When you perform a MS Exchange 2010 server backup (either full or transaction log), you receive the following message in the backup report:
“No *tmp.log found for database ‘Microsoft Exchange Server\Microsoft Information Store\SERVER\Mailbox Database’
Errors found while validating your backup files. Please run a full backup to correct the problem.”
The error is caused when the circular logging option of the affected mailbox database was previously disabled, and then enabled again.
When circular logging is enabled, the *.tmp (temporary workspace) file is not spooled to the temporary directory, causing this error.
To resolve the problem, you need to disable circular logging for the affected mailbox database. For Exchange 2010 you need to follow these steps:
- Start Exchange Management Console
- Expand Microsoft Exchange On-Premisis (Server), then expand Organization Configuration
- Select Mailbox, and right click on the affected mailbox database shown in the middle panel.
- Select Properties, and the Maintenance tab
- Un-check the Enable circular logging checkbox:
When circular logging is disabled you will need to restart the Microsoft Exchange Information Store Service, for the changed to take effect. Within backup-Connect OBM you need to perform a full exchange server backup manually (below). This backup will complete with the same error but the *tmp.log file will be newly uploaded. You need to perform an incremental backup afterwards to check if problem is solved.
For more information refer to: http://msdn.microsoft.com/en-us/library/aa579094%28v=exchg.140%29.aspx
