REPAIR_ALLOW_DATA_LOSS: It can fix all types of corruption errors.REPAIR_REBUILD: It helps rebuild an index and repair any missing rows in a table with nonclustered index – without any data loss.REPAIR_FAST: This options helps fix backward compatibility issues in a database.If the backup is not updated or is corrupted, run DBCC CHECKDB with repair options to fix corruption in a SQL database. You can try to restore the database from a healthy backup. Is because the repair option can result in data loss. Repairing Database with ‘REPAIR_ALLOW_DATA_LOSS’ before Restore: Restoring a database from the most recent backup is the first thing you should do before trying to repair the database with ‘REPAIR_ALLOW_DATA_LOSS’.You can try to hack-attach a damaged database, but it can be a time-consuming and painful experience. in SUSPECT or RECOVERY_PENDING mode), SQL Server will fail to attach that database until it is repaired. Detaching the Database: Detaching a corrupt SQL database while performing database recovery can further delay the recovery process and re-attaching the database may fail. Particularly, when you cannot run crash recovery.Rather you may end up with other problems, further damaging the database, without knowing what is going on behind the scenes. Restarting SQL Server: Do not restart SQL Server to try to fix database corruption.Shutting down the server may put the database in an inconsistent state while recovery is in progress. Shutting Down the SQL Server: A database goes into recovery mode when it becomes corrupt.When you detect corruption in a SQL Server database, make sure to avoid the following:
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