Database requires log files that could not be located
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 |
453 |
Event Source |
ESE |
Alert Type |
Warning |
MOM Rule Path |
Microsoft Exchange Server/Exchange 2007/Common Components/Extensible Storage Engine |
MOM Rule Name |
Database requires log files that could not be located. The database requires log files to continue. Make sure the log files exist. Check Event logs for more information. |
Explanation
This Warning event indicates that the database requires log files that could not be located. The database requires log files in order to continue.
You will see the following phrase in the event description: Information Store number GUID Database path\filename requires log files (for example) 154-158 in order to recover successfully. Recovery could only locate log files up to (for example) 157.
There are several possible causes of this event. They are as follows:
An online restore fails because the log files are missing from the temporary folder that is 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 needed for the restore.
Antivirus software has quarantined the current log file, E0n.log.
User Action
To resolve this warning, 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 media. If they have been moved, move them to the appropriate location. The event Description will specify the required files.
Check for related events and their description to determine specific causes and resolutions.
Try to locate the missing log files, put them in the appropriate folder and run eseutil /cc (hard recovery) or run eseutil /cc /t to specify another location for all the necessary logs together in one folder, and then 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. Then, use Move Mailbox to put the results to a blank database.
Stop the antivirus software that is scanning the Exchange store files directory, and check the registry settings for the antivirus software. Put the current log file back in the appropriate directory. Make sure that you have correctly configured your antivirus software. For more information, see the Microsoft Knowledge Base article 328841, Exchange and Antivirus Software.
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.