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How to repair backup of .mdf file database?

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How to repair backup of .mdf file database?

jordan26henderson
One of our clients gets the following error when trying to backup a database:


quote:
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System.Data.SqlClient.SqlException: SQL Server detected a logical consistency-based I/O error:
incorrect checksum (expected: 0x121db60d; actual: 0x521db60d).
It occurred during a read of page (1:1632) in database ID 4 at offset 0x00000000cc0000 in file
'C:\Program Files (x86)\Microsoft SQL Server\MSSQL.1\MSSQL\DATA\MSDBData.mdf'.
Additional messages in the SQL Server error log or system event log may provide more detail.
This is a severe error condition that threatens database integrity and must be corrected immediately.
Complete a full database consistency check (DBCC CHECKDB).
This error can be caused by many factors; for more information, see SQL Server Books Online.
Could not insert a backup or restore history/detail record in the msdb database.
This may indicate a problem with the msdb database.
The backup/restore operation was still successful.
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I tried to perform checkdb, checkdb repair_rebuild as well as checkdb REPAIR_ALLOW_DATA_LOSS but none of these corrected the issues is the MSDB database.

My question is: can I just grab a clean MSDB database from another instance to recover corrupt one or do I really have to uninstall/reinstall SQL Server?

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