Brueckl As usual, in DAX Patterns we try to present the required DAX formulas in a way that is easy to adapt to specific models. We also try to show a good implementation from a performance point of view. Further optimizations are always possible in DAX. However, in order to keep the model simple to adapt in different scenarios, we avoid presenting optimizations that would require particular assumptions or restrictions on the data model. I hope you will find the Basket Analysis pattern useful. Even if you do not need it today, reading the DAX formula is a good exercise to check your knowledge of evaluation contexts in DAX. For example, describing how does it work the following expression is not a trivial task! [Orders with Both Products] := CALCULATE (     DISTINCTCOUNT ( Sales[SalesOrderNumber] ),     CALCULATETABLE (         SUMMARIZE ( Sales, Sales[SalesOrderNumber] ),         ALL ( Product ),         USERELATIONSHIP ( Sales[ProductCode], 'Filter Product'[Filter ProductCode] )     ) ) The good news is that you can use the patterns even if you do not really understand all the details of the DAX formulas you are using! Any feedback on this new pattern is very welcome.

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  • Automate Log Parser to Find Your Data Faster

    - by The Official Microsoft IIS Site
    Microsoft’s Log Parser is a really powerful tool for searching log files. With just a few simple SQL commands you can pull more data than you ever imagined out of your logs. It can be used to read web site log files, csv files, and even Windows event logs. Log Parser isn’t intended to compete with stats products such as Webtrends Log Analyzer or SmarterStats by Smartertools.com which I feel is the best on the market. I primarily use Log Parser for troubleshooting problems with a site...(read more)

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  • ORA-03113 in code. In addition, TNS-12535 and ORA-03137 in alert file

