Solved

excessively large sql server log file

Posted on 2013-01-08
4
228 Views
Last Modified: 2013-01-09
I have a small mdf with a large ldf file. How can I reduce the size of the ldf. Some type of defrag or reindex or compact procedure. Please explain.
0
Comment
Question by:glenn_r
  • 2
  • 2
4 Comments
 
LVL 22

Accepted Solution

by:
Steve Wales earned 210 total points
ID: 38756909
Have just gone through a lot of this discussion in this question:
http://www.experts-exchange.com/Microsoft/Development/MS-SQL-Server/SQL_Server_2008/Q_27988907.html

Have a read of these two blog posts:
http://www.sqlskills.com/blogs/kimberly/8-steps-to-better-transaction-log-throughput/
http://www.sqlskills.com/blogs/kimberly/transaction-log-vlfs-too-many-or-too-few/

It's all explained in there.

Make sure you're taking regular transaction log backups.

To fix (in shorthand):

Take full backup
Take log backup
Shrink log with dbcc shrinkfile
Grow again in chunks to appropriate size for your workload.
0
 
LVL 30

Expert Comment

by:Wayne Barron
ID: 38758135
#1, stay away from Shrinking your logs.
#2, go to the following article.
http://kb.cffcs.com/Main.asp?irid=193&Type=Article

Carrzkiss
0
 
LVL 22

Expert Comment

by:Steve Wales
ID: 38758726
I'm sorry, but I have to disagree with carrzkiss and the site he's directed you to.  Setting your databases to simple for a production database destroys the ability to perform point in time recovery.

Letting the system recreate your log file in this way means you have a small logfile with default sizing and then if you're in full recovery mode, as it grows you end up with log fragmentation and too many VLF's.

Shrinking log files is an acceptable practice.  Shrinking data files is something you want to stay away from.
0
 
LVL 30

Expert Comment

by:Wayne Barron
ID: 38759554
@sjwales
Yes, you are correct, I mis-spoke when I stated not to shrink the log files, I was thinking about the database itself.
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In SQL Server, when rows are selected from a table, does it retrieve data in the order in which it is inserted?  Many believe this is the case. Let us try to examine for ourselves with an example. To get started, use the following script, wh…
SQL Server engine let you use a Windows account or a SQL Server account to connect to a SQL Server instance. This can be configured immediatly during the SQL Server installation or after in the Server Authentication section in the Server properties …
Internet Business Fax to Email Made Easy - With eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, fr…
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…

813 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now