【多选题】
A The Automatic Diagnostic Repository (ADR) has a separate home directory for each instance of each Oracle product that is installed and uses it
B The ADR command-line utility (ADRCI)can package incident information to send to Oracle Support.
C The ADR can store metadata in an Oracle Database repository.
D Flashback commands help with repairing physical errors.
E The Data Recovery Advisor uses the ADR
F RMAN can always repair corrupt blocks
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