    - by user1348107
    I've got an exception that contain ORA-03113: (SiPPSS.GetPrintWorkDirectDetail) - ERR:ORA-03113: end-of-file on communication channel Process ID: 7448 Session ID: 30 Serial number: 9802 ?????:12110937 ????:T855 Oracle.DataAccess.Client.OracleException ORA-03113: end-of-file on communication channel Process ID: 7448 Session ID: 30 Serial number: 9802 ?? Oracle.DataAccess.Client.OracleException.HandleErrorHelper(Int32 errCode, OracleConnection conn, IntPtr opsErrCtx, OpoSqlValCtx* pOpoSqlValCtx, Object src, String procedure, Boolean bCheck) ?? Oracle.DataAccess.Client.OracleException.HandleError(Int32 errCode, OracleConnection conn, String procedure, IntPtr opsErrCtx, OpoSqlValCtx* pOpoSqlValCtx, Object src, Boolean bCheck) ?? Oracle.DataAccess.Client.OracleCommand.ExecuteReader(Boolean requery, Boolean fillRequest, CommandBehavior behavior) ?? Oracle.DataAccess.Client.OracleDataAdapter.Fill(DataTable[] dataTables, Int32 startRecord, Int32 maxRecords, IDbCommand command, CommandBehavior behavior) ?? System.Data.Common.DbDataAdapter.Fill(DataTable dataTable) ?? SiPPSS.VSireiMeisaiDsTableAdapters.V_SIREI_MEISAITableAdapter.FillByRunningNoAndProcNo(V_SIREI_MEISAIDataTable dataTable, String RUNNING_NO, String PROC_NO) ?? C:\SVM\trunk\SiPPSSServer\Server\Dao\View\VSireiMeisaiDs.Designer.vb:? 386 ?? SiPPSS.GetPrintWorkDirectDetail.Execute(BLogicParam param) ?? C:\SVM\trunk\SiPPSSServer\Server\BLogic\Screen\Printing\Rprt0701\GetPrintWorkDirectDetail.vb:? 105 In this case, the oracle alert log as beblow: Fatal NI connect error 12170. VERSION INFORMATION: TNS for 64-bit Windows: Version 11.2.0.1.0 - Production Oracle Bequeath NT Protocol Adapter for 64-bit Windows: Version 11.2.0.1.0 - Production Windows NT TCP/IP NT Protocol Adapter for 64-bit Windows: Version 11.2.0.1.0 - Production Time: 01-11?-2012 13:50:45 Tracing not turned on. Tns error struct: ns main err code: 12535 TNS-12535: TNS: ??????·???????? ns secondary err code: 12560 nt main err code: 505 TNS-00505: ??????????? nt secondary err code: 60 nt OS err code: 0 Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=10.41.102.53)(PORT=1794)) Thu Nov 01 13:54:17 2012 Thread 1 cannot allocate new log, sequence 1880 Private strand flush not complete Current log# 1 seq# 1879 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 advanced to log sequence 1880 (LGWR switch) Current log# 2 seq# 1880 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thu Nov 01 13:54:21 2012 Archived Log entry 1118 added for thread 1 sequence 1879 ID 0xe48db805 dest 1: Thu Nov 01 14:40:12 2012 Thread 1 cannot allocate new log, sequence 1881 Private strand flush not complete Current log# 2 seq# 1880 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thread 1 advanced to log sequence 1881 (LGWR switch) Current log# 3 seq# 1881 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thu Nov 01 14:40:16 2012 Archived Log entry 1119 added for thread 1 sequence 1880 ID 0xe48db805 dest 1: Thu Nov 01 15:27:42 2012 Thread 1 cannot allocate new log, sequence 1882 Private strand flush not complete Current log# 3 seq# 1881 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thread 1 advanced to log sequence 1882 (LGWR switch) Current log# 1 seq# 1882 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thu Nov 01 15:27:46 2012 Archived Log entry 1120 added for thread 1 sequence 1881 ID 0xe48db805 dest 1: Thu Nov 01 16:23:48 2012 Thread 1 cannot allocate new log, sequence 1883 Private strand flush not complete Current log# 1 seq# 1882 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 advanced to log sequence 1883 (LGWR switch) Current log# 2 seq# 1883 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thu Nov 01 16:23:52 2012 Archived Log entry 1121 added for thread 1 sequence 1882 ID 0xe48db805 dest 1: Thu Nov 01 17:05:50 2012 Thread 1 cannot allocate new log, sequence 1884 Private strand flush not complete Current log# 2 seq# 1883 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thread 1 advanced to log sequence 1884 (LGWR switch) Current log# 3 seq# 1884 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thu Nov 01 17:05:55 2012 Archived Log entry 1122 added for thread 1 sequence 1883 ID 0xe48db805 dest 1: Thu Nov 01 17:26:52 2012 Fatal NI connect error 12170. VERSION INFORMATION: TNS for 64-bit Windows: Version 11.2.0.1.0 - Production Oracle Bequeath NT Protocol Adapter for 64-bit Windows: Version 11.2.0.1.0 - Production Windows NT TCP/IP NT Protocol Adapter for 64-bit Windows: Version 11.2.0.1.0 - Production Time: 01-11?-2012 17:26:52 Tracing not turned on. Tns error struct: ns main err code: 12535 TNS-12535: TNS: ??????·???????? ns secondary err code: 12560 nt main err code: 505 TNS-00505: ??????????? nt secondary err code: 60 nt OS err code: 0 Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=10.41.102.62)(PORT=1286)) Thu Nov 01 17:27:16 2012 Fatal NI connect error 12170. VERSION INFORMATION: TNS for 64-bit Windows: Version 11.2.0.1.0 - Production Oracle Bequeath NT Protocol Adapter for 64-bit Windows: Version 11.2.0.1.0 - Production Windows NT TCP/IP NT Protocol Adapter for 64-bit Windows: Version 11.2.0.1.0 - Production Time: 01-11?