Unable to read database header - database may have moved, or data was moved or was missing during recovery
Topic Last Modified: 2007-11-16
The Microsoft Exchange Server 2007 Management Pack for Microsoft Operations Manager (MOM) monitors the Windows Application log on computers that are running Exchange Server 2007 and generates this alert when the event or events specified in the following Details table are logged.
To learn more about this event, do one or more of the following:
Review the description of the event that includes the variables specific to your environment. From the MOM Operator Console, select this alert, and then click the Properties tab.
Review all events that have been logged that meet the criteria of this MOM alert. From the MOM Operator Console, click the Events tab, and then double-click the event in the list for which you want to review the event description.
Details
Product Name |
Exchange |
Product Version |
8.0 (Exchange Server 2007) |
Event ID |
420 |
Event Source |
ESE |
Alert Type |
Warning |
MOM Rule Path |
Microsoft Exchange Server/Exchange 2007/Common Components/Extensible Storage Engine |
MOM Rule Name |
Unable to read database header - database may have moved, or data was moved or was missing during recovery. Information from subsequent transaction logs will not apply to the database. |
Explanation
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.
User Action
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.
For More Information
To search the Microsoft Knowledge Base articles based on criteria that generated this alert, visit the Search the Support Knowledge Base (KB) Web site.
To review Exchange 2007 event message articles that may not be represented by Exchange 2007 MOM alerts, see the Events and Errors Message Center.
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.