Automate deleting of *.log files older than a month

Posted on 2007-12-03
Last Modified: 2013-11-25
Is there anyway I could automate deleting of .log files older than a month.
On one of my servers. Server 2003

The logs are written to this share from a process I run .the log files eat up a lot of space when left unattended to .
Question by:doragbon
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LVL 25

Expert Comment

ID: 20395176
If your backup is made by means of a maintenance-plan you 'll have to specify'delete after X days/weeks/months'.
Additional: when the backup fails for some reason this delete-step is not executed.

Expert Comment

ID: 20395733
Not sure what exactly you are trying to do.  You could just schedule a batch job every month to:

del c:\myLogFolder\*.log
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Expert Comment

ID: 20395948
<from a process I run >
This is the key here: which proces , unless you mention which process, nobody is going to realy help you

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Author Comment

ID: 20395960
I was looking at keeping *.logs for a month at a time
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Expert Comment

ID: 20396089
maintenance plans : see -DelBkUps parameter
EXECUTE master.dbo.xp_sqlmaint N'-PlanID 66E756BE-A4A1-4F4E-ADE3-A45874E75006 -Rpt "e:\MSSQL\LOG\DB Maintenance Plan (All User Db_s)4.txt" -DelTxtRpt 6WEEKS -WriteHistory  -BkUpMedia DISK -BkUpDB "e:\MSSQL\BACKUP" -DelBkUps 8DAYS -CrBkSubDir -BkExt "BAK"'


Expert Comment

ID: 20396240
See 'Dated Directories' in this link:

Run this batch job daily.  On the first day of the month it will copy your log files into directories called D:\Backup\01, on the second into D:\Backup\02 etc.   You could modify it to move rather than xcopy, and to delete the files in the destination directory before copying the new files....

Expert Comment

ID: 20396529
Assuming this is what you want to do, then copy this into a .bat file, and schedule it to run at the end of every day -
@echo off
:: variables
set newdrive=C:\LogHistory
set currentdrive=C:\DailyLog
set folder=%date:~7,2%
set copylog=xcopy /s /c /e /h /i /r /k /y
set delete=del /q /s
%delete% "%drive%\%folder%\*.*"
%copylog% "%currentdrive%" "%newdrive%\%folder%"
%delete% "%currentdrive%\*.*"

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LVL 25

Expert Comment

ID: 20396620
We still don't know how you take your backup <The logs are written to this share from a process I run > 
This could be anything: sqlmaintenanceplan on SQL2000, a command on sQL2005, a third party tool ...

So please specify

Expert Comment

ID: 20396701
I agree - my solutions are hacks to use as a last resort if the process/application you are dealing with can't handle a more elegant solution....really this sort of control should be done at the application level.
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Expert Comment

ID: 20399324
The roll over directories D01 - D10 or something like that is not a bad idee.
But the backup-picture must fit from the beginning to the end.  Everybody must make his choises taking into account their configuration, mix off databases-importances , transaction log or not and level of monitoring.

Maintenance plans are for some people 'not done' because unreliableautomatic cleanup. But cleanup has mainly 2 problems:
- when something went wrong it does not activate :
do you want to delete your oldest backup when the last 3 went wrong? But when no action timely taken your disk runs full.  
- attaching/detaching databases must be done taking into account the backup-model , cleaning up the backups off old databases ....

A perfect tool running unmonitored/untested can be less reliable as the dummy-way but carefully monitored .  I've seen people recovery from a lukky copie because the expensive third-party tool made unusable file-copies of live databases on tape. It's the whole picture or nothing.


Accepted Solution

PaultheBroker earned 250 total points
ID: 20399521
thanks !!!  but I not thinking of transaction logs (makes no sense to treat them this way does it????) - the question is tagged "Microsoft, Windows, Server 2003 " - so probably they aren't talking about database transaction logs at all (which are LDF not LOG files anyway)..who knows???  (just another ill-defined question on EE !!! ).  Hopefully we'll get more clarification soon.... :)
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Assisted Solution

jogos earned 250 total points
ID: 20399843
A database exists of the databasefile (MDF) and its transactionlog (LDF), there could be additional database-files.
A backup can be a full backup (the whole thing) or a transaction log backup (modifications between previous backup and the moment of transaction log backup. This transactionlog backup must (and can only) be taken when a database has the recovery-model : full.

Again: it's the whole package that has to be right

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