Change Sql Server Error Log Size
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Sql Server Error Logs Recycle
Randal in SQL Server Questions Answered RSS EMAIL Tweet Comments 0 Question: Some of the SQL Server instances I manage routinely have extremely large (multiple gigabytes) error logs because they are rebooted so infrequently. Trying to open an error
Sql Server Error Logs Too Big
log that large is really problematic. Is there a way that the error logs can be made smaller? Answer: I completely sympathize with you. Very often when dealing with client systems we encounter similar problems. Thankfully there is an easy solution. (See also, "Choosing Default Sizes for Your Data and Log Files" and "Why is a Rolled-Back Transaction Causing My Differential Backup to be Large?"). The number of error logs is set to 6 by default, and a new view sql server error logs one is created each time the server restarts. Old ones are renamed when a new one is created and the oldest is deleted. As you’ve noticed, this can lead to extremely large error log files that are very cumbersome to work with. There is a registry setting ‘NumErrorLogs’ that controls the number of error log files to keep in the LOG directory. This can easily be changed through Management Studio. In Object Explorer for the instance, navigate to Management then SQL Server Logs. Right-click and select Configure as shown below. This brings up the Configure SQL Server Error Logs dialog. Check the ‘Limit the number of error log files before they are recycled’ box and set your desired number of files – I usually choose 99. See the screenshot below. This doesn’t solve the size problem, but does mean that more error logs will be kept around. To solve the size problem, create a SQL Server Agent job that executes at some point every day and runs the command EXEC sp_cycle_errorlog; GO This causes a new error log file to be created and will prevent the error log becoming overly large on systems that do not reboot for a long time. Print reprints Favorite EMAIL Tweet paulrandal's blog Log In or Register to post comments EMAIL Print Recovering a database with a missing transaction log Controlling MAXDOP of execu
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Sql Server Errorlog File Size
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Facebook Twitter LinkedIn YouTube GitHub Forgotten Maintenance - Cycling the SQL Server Error Log September 30, 2015Jeremiah Peschka20 comments Most of us get caught up in fragmentation, finding the slowest queries, and looking at new features. We forget the little things that make managing https://www.brentozar.com/archive/2015/09/forgotten-maintenance-cycling-the-sql-server-error-log/ a SQL Server easier - like cylcing the SQL Server error logs. What's the Error http://www.sqlskills.com/blogs/paul/limiting-error-log-file-size-in-sql-server-2012/ Log? The SQL Server error log is a file that is full of messages generated by SQL Server. By default this tells you when log backups occurred, other informational events, and even contains pieces and parts of stack dumps. In short, it's a treasure trove of information. When SQL Server is in trouble, it's nice to have this available sql server as a source of information during troubleshooting. Unfortunately, if the SQL Server error log gets huge, it can take a long time to read the error log - it's just a file, after all, and the GUI has to read that file into memory. Keep the SQL Server Error Log Under Control It's possible to cycle the SQL Server error log. Cycling the error log starts a new file, and there are only two sql server error times when this happens. When SQL Server is restarted. When you execute sp_cycle_errorlog Change everything! When SQL Server cycles the error log, the current log file is closed and a new one is opened. By default, these files are in your SQL Server executables directory in the MSSQL\LOG folder. Admittedly, you don't really need to know where these are unless you want to see how much room they take up. SQL Server keeps up to 6 error log files around by default. You can easily change this. Open up your copy of SSMS and: Expand the "Management" folder. Right click on "SQL Server Logs" Select "Configure" Check the box "Limit the number of error log files before they are recycled" Pick some value to put in the "Maximum number of error log failes" box Click "OK" It's just that easy! Admittedly, you have to do this on every SQL Server that you have, so you might just want to click the "Script" button so you can push the script to multiple SQL Servers. Automatically Rotating the SQL Server Error Log You can set up SQL Server to automatically rotate your error logs. This is the easiest part of this blog post, apart from closing the window. To cycle error logs on a regular basis, restart your SQL Server nightly. Only joki
Randal Posted on: November 4, 2013 4:09 pm It's quite well known that you can optimize error log file management using SSMS to change the maximum number of error log files to 99 and running sp_cycle_errorlog every day at midnight (see this post on my old SQL Server Magazine blog for graphics). This works in all current versions of SQL Server. One thing that hasn't been possible before is setting the maximum size of individual SQL Server error logs before SQL Server triggers cycling to a new error log. Well it turns out that in SQL Server 2012 you can! While in my post-con workshop at SQL Intersection in Las Vegas last week, Jan Kåre Lokna (a former Immersion Event attendee from Norway) discussed some code he's been experimenting with and I just heard from him that he got it to work. The following code will set the maximum size of each error log file to 5MB on a SQL Server 2012 instance: USE [master]; GO EXEC xp_instance_regwrite N'HKEY_LOCAL_MACHINE', N'Software\Microsoft\MSSQLServer\MSSQLServer', N'ErrorLogSizeInKb', REG_DWORD, 5120; GO I've tested this on SQL Server 2008 R2 and it does not work there, so the registry key must be new for SQL Server 2012. This is really useful to protect against gigantic error log files caused by repeated crash dumps, for instance when messing around with DBCC WRITEPAGE :-) [Edit: 10/23/15] Also, for SQL Server 2014 the registry keys have changed again: USE [master]; GO -- Limit size of each file EXEC xp_instance_regwrite N'HKEY_LOCAL_MACHINE', N'SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL12.MSSQLSERVER\MSSQLServer', N'ErrorLogSizeInKb', REG_DWORD, 1024; GO -- Number of ErrorLog Files EXEC xp_instance_regwrite N'HKEY_LOCAL_MACHINE', N'SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL12.MSSQLSERVER\MSSQLServer', N'NumErrorLogs', REG_DWORD, 8; GO You can read a more in-depth description on Jan's blog here. Related PostsOver and