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 INCREASE IN SIZE .LDF

Author  Topic 

badara24
Starting Member

3 Posts

Posted - 2010-03-12 : 03:22:46
we have one hr module which is accessing sql server2000 database which is in clustering.we are having 13 database on whole in which all are having 1mb as .ldf file. As we are facing the time out expired problem in one of the application in hr database..one of team mate increased to 25gb (.ldf) is there any performance issue over this. i mean to say increase from 1mb to 25gb. we are facing the problem can one suggest me.. please. Is that the correct solution for the timeout expired.

tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2010-03-12 : 18:03:22
Increasing the LDF file in size will not cause this issue. Having the LDF at 1MB in size could though depending upon how quickly the file can grow in response to transactions. You should not have a 1MB LDF file on any production system unless your databases are super tiny. And by tiny I mean like 100MB or less.

Here's a recent article I posted regarding application timeouts: http://weblogs.sqlteam.com/tarad/archive/2010/03/08/Troubleshooting-Application-Timeouts-in-SQL-Server.aspx

Tara Kizer
Microsoft MVP for Windows Server System - SQL Server
http://weblogs.sqlteam.com/tarad/

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tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2010-03-12 : 18:14:26
I should also mention what my blog post doesn't discuss regarding applicaton timeouts:
1. Lack of indexes for the queries
2. Poorly written queries

I don't mention these things in that blog post, since my blog reader already has those things covered.

For the queries that are timing out, what does the execution plans show? Any scans?

Tara Kizer
Microsoft MVP for Windows Server System - SQL Server
http://weblogs.sqlteam.com/tarad/

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"Let's begin with the premise that everything you've done up until this point is wrong."
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