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Mention what is the difference between instance recovery and crash recovery?
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Answer / Ark Gopal
"Instance recovery is a process that brings an Oracle database instance back to a consistent state after it has been shut down abnormally or manually.nn1. Instance Recovery: This occurs when the instance is started with the NOMOUNT, MOUNT, or OPEN command.n2. Crash Recovery: This occurs automatically when an instance is started after a database crash, such as a power outage or hardware failure.n3. Crash recovery scans all online redo logs to ensure that all committed transactions have been applied to the database."
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