• Article

A callback function ended with an error

 

Topic Last Modified: 2007-11-16

The Microsoft Exchange Server 2007 Management Pack for Operations Manager 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 alert, if you are using Microsoft Operations Manager 2005, do one or more of the following:

  • From the Operator Console, select this alert, and then click the Properties tab. Review the description of the alert that includes the variables specific to your environment.

  • From the Operator Console, click the Events tab, and then double-click the event in the list for which you want to review the event description. Review the events that have been logged that meet the criteria of this Operations Manager alert.

To learn more about this alert, if you are using System Center Operations Manager 2007, do one or more of the following:

  • From the Operations Console, double-click this alert, and then click the General tab. Review the description of the alert that includes the variables specific to your environment.

  • From the Operations Console, double-click this alert, and then click the Alert Context tab. Review the events that have been logged that meet the criteria of this Operations Manager alert.

Details

Product Name

Exchange

Product Version

8.0 (Exchange Server 2007)

Event ID

904

Event Source

ESE BACKUP

Alert Type

Warning

MOM Rule Path

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

MOM Rule Name

A callback function ended with an error.

Explanation

This Error event indicates that an Extensible Storage Engine (ESE) callback function returned an error. This error can potentially signify a serious situation in which a backup or restore process has failed. The error message included in the message text of Event ID 904 will vary, depending on the problem encountered. See User Action for some specific causes and resolutions to this error.

User Action

To resolve this error, consider the following specific causes and resolutions for this problem:

  • Log files are missing or are invalid, and ESE cannot finish log file replay after restoring the database files. Use the Database Recovery Management tool in the Toolbox of the Exchange Management Console to check your log files.

  • You tried to restore a database and did not specify the option to enable the existing database to be overwritten by the restore process. You specify this option by selecting the This database can be overwritten by a restore check box. This check box is located on the properties of a mailbox store or public folder store. You can also specify this option by running the following Exchange Management Shell command:

    Set-MailboxDatabase <restored_database> -AllowFileRestore $true

    For more information about this cmdlet, see Set-MailboxDatabase in the Exchange Server 2007 Help.

  • The database was not dismounted before you started the restore process. Dismount the databases that you want to restore, and try the restore process again.

  • The checksum of the log files existing on the server does not match the checksum of the log files on the backup. If this error occurs, one or more of your transaction log files may be damaged. Use the Database Recovery Management tool in the Toolbox of the Exchange Management Console to check your log files.

If you cannot restore your backup after considering the information provided in this article, search the Microsoft Knowledge Base for more information about the specific error codes in this event. If you still cannot resolve this problem, contact Microsoft Product Support Services. For information about how to contact support, visit the Contact Us page of the Microsoft Help and Support Web site.

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 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.