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Re: How to move transaction logs on-line?

Posted by Erland Sommarskog on 07/04/06 22:03

nai (nioannides@laiki.com) writes:
> I have a database with 20GB transaction log file.
> The recovery model of the database is Full.
> I need to move the T. log file to a new location with the minimal
> downtime.
> I know I can do this by dettaching the DB, copying the T. Log and
> attaching it at the new location. This will take some time though as
> copying the T. log file will take up some time.
>
> I thoght that I could maybe create a secondary T. log file and delete
> the primary T. log file.
> What does it take so I'm able to delete the primary T. log file? Can
> you please explain how to accomplish this?

It appears you cannot remove the primary log file.

I would:

1) Backup the transaction log.
2) Shrink the log file.
3) Throw out users.
4) Detach database.
5) Copy log file (which is now small).
6) Attach database.
7) Let users in.
8) Increase log file to 20 GB again.


--
Erland Sommarskog, SQL Server MVP, esquel@sommarskog.se

Books Online for SQL Server 2005 at
http://www.microsoft.com/technet/prodtechnol/sql/2005/downloads/books.mspx
Books Online for SQL Server 2000 at
http://www.microsoft.com/sql/prodinfo/previousversions/books.mspx

 

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