Fix Error- database Recovery And Restore Failed With An Unexpected Error In Exchange Server

Exchange Information Store service is a critical component

, without the help of which Exchange Server might prove to be of no such use. The Information Store comprises of different storage groups and if these groups go corrupt, these might result in data inaccessibility. Moreover, in critical situations when Information Store service stops, you might find it difficult to restore the data until you have a backup copy of the same. Or else, you would have to use professional utilities to perform Microsoft Exchange Recovery.

When you perform operations from Exchange Server such as taking an online backup or defragmentation, the system reads each database page for writing or other processes. In order to perform this function, it first performs checksum test and checks if it is correct. However, if in case the page checksum mismatch so conducted by database engine results in an error then the operations are terminated. These error messages occur from physical database corruption and force you to perform database restore from backup or apply some helpful measures to fix database corruption.

When come across such situation with Microsoft Exchange Server 2007, you might come across the following symptoms:

1.Computer system is unable to start MS Outlook

2.Users fail to send/receive emails

3.Online backups and defragmentation fail with a-1018 checksum mismatch error

4.The application event log in Exchange Server reports an error that says- Database recovery and restore failed with an unexpected error.

The above mentioned symptoms depict that Exchange Server has failed to read database page as a result of some checksum mismatch and therefore the page is corrupt. However, the same issue can occur due to firmware malfunction or problem in RAM. For specific reasons, we suggest you to view the error code listed in the event description. You need to apply the following measures to resolve the given problem:

1.If the error listed in the event description is found to be -515, then the transaction log file(s) might be missing. Verify the missing logs and move them back to the log directory and/or restore the database from backup.

2.Check the system for hardware issues and resolve them or migrate them to a different hardware.

3.Consider upgrading the BIOS and firmware

4.Perform Microsoft Exchange Server Recovery with eseutil /P command, followed by eseutil /D and isinteg fix. Ensure that you have the backup copy of the data as performing this repair might result in loss of important database pages.

Therefore to perform secure Microsoft Exchange Server Recovery, consider using solutions such as Microsoft Exchange Server Recovery software. These professional software are built with advanced techniques and technology to run effective scan for a corrupt database and extract the imperative data from it. The Microsoft Exchange Server Recovery tool recovers all mailboxes in individual *.pst files and also enables you select them as per requirement.

by: Partition Recovery

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