多选题Which two statements are true about the Automatic Diagnostic Repository (ADR)?（）AThe ADR base keeps all diagnostic information in binary formatBSQL*Plus provides the ADRI script, which can be used to work with ADRCThe ADR can be used for problem diagnosis only when the database is openDThe ADR can be disabled by settting the DIAGNOSTIC_DEST parameter to nullEThe ADR can be used for problem diagnosis even when the database instance is downFThe ADR base is shared across multiple instances
多选题
Which two statements are true about the Automatic Diagnostic Repository (ADR)?（）
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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