-2012 17:27:16 Tracing not turned on. Tns error struct: ns main err code: 12535 TNS-12535: TNS: ??????·???????? ns secondary err code: 12560 nt main err code: 505 TNS-00505: ??????????? nt secondary err code: 60 nt OS err code: 0 Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=10.41.102.62)(PORT=1285)) Thu Nov 01 18:08:39 2012 Thread 1 advanced to log sequence 1885 (LGWR switch) Current log# 1 seq# 1885 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thu Nov 01 18:08:40 2012 Archived Log entry 1123 added for thread 1 sequence 1884 ID 0xe48db805 dest 1: Thu Nov 01 19:33:21 2012 Thread 1 cannot allocate new log, sequence 1886 Private strand flush not complete Current log# 1 seq# 1885 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 advanced to log sequence 1886 (LGWR switch) Current log# 2 seq# 1886 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thu Nov 01 19:33:25 2012 Archived Log entry 1124 added for thread 1 sequence 1885 ID 0xe48db805 dest 1: Thu Nov 01 20:32:25 2012 Thread 1 cannot allocate new log, sequence 1887 Private strand flush not complete Current log# 2 seq# 1886 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thread 1 advanced to log sequence 1887 (LGWR switch) Current log# 3 seq# 1887 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thu Nov 01 20:32:29 2012 Archived Log entry 1125 added for thread 1 sequence 1886 ID 0xe48db805 dest 1: Thu Nov 01 21:13:07 2012 Thread 1 advanced to log sequence 1888 (LGWR switch) Current log# 1 seq# 1888 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thu Nov 01 21:13:08 2012 Archived Log entry 1126 added for thread 1 sequence 1887 ID 0xe48db805 dest 1: Thu Nov 01 22:00:00 2012 Setting Resource Manager plan SCHEDULER[0x3006]:DEFAULT_MAINTENANCE_PLAN via scheduler window Setting Resource Manager plan DEFAULT_MAINTENANCE_PLAN via parameter Thu Nov 01 22:00:00 2012 Starting background process VKRM Thu Nov 01 22:00:00 2012 VKRM started with pid=32, OS id=4048 Thu Nov 01 22:00:59 2012 Thread 1 cannot allocate new log, sequence 1889 Private strand flush not complete Current log# 1 seq# 1888 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 advanced to log sequence 1889 (LGWR switch) Current log# 2 seq# 1889 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thu Nov 01 22:01:03 2012 Archived Log entry 1127 added for thread 1 sequence 1888 ID 0xe48db805 dest 1: Thu Nov 01 22:32:36 2012 Thread 1 advanced to log sequence 1890 (LGWR switch) Current log# 3 seq# 1890 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thu Nov 01 22:32:37 2012 Archived Log entry 1128 added for thread 1 sequence 1889 ID 0xe48db805 dest 1: Thu Nov 01 22:33:18 2012 Errors in file d:\oracle\diag\rdbms\siporex\siporex\trace\siporex_ora_11884.trc (incident=101313): ORA-03137: TTC protocol internal error : [12333] [8] [49] [50] [] [] [] [] Incident details in: d:\oracle\diag\rdbms\siporex\siporex\incident\incdir_101313\siporex_ora_11884_i101313.trc Thu Nov 01 22:33:21 2012 Trace dumping is performing id=[cdmp_20121101223321] Thu Nov 01 22:40:43 2012 Thread 1 cannot allocate new log, sequence 1891 Private strand flush not complete Current log# 3 seq# 1890 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thread 1 advanced to log sequence 1891 (LGWR switch) Current log# 1 seq# 1891 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thu Nov 01 22:40:47 2012 Archived Log entry 1129 added for thread 1 sequence 1890 ID 0xe48db805 dest 1: Thu Nov 01 23:47:30 2012 Thread 1 cannot allocate new log, sequence 1892 Private strand flush not complete Current log# 1 seq# 1891 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 advanced to log sequence 1892 (LGWR switch) Current log# 2 seq# 1892 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thu Nov 01 23:47:34 2012 Archived Log entry 1130 added for thread 1 sequence 1891 ID 0xe48db805 dest 1: Fri Nov 02 00:49:31 2012 Thread 1 cannot allocate new log, sequence 1893 Private strand flush not complete Current log# 2 seq# 1892 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thread 1 advanced to log sequence 1893 (LGWR switch) Current log# 3 seq# 1893 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Fri Nov 02 00:49:35 2012 Archived Log entry 1131 added for thread 1 sequence 1892 ID 0xe48db805 dest 1: Fri Nov 02 01:43:12 2012 Thread 1 cannot allocate new log, sequence 1894 Private strand flush not complete Current log# 3 seq# 1893 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thread 1 advanced to log sequence 1894 (LGWR switch) Current log# 1 seq# 1894 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Fri Nov 02 01:43:17 2012 Archived Log entry 1132 added for thread 1 sequence 1893 ID 0xe48db805 dest 1: Fri Nov 02 01:52:51 2012 Errors in file d:\oracle\diag\rdbms\siporex\siporex\trace\siporex_ora_6124.trc (incident=101273): ORA-03137: TTC protocol internal error : [12333] [4] [80] [82] [] [] [] [] Incident details in: d:\oracle\diag\rdbms\siporex\siporex\incident\incdir_101273\siporex_ora_6124_i101273.trc Fri Nov 02 01:52:54 2012 Trace dumping is performing id=[cdmp_20121102015254] Fri Nov 02 02:00:00 2012 Clearing Resource Manager plan via