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Some databases intermittently do not come back online when a cluster failover occurs in an Exchange Server 2007 CCR environment
Article ID: 971010 - View products that this article applies to.
In a Microsoft Exchange Server 2007 cluster continuous replication (CCR) environment, some databases intermittently do not come back online when a cluster failover occurs. When this problem occurs, the following event error is logged:
Event ID : 455
If the log replayer that is running on the target replication instance is not stopped completely before you finish copying all the log files, the following problems may occur:
To resolve this problem, install Update Rollup 1 for Microsoft Exchange Server 2007 Service Pack 2 (SP2).
For more information about Update Rollup 1 for Exchange 2007 Service Pack 2, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/971534/ )Description of Update Rollup 1 for Exchange Server 2007 Service Pack 2
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.