When running an Exchange backup with the GRT option enabled, the error "-528 The current log file is missing" or "-1206 There is a non-database file or corrupted database" is being returned.
Completed status: Failed
Final error: 0xe00002f7 - Cannot extract mailbox messages from the Exchange backup. Review the job log for more information.
Final error category: Resource Errors
V-79-57344-759 - Unable to complete the operation for the selected resource using the specified options.
The following error was returned when opening the Exchange Database file: '-528 The current log file is missing.
The following error was returned when opening the Exchange Database file: '-1206 There is a non-database file or corrupted database.
This error is caused by a corrupt or missing Exchange Transaction Log.
In order to resolve this, the Exchange Transaction Logs need to be flushed. There are several different ways to perform this action.
1. Reboot the Exchange server. If this cannot be done or if it does not resolve the issue, continue to steps 2 and 3.
2. Run a full non-GRT backup of the Exchange Database. Once this job is complete and the logs have been flushed, re-enable GRT and the job should complete successfully.
3. Delete the Logs manually using the EseUtil feature, as indicated in this Microsoft KB article http://support.microsoft.com/kb/240145.