parameter Fri Nov 02 02:43:37 2012 Thread 1 cannot allocate new log, sequence 1895 Private strand flush not complete Current log# 1 seq# 1894 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 advanced to log sequence 1895 (LGWR switch) Current log# 2 seq# 1895 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Fri Nov 02 02:43:41 2012 Archived Log entry 1133 added for thread 1 sequence 1894 ID 0xe48db805 dest 1: Fri Nov 02 04:46:18 2012 Thread 1 cannot allocate new log, sequence 1896 Private strand flush not complete Current log# 2 seq# 1895 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thread 1 advanced to log sequence 1896 (LGWR switch) Current log# 3 seq# 1896 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Fri Nov 02 04:46:22 2012 Archived Log entry 1134 added for thread 1 sequence 1895 ID 0xe48db805 dest 1: Fri Nov 02 04:51:41 2012 Errors in file d:\oracle\diag\rdbms\siporex\siporex\trace\siporex_ora_4048.trc (incident=101425): ORA-03137: TTC protocol internal error : [12333] [4] [67] [85] [] [] [] [] Incident details in: d:\oracle\diag\rdbms\siporex\siporex\incident\incdir_101425\siporex_ora_4048_i101425.trc Fri Nov 02 04:51:44 2012 Trace dumping is performing id=[cdmp_20121102045144] Fri Nov 02 05:54:44 2012 Thread 1 cannot allocate new log, sequence 1897 Private strand flush not complete Current log# 3 seq# 1896 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thread 1 advanced to log sequence 1897 (LGWR switch) Current log# 1 seq# 1897 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Fri Nov 02 05:54:48 2012 Archived Log entry 1135 added for thread 1 sequence 1896 ID 0xe48db805 dest 1: Fri Nov 02 07:00:34 2012 Thread 1 cannot allocate new log, sequence 1898 Private strand flush not complete Current log# 1 seq# 1897 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 advanced to log sequence 1898 (LGWR switch) Current log# 2 seq# 1898 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Fri Nov 02 07:00:38 2012 Archived Log entry 1136 added for thread 1 sequence 1897 ID 0xe48db805 dest 1: Fri Nov 02 08:32:41 2012 Thread 1 cannot allocate new log, sequence 1899 Private strand flush not complete Current log# 2 seq# 1898 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thread 1 advanced to log sequence 1899 (LGWR switch) Current log# 3 seq# 1899 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Fri Nov 02 08:32:45 2012 Archived Log entry 1137 added for thread 1 sequence 1898 ID 0xe48db805 dest 1: Fri Nov 02 09:48:57 2012 Thread 1 advanced to log sequence 1900 (LGWR switch) Current log# 1 seq# 1900 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Fri Nov 02 09:48:58 2012 Archived Log entry 1138 added for thread 1 sequence 1899 ID 0xe48db805 dest 1: Fri Nov 02 10:18:15 2012 Thread 1 cannot allocate new log, sequence 1901 Private strand flush not complete Current log# 1 seq# 1900 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 advanced to log sequence 1901 (LGWR switch) Current log# 2 seq# 1901 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Fri Nov 02 10:18:19 2012 Archived Log entry 1139 added for thread 1 sequence 1900 ID 0xe48db805 dest 1: Fri Nov 02 10:22:58 2012 Thread 1 cannot allocate new log, sequence 1902 Private strand flush not complete Current log# 2 seq# 1901 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thread 1 advanced to log sequence 1902 (LGWR switch) Current log# 3 seq# 1902 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Fri Nov 02 10:23:02 2012 Archived Log entry 1140 added for thread 1 sequence 1901 ID 0xe48db805 dest 1: Fri Nov 02 10:27:38 2012 Thread 1 cannot allocate new log, sequence 1903 Checkpoint not complete Current log# 3 seq# 1902 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thread 1 cannot allocate new log, sequence 1903 Private strand flush not complete Current log# 3 seq# 1902 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thread 1 advanced to log sequence 1903 (LGWR switch) Current log# 1 seq# 1903 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Fri Nov 02 10:27:45 2012 Archived Log entry 1141 added for thread 1 sequence 1902 ID 0xe48db805 dest 1: Fri Nov 02 10:32:27 2012 Thread 1 cannot allocate new log, sequence 1904 Checkpoint not complete Current log# 1 seq# 1903 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 cannot allocate new log, sequence 1904 Private strand flush not complete Current log# 1 seq# 1903 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 advanced to log sequence 1904 (LGWR switch) Current log# 2 seq# 1904 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Fri Nov 02 10:32:34 2012 Archived Log entry 1142 added for thread 1 sequence 1903 ID 0xe48db805 dest 1: Fri Nov 02 10:35:42 2012 Errors in file d:\oracle\diag\rdbms\siporex\siporex\trace\siporex_ora_15856.trc (incident=101353): ORA-03137: TTC protocol internal error : [12333] [8] [49] [50] [] [] [] [] Incident details in: d:\oracle\diag\rdbms\siporex\siporex\incident\incdir_101353\siporex_ora_15856_i101353.trc Fri Nov 02 10:35:44 2012 Trace dumping is performing id=[cdmp_20121102103544] I don't know main reason of this issue as well as how to fixing it. Please help me.

