Event Id9003
SourceMSSQLServer
DescriptionThe LSN %S_LSN passed to log scan in database '%.*ls' is invalid.
Event InformationAccording to Microsoft

Cause:
If you see this message during startup when the SQL Server process tries to recover the database or as a result of an ATTACH statement, the log file for the database is corrupted. If you see the message during a restore process, the backup file is corrupted. If you see this message during a replication process, the replication metadata may be incorrect.
Resolution:
If you see the error during a restore process, check the integrity of the backup file. If possible, create a new backup in a new location and retry the restore with the new backup file.
If you see this error during startup or when you try to attach a database:
HARDWARE FAILURE
Run hardware diagnostics and correct any problems. Also examine the Microsoft Windows NT system and application logs and the SQL Server error log to see if the error occurred as the result of hardware failure. Fix any hardware-related problems.
If you have persistent data inconsistency problems, try to swap out different hardware components to isolate the problem. Check that your system does not have write caching enabled on the disk controller. If you suspect this to be the case, contact your hardware vendor.
Finally, you might find it beneficial to switch to a completely new hardware system, including reformatting the disk drives and reinstalling the operating system.
RESTORE FROM BACKUP
If the problem is not hardware related and a known clean backup is available, restore the database from the backup.
DBCC CHECKDB
If no clean backup is available, execute DBCC CHECKDB without a repair clause to determine the extent of the corruption. DBCC CHECKDB will recommend a repair clause to use. Then, execute DBCC CHECKDB with the appropriate repair clause to repair the corruption.
CAUTION: If you are unsure what effect DBCC CHECKDB with a repair clause has on your data, contact your primary support provider before executing this statement.
If running DBCC CHECKDB with one of the repair clauses does not correct the problem, contact your primary support provider.
Reference LinksEvent Id:9003 of Source Id:MSSQLServer


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