XADM: Online Restore May Not Replay Log Files
Article ID: 181798
Article Last Modified on 10/28/2006
APPLIES TO
- Microsoft Exchange Server 4.0 Standard Edition
- Microsoft Exchange Server 5.0 Standard Edition
- Microsoft Exchange Server 5.5 Standard Edition
This article was previously published under Q181798
SYMPTOMS
When you are restoring a database created during an online backup, the log
files may not replay into the database being restored if the circular
logging status has been changed from disabled to enabled.
CAUSE
In the following scenario, the log files will not be replayed:
- Circular logging is enabled.
- An online backup is made of the information store or directory.
- Circular logging is disabled.
- A restore of the information store or directory is made to the server.
Log files created after circular logging is disabled cannot be replayed
into a database created when circular logging was enabled. In most cases,
there will be a gap in the logfile sequence, and messages cannot be
recovered from logs residing on the drive.
WORKAROUND
When circular logging is disabled, you must immediately perform a backup of
the information store and directory to be able to restore a database and
replay the log files that will begin to be created after circular logging
is disabled.
Keywords: kbprb kbusage KB181798