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  • T-SQL Tuesday #31: Paradox of the Sawtooth Log

    - by merrillaldrich
    Today’s T-SQL Tuesday, hosted by Aaron Nelson ( @sqlvariant | sqlvariant.com ) has the theme Logging . I was a little pressed for time today to pull this post together, so this will be short and sweet. For a long time, I wondered why and how a database in Full Recovery Mode, which you’d expect to have an ever-growing log -- as all changes are written to the log file -- could in fact have a log usage pattern that looks like this: This graph shows the Percent Log Used (bold, red) and the Log File(s)...(read more)

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  • Log & monitor mysql databases on servers

    - by user3215
    How MySQL databases logged and monitored on ubuntu servers in real time?. I checked /var/log/mysql.log and found it empty. EDIT 1: The log was not enabled in the mysql configuration file. Now it logs and I could see the logs in the file /var/log/mysql/mysql.log But this could not be sufficient to gather additional information about the database logs. Is there any other way or any popular open source tool?

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  • Log & monitor mysql databases on servers

    - by user3215
    How MySQL databases logged and monitored on ubuntu servers in real time?. I checked /var/log/mysql.log and found it empty. EDIT 1: The log was not enabled in the mysql configuration file. Now it logs and I could see the logs in the file /var/log/mysql/mysql.log But this could not be sufficient to gather additional information about the database logs. Is there any other way or any popular open source tool?

