Article: Q181798
Product(s): Microsoft Exchange
Version(s): WINDOWS:4.0,5.0,5.5
Operating System(s):
Keyword(s): kbusage
Last Modified: 02-APR-1999
-------------------------------------------------------------------------------
The information in this article applies to:
- Microsoft Exchange Server, versions 4.0, 5.0, 5.5
-------------------------------------------------------------------------------
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:
1. Circular logging is enabled.
2. An online backup is made of the information store or directory.
3. Circular logging is disabled.
4. 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 : kbusage
Technology : kbExchangeSearch kbExchange500 kbExchange550 kbExchange400 kbZNotKeyword2
Version : WINDOWS:4.0,5.0,5.5
Issue type : kbprb
=============================================================================