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SQL Logfiles over 80GB

Posted on 2013-12-06
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Last Modified: 2013-12-06
Hi Experts,

I have some SQL logfiles which are very big. over 80GB.
With a command I checked the log and just 1% is used.
Under options of this DB I found the feature autoshrink file.

When I use autoshrink, is this a problem ?
Or do I have some disadvantages ?
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Question by:Eprs_Admin
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4 Comments
 
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Expert Comment

by:mike706
ID: 39700376
From SSMS run Task -> Shrink -> Files and shrink the Log file.
Mark the option "Reorganize pages Before releasing unused space" and set "Shrink file to".

Make sure that the Log file is not shrink to 0% available space after shrink.
This file size is depending on the amount of transactions made to the database.

Then setup a backup job with option FULL to make a backup of the database. If the Recovery Model is set to FULL on the database also make a log backup between the FULL backups.
Typically a log backup is set to every hour during the day when the transactions is made to the database. This will help to have the transaction log in shape.
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Author Comment

by:Eprs_Admin
ID: 39700416
I cannot find this option :
 "Reorganize pages Before releasing unused space"
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Accepted Solution

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mike706 earned 2000 total points
ID: 39700469
You will find it under the Shrink files window.

What version of SQL server are you using?

You can also try to do it with a Query.

USE [Database]
GO
DBCC SHRINKFILE (N'Filename of logfile' , 2)
GO

Change the Database to the corresponding database and "Filename of logfile" to the logical name of the logfile. The number is the value in MB how big the log file should be after the shrink.

Don't forget to make backup Before Shrinking the database.
pic.PNG
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Author Closing Comment

by:Eprs_Admin
ID: 39700694
Thanks my friend
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