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  • SQL Server transaction log backups,

    - by krimerd
    Hi there, I have a question regarding the transaction log backups in sql server 2008. I am currently taking full backups once a week (Sunday) and transaction log backups daily. I put full backup in folder1 on Sunday and then on Monday I also put the 1st transaction log backup in the same folder. On tuesday, before I take the 2nd transaction log backup I move the first transaction log backup from folder1 an put it into folder2 and then I take the 2nd transaction log backup and put it in the folder1. Same thing on Wed, Thurs and so on. Basicaly in folder1 I always have the latest full backup and the latest transaction log backup while the other transaction log backups are in folder2. My questions is, when sql server is about to take, lets say 4th (Thursday) transaction log backup, does it look for the previous transac log backups (1st, 2nd, and 3rd) so that this new backup will only include the transactions from the last backup or it has some other way of knowing whether there are other transac log backups. Basically, I am asking this because all my transaction log backups seem to be about the same size and I thought that their size will depend on the amount of transactions since the last transaction log backup. Example: If you have a, lets say, full backup and then you take a transac log backup and this transac log backup is lets say 200 MB and now you immediatelly take another transac log backup, this last transac log backup should be considerably smaller than the first one because no or almost no transaction occured between these two backups, right? At least, that's what I've been assuming. What happens in my case is that this second backup is pretty much the same size as the first one and I am wondering if the reason for that is because I moved the first transac log backup to a different folder so now sql server thinks that all I have is just a full backup and it then gets all the transactions that happened since the full backup and puts it in the 2nd transac log backup. Can anyone please explain if my assumptions are right? Thanks...

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  • Log rotation with automatic *.log file discovery

    - by Mikko Ohtamaa
    I am hosting several websites which each of run their own Python process and write *.log output files, but the directory structure is not standardized. Example: -rw-r--r-- 1 plone plone 125M 2012-08-29 11:35 ./x/var/log/instance-Z2.log -rw-r--r-- 1 plone plone 19M 2012-08-29 00:07 ./zope2.9/y/log/event.log -rw-r--r-- 1 plone plone 188M 2012-08-13 00:09 ./zope2.9/y/log/Z2.log -rw-r--r-- 1 plone plone 137M 2010-11-16 09:41 ./zope2.9/y/log/event.log I'd like to make log rotate autodiscovery these log files and run a log rotation on them, as opposite to manually type in every log file to logrotate conf. Does any existing tools offer this kind of log file discovery and rotation capabilities, without manually specifying each file? If not... then just write a shell script which generates the logrotate conf?

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  • Please allow us to cancel loading of log in SQL Server Management Studio Log Viewer

    - by simonsabin
    The log viewer in management studio is really neat, however if you have large log files or are accessing a remote server over a slow connection it can take a long time to load the log records. Generally you only need the last x records, so you don’t need to load all the records. It would be great to have a cancel button to allow us to cancel the loading of the log records in SQL Server Management Studio. As an aside one of the best features in SQL 2005 was the ability to cancel your connection attempt...(read more)

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  • Kicked back to log in screen immediately after log in

    - by Zachary Alfakir
    I am running Ubuntu 12.04 LTS and whenever I try to log in using my main account, it kicks me back to log in screen. My other accounts don't do this however. I also tried to read .xsessions-errors using cat but it would output gpg-agent[7156]: failed to run the command: No such file or directory I can also log in my main account with tty. How can I fix it so I can log into my main account again?

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  • How much system and business analysis should a programmer be reasonably expected to do?

