DBCC CHECKDB is somewhat famous for DBA to run in case of database corruptions.
This is the syntax for it.
So incase of a corruption, you can have either of three parameters, REPAIR_FAST, REPAIR_REBUILD and REPAIR_ALLOW_DATA_LOSS. Out of these parameters let us focus on REPAIR_FAST. This is the documentation for REPAIR_FAST in SQL Server 2000
Performs minor, nontime-consuming repair actions such as repairing extra keys in nonclustered indexes. These repairs can be done quickly and without risk of data loss.
However, do you know that this is no more with SQL Server 2005 onwards.
This is the documentation for the REPAIR_FAST.
Maintains syntax for backward compatibility only. No repair actions are performed.
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