Re: Log files not being purged

  • From: "Mike Dufoe" <dufoem@xxxxxxxxxxx>
  • To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Fri, 9 Jul 2004 13:27:24 -0400

Thanks Ghulam!

Here's the log from the Exchange backup and looks good to me unless those dozen 
Corona's from last night are still affecting my eye site.

Backup Status
Operation: Backup
Active backup destination: File
Media name: "Media created 7/8/2004 at 11:32 AM"

Backup of "EXCHANGESERVER\Microsoft Information Store\First Storage Group"
Backup set #1 on media #1
Backup description: "Set created 7/8/2004 at 11:33 AM"
Backup Type: Normal

Backup started on 7/8/2004 at 10:01 PM.
Backup completed on 7/8/2004 at 10:23 PM.
Directories: 4
Files: 6
Bytes: 12,350,038,648
Time:  21 minutes and  38 seconds
Media name: "Media created 7/8/2004 at 11:32 AM"

Not sure where I check for Sequential logging, but I check our First Storage 
Group and it's not set for Circular logging neither.


-----Original Message-----
From: GQure@xxxxxxx [mailto:GQure@xxxxxxx] 
Sent: Friday, July 09, 2004 10:28 AM
To: [ExchangeList]
Subject: [exchangelist] Re: Log files not being purged

Mike Dufoe,

When circular logging is disabled, transactions are written until the log 
becomes full, after which another log file is started. With sequential logging, 
there will be as many transaction log files as necessary to keep record of the 
transactions written to the Exchange databases. Each transaction log takes up 5 
MB of space, so if you have 50 logs, you'll need 500 MB of disk space to 
contain them. Under sequential logging, once a full backup of the storage group 
is performed, the transaction logs are no longer needed and are purged except 
for the first one.  If you don't do regular backups, however the logs will 
continue to multiply until you run out of disk space. 

I would suggest you to check your logging (sequential or circular). If 
sequential logging is in place then you better have to check your backups and 
make sure full backups are performed in order to purge log files.

Ghulam M. Qureshi
Exchange Engineer

>Any ideas?
>Mike Dufoe
>System Administrator
>ETI Canada Inc.
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