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Transaction logs increasing rapidly.

Posted on 2014-04-03
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Last Modified: 2014-04-15
We have 4 Exchange databases (Exch-2010 SP3) and observed that transaction logs are generating more on one of the database which causes disk space issue.

Can someone guide how we can identify the reason for increasing transaction logs for particular database.
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Question by:sanjayambre
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7 Comments
 
LVL 5

Expert Comment

by:smangogna
ID: 39975599
You have to run a full backup to delete unecesary log files
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Author Comment

by:sanjayambre
ID: 39975916
We have run full backup but my question is how we can identify the reason for generating huge no of transaction logs, is there any tool to find out.
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LVL 8

Assisted Solution

by:EEhotline
EEhotline earned 167 total points
ID: 39976086
Install ExMon on the server and see if you can identify a client that may be hitting the database hard.

http://www.microsoft.com/en-us/download/details.aspx?id=11461


Aso try:

http://blogs.technet.com/b/exchange/archive/2012/01/31/a-script-to-troubleshoot-issues-with-exchange-activesync.aspx

A script to troubleshoot issues with Exchange ActiveSync
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LVL 41

Expert Comment

by:Adam Brown
ID: 39976090
Generally transaction logs will increase on a single database because the mailboxes on that database are making more changes than the other databases. This can be because there is more mail going to those users, or those users are sending more mail, or there are a lot of large attachments on those mailboxes. In general, the only thing that causes transaction log growth is an increase in the number of transactions. If one database is generating more logs than the others, you can try to distribute some of the users on that database to other databases. Other than that, there really isn't much you could do about it. Transaction logs record everything that every user does in Exchange, so you just have to deal with it if one database records more logs or balance the users across your databases more efficiently.
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LVL 43

Assisted Solution

by:Amit
Amit earned 166 total points
ID: 39976546
Single mailbox or DB corruption can also cause abnormal logs. Run mailbox repair database PS command. No downtime required, however better to run after production hours. Check event logs for any errors.

Steps you can find here
http://blogs.technet.com/b/exchange/archive/2010/08/23/3410708.aspx

If still no luck, create new db and move all mailboxes to new db and remove old db.
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Accepted Solution

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Md. Mojahid earned 167 total points
ID: 39977154
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