Which two are true about instance recovery for a database that is open in read write mode?
(Choose two.)

• A.Only the CURRENT REDO log group is required to perform instance recovery.
• B.It is always performed when opening a database.
• C.It is guaranteed to complete within fast_start_mttr_target number of seconds.
• D.The database opens after the roll forward phase of instance recovery has completed.
• E.No users can log on until instance recovery has completed.
• F.It always occurs during instance startup performed immediately after a SHUTDOWN ABORT.

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