|Message:||%1 (%2) %3Unable to read the header of database %4. Error %5. The database may have been moved and therefore may no longer be located where the logs expect it to be.|
This Warning event indicates that the database engine is unable to read the database header. The database may have moved and therefore may no longer be where the logs expect it to be. Data could be missing or was moved during recovery of the database.
If this database was restored from online backup, the recovery process will automatically try to correct this problem. If this error occurs, the correction was unsuccessful, and information from subsequent transaction logs will not be applied to the database.
If this database was restored from a file copy or offline backup, you may be able to correct this problem by using eseutil /r and specifying the new database path. You must restore the database again to redo recovery when this error occurs.
If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.