Question

CRM Log File Huge !

Asked by: pbgormley

Server Configuration:
Server 2003 Enterprise Edition R2 Sp2
SQL Server 2005 SP4
CRM 4.0

Problem:
The MSCRM database, db_name_MSCRM.mdf,  is slowly growing with size around 17 GB.
The MSCRM log file, db_name_MSCRM_Log.ldf is growing rapidly and presently stands around 21 GB

how can i clean this log file?
Cheers
Paul

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Asked On
2009-08-26 at 05:03:32ID24682887
Topic

CRM Software

Participating Experts
2
Points
500
Comments
17

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Answers

 

by: Aftab_KhateebPosted on 2009-08-26 at 14:04:40ID: 25192240

Looks like you have not set the maximum size for your transaction logs
I hope you are taking regular backups of your transaction log
set your db to Auto_shrink mode as this will keep the log file generation under control

Right click the database and select properties, then navigate to the 'transaction log' tab. There is also a way to set up a database maintenance plan which remove old transaction logs

Also have a look at this link
http://piyushmittal.wordpress.com/2007/12/17/truncate-purge-sql-2005-database-log-files/

Let me know how u go

 

by: lsavidgePosted on 2009-08-28 at 01:29:18ID: 25205739

Are the log files being backed up or are you just backing the database files up? If you're just backing the database up and the database is in full recovery mode rather than simple, this will happen.

Cheers,

Lee

 

by: pbgormleyPosted on 2009-09-01 at 01:04:40ID: 25229361

Its just the Database being backup...

 

by: lsavidgePosted on 2009-09-01 at 01:26:42ID: 25229456

If the database is in full receovery mode then the log files will continue to grow. Either change the receovery mode to Simple and do a log back up and then use dbcc shrinkfile to shrink the logs or change your backup maintenance plan to back the logs up as well. Once you've done a back up then you can try shrinking them.

See here for DBCC shrinkfile usage: http://support.microsoft.com/kb/907511
See here for info on backing up transaction logs: http://msdn.microsoft.com/en-us/library/ms179478.aspx
See here for info on recovery modes: http://msdn.microsoft.com/en-us/library/ms189275.aspx

Lee

 

by: pbgormleyPosted on 2009-09-03 at 00:27:41ID: 25248463

Thanks Lee, Ive had a good read over all of that.

I set up a maintenance plan and it ran last night, failed on the shrink database step, any ideas?

 

by: lsavidgePosted on 2009-09-03 at 00:44:23ID: 25248536

You'll need to look at the job history. It'll tell you what was wrong. If you take a look at the history and post it here if it isn't clear I'll see if I can work it out. Are the logs still huge or have they been shrunk down now?

Cheers,

Lee

 

by: pbgormleyPosted on 2009-09-03 at 00:51:27ID: 25248574

Thanks for the quick response Lee, much appreciated, I ran the SQL query for shrinking the Log file and it worked a treated. I've attached the log entry below for the failed shrink job...

Date		02/09/2009 15:50:13
Log		Job History (Step_2_ShrinkDB.Subplan_1)
 
Step ID		0
Server		MSCRM
Job Name		Step_2_ShrinkDB.Subplan_1
Step Name		(Job outcome)
Duration		00:00:19
Sql Severity		0
Sql Message ID		0
Operator Emailed		
Operator Net sent		
Operator Paged		
Retries Attempted		0
 
Message
The job failed.  The Job was invoked by User [Domain]\Administrator.  The last step to run was step 1 (Subplan_1).
                                              
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by: lsavidgePosted on 2009-09-03 at 02:16:29ID: 25248912

I'm wondering if there is any need to shrink the database. I see the server is for MSCRM so I am assuming this is a Dynamics database. I know that prior to rollup 3 there was a problem with some of the tables getting very large.

Lee

 

by: pbgormleyPosted on 2009-09-03 at 03:01:33ID: 25249085

yeah its CRM 4.0.... its currently at 17gb which seems very very large....

 

by: lsavidgePosted on 2009-09-03 at 03:41:27ID: 25249260

I know this is off topic but what rollup is it on?

Lee

 

by: pbgormleyPosted on 2009-09-03 at 03:54:34ID: 25249321

Its CRM 4.0 Rollup 3.... planning Roll up 6 at the moment

 

by: Aftab_KhateebPosted on 2009-09-03 at 03:56:22ID: 25249334

 

by: pbgormleyPosted on 2009-09-03 at 03:58:54ID: 25249341

Hi, its the DB not the log file. Thanks

 

by: lsavidgePosted on 2009-09-03 at 04:27:05ID: 25249481

I believe rollup 4 may fix your problem then. There is a bug in CRM 4.0 with rollup versions 3 and below.

http://support.microsoft.com/kb/968520/en-us

Some tables grow massive. There are some scripts on the above page which may help you.

Lee

 

by: pbgormleyPosted on 2009-09-03 at 04:56:17ID: 25249669

I think it might be time for roll up 6.....

 

by: lsavidgePosted on 2009-09-03 at 05:31:38ID: 25249920

Apply that and let me know how it goes. You might still need to run those scripts on the knowledgebase article I posted.

Cheers,

Lee

 

by: lsavidgePosted on 2009-09-03 at 05:38:53ID: 25249980

There is a VERY handy sp in this doc:

http://media.techtarget.com/searchSQLServer/downloads/URL_for_SQL_Script_download_Tip_on_Sp_SOS.doc

It gives you a table breakdown in the database showing you the physical size each table takes up. It is handy for identifying runaway tables.

Lee

20120131-EE-VQP-002

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