    - by Rahul
    In most places I have worked for, there were no formal System or Business Analysts and the programmers were expected to perform both the roles. One had to understand all the subsystems and their interdependencies inside out. Further, one was also supposed to have a thorough knowledge of the business logic of the applications and interact directly with the users to gather requirements, answer their queries etc. In my current job, for ex, I spend about 70% time doing system analysis and only 30% time programming. I consider myself a good programmer but struggle with developing a good understanding of the business rules of a complex application. Often, this creates a handicap because while I can write efficient algorithms and thread-safe code, I lose out to guys who may be average programmers but have a much better understanding of the business processes. So I want to know - How much business and systems knowledge should a programmer have ? - How does one go about getting this knowledge in an immensely complex software system (e.g. trading applications) with several interdependent business processes but poorly documented business rules.

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  • Log shipping and shrinking transaction logs

    - by DavidWimbush
    I just solved a problem that had me worried for a bit. I'm log shipping from three primary servers to a single secondary server, and the transaction log disk on the secondary server was getting very full. I established that several primary databases had unused space that resulted from big, one-off updates so I could shrink their logs. But would this action be log shipped and applied to the secondary database too? I thought probably not. And, more importantly, would it break log shipping? My secondary databases are in a Standby / Read Only state so I didn't think I could shrink their logs. I RTFMd, Googled, and asked on a Q&A site (not the evil one) but was none the wiser. So I was facing a monumental round of shrink, full backup, full secondary restore and re-start log shipping (which would leave us without a disaster recovery facility for the duration). Then I thought it might be worthwhile to take a non-essential database and just make absolutely sure a log shrink on the primary wouldn't ship over and occur on the secondary as well. So I did a DBCC SHRINKFILE and kept an eye on the secondary. Bingo! Log shipping didn't blink and the log on the secondary shrank too. I just love it when something turns out even better than I dared to hope. (And I guess this highlights something I need to learn about what activities are logged.)

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  • Analysis Services Tabular books #ssas #tabular

    - by Marco Russo (SQLBI)
    Many people are looking for books about Analysis Services Tabular. Today there are two books available and they complement each other: Microsoft SQL Server 2012 Analysis Services: The BISM Tabular Model by Marco Russo, Alberto Ferrari and Chris Webb Applied Microsoft SQL Server 2012 Analysis Services: Tabular Modeling by Teo Lachev The book I wrote with Alberto and Chris is a complete guide to create tabular models and has a good coverage about DAX, including how to use it for enriching a semantic model with calculated columns and measures and how to use it for querying a Tabular model. In my experience, DAX as a query language is a very interesting option for custom analytical applications that requires a fast calculation engine, or simply for standard reports running in Reporting Services and accessing a Tabular model. You can freely preview the table of content and read some excerpts from the book on Safari Books Online. The book is in printing and should be shipped within mid-July, so finally it will be very soon on the shelf of all the people already preordered it! The Teo Lachev’s book, covers the full spectrum of Tabular models provided by Microsoft: starting with self-service BI, you have users creating a model with PowerPivot for Excel, publishing it to PowerPivot for SharePoint and exploring data by using Power View; then, the PowerPivot for Excel model can be imported in a Tabular model and published in Analysis Services, adding more control on the model through row-level security and partitioning, for example. Teo’s book follows a step-by-step approach describing each feature that is very good for a beginner that is new to PowerPivot and/or to BISM Tabular. If you need to get the big picture and to start using the products that are part of the new Microsoft wave of BI products, the Teo’s book is for you. After you read the book from Teo, or if you already have a certain confidence with PowerPivot or BISM Tabular and you want to go deeper about internals, best practices, design patterns in just BISM Tabular, then our book is a suggested read: it contains several chapters about DAX, includes discussions about new opportunities in data model design offered by Tabular models, and also provides examples of optimizations you can obtain in DAX and best practices in data modeling and queries. It might seem strange that an author write a review of a book that might seem to compete with his one, but in reality these two books complement each other and are not alternatives. If you have any doubt, buy both: you will be not disappointed! Moreover, Amazon usually offers you a deal to buy three books, including the Visualizing Data with Microsoft Power View, another good choice for getting all the details about Power View.

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