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How to truncate Log file - it is too large (10 GB)

Posted on 2006-07-23
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Last Modified: 2008-03-10
Hello,
 
      I am new to SQL Server.

      I have a small in-house developed package running on Microsoft SQL Server from last 1 year. I am using FIFO method for Material Management System in my code, which is deleting & adding desired rows in temporary tables based on conditions.

     My data file size is 308 MB, where as my log file size is continuously growing. (Currently it is 10GB). I am scared of file size growth, as I have few GBs left on hard disk. So please tell me what does log file contains? And how do I truncate the log file?

    Thanks in advance!
    ---Chitra
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Question by:ChitraMarathe
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Guy Hengel [angelIII / a3] earned 250 total points
ID: 17165468
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by:David Todd
ID: 17165497
Hi,

If this is drastic, and things need to change NOW, then the quick patch is to detach the database, rename/move the log file, and reattach the database. SQL will create an empty logfile at the default (small) size.

This isn't a cure.

Its a trick to get on top of out-of-control log files.

Also use the Taskpad view in Enterprise Manager, as an easy way to see unused space.

Regards
  David
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LVL 35

Expert Comment

by:David Todd
ID: 17165506
Hi,

detach the database with sp_detach_db mydatabase
rename/move/delete the log file ...
attach the database with sp_attach_db 'mydatabase', 'mydatabasedatafile.mdf'

Regards
  David
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Expert Comment

by:nmcdermaid
ID: 17166046
... and then change your recovery model to 'simple'



but read the MS KB's for full info.
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