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Exchange 2010 rapidly increasing  log files

Posted on 2013-01-21
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Last Modified: 2013-01-22
Hi

My problem is that my log files is increasing rapidly and the disk reserved for log files (80 gb) is running out of space. This started yestoday. The database is placed on another disk (.edb =20 gb). The strange thing is that the log files after less than 3 hours groves from 2 gb to 60 gb. So the total amount of all log files is much bigger than the actual .edb. file.

There are no extraordinary traffic to and from the Exchange server and everything looks normal.  

What I have done:

First I ran a full backup merging the log files into the database - this was not possible because I did not have enough free space on the log drive (80 gb). After that i enabled circular logging which merged all log files. But when I disabled the circular logging again the creation of log files exploded.

Any help appreciated

kr
Rasmus
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Question by:Luxor_like
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9 Comments
 
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Expert Comment

by:Amit
ID: 38801046
You need to look for following issues:

Any Mailbox going on?
Any Backup task Hung?
Any Spam Attack? It can happen, if you have mailbox with unlimited size.
Any Server relaying traffic?

finally check the logs and enable the diagnostic logging.

also you can remount the db and check if that makes any difference.
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Expert Comment

by:imkottees
ID: 38801075
you can use exmon to check whether any mailboxes stuck..
http://www.microsoft.com/en-us/download/details.aspx?id=11461
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Expert Comment

by:Manpreet SIngh Khatra
ID: 38801195
What is the size of the EDB file ?
If some space i would create a new DB mark circular logging and move mailboxes as that will take car eof any corruption or looping items

- Rancy
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Expert Comment

by:Dhanukadam
ID: 38801198
Hi
Please chek the below URl which will help u to fin root cause

http://technet.microsoft.com/en-us/library/ff477617.aspx
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Author Comment

by:Luxor_like
ID: 38801502
imkottees: I have installed the exmon - but I do not now what to look after?

Rancy: Do you have a more specific "how to" (do I have to unmount the running database - after creating the new db with circular logging how to backup log files?)
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Accepted Solution

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imkottees earned 500 total points
ID: 38801540
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Expert Comment

by:Manpreet SIngh Khatra
ID: 38802410
No its more like create a new DB enable circular logging on both DB's and then Restart the Information store service and simply start Move mailbox .... once completed take a backup of the new DB

- Rancy
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Author Closing Comment

by:Luxor_like
ID: 38804956
imkottees: Exmon helped me pin out the reason -  a user that synced his Ipad with 32 thousand e-mails :o(

Thanks a lot!!
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Expert Comment

by:imkottees
ID: 38805034
you are welcome.
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