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多选题
Which two statements are true about the Automatic Diagnostic Repository (ADR)?() (Choose two.)
A

The ADR base keeps all diagnostic information in binary format

B

SQL*Plus provides the ADRI script, which can be used to work with ADR

C

The ADR can be used for problem diagnosis only when the database is open

D

The ADR can be disabled by settting the DIAGNOSTIC_DEST parameter to null

E

The ADR can be used for problem diagnosis even when the database instance is down

F

The ADR base is shared across multiple instances


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