• Article

The database requires the specified log files in order to recover successfully

 

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

452

Event Source

ESE

Alert Type

Critical Error

MOM Rule Path

Microsoft Exchange Server/Exchange 2007/Common Components/Extensible Storage Engine

MOM Rule Name

The database requires the specified log files in order to recover successfully. Replace missing log files, restore from backup, or repair information store.

Explanation

This Error event indicates that online database recovery has stalled because one or more log files in the temporary folder are missing. The recovery process of the database requires log files to continue.

The following are some causes of missing log files:

  • An online restore fails because log files are missing from the temporary folder specified in the Microsoft Windows Backup program under the temporary location for log files.

  • A hardware failure causes loss of log files in the log file sequence required for the restore.

  • After you repair the priv1.edb database by using Eseutil /p, you receive event 454 when you try to start the public information store. The error indicates that a problem is occurring when you try to replay the log files when the public information store is trying to mount. This error can occur if after you run Eseutil /p against priv1.edb, you do not remove the transaction logs. If you do not run Eseutil /p against pub.edb, the pub1.edb file is looking for a different set of log files than the priv1.edb file. Therefore, event 454 reports the files as absent.

User Action

To resolve this error, do one or more of the following:

  • Verify whether the log files have been moved or deleted. If the log files have been deleted, restore them from backup. If they have been moved, move them back to the appropriate location. The event text will specify the required files.

  • Try to locate the missing log files and put them in the appropriate folder. Then run Eseutil /cc (hard recovery) or run Eseutil /cc /t to specify another location for all the necessary logs. Finally, mount the database. If the log files cannot be located, restore from an earlier backup or as a last resort, repair the database, run Isinteg -fix, and use ExMerge to copy the results to a blank database.

  • Restore from an earlier backup, or as a last resort, repair the database, run Isinteg -fix, and use Move Mailbox to move data into a blank database.

  • Repair the public information store. Remove all the transaction logs. Run Isinteg -fix against the private store and then against the public store. Use ExMerge to add the results of the private store to a new blank private store. Save all public folders to .pst files and then bring the information back from .pst files to a new blank public store.

For information about ESE error codes, see the following Microsoft Knowledge Base articles:

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.