23、Which three are true about the Automatic Database Diagnostic Monitor (ADDM)?
A) Its findings are accessible only by using Oracle Enterprise Manager.
B) It improves database performance by automatically implementing Oracle‘s best practices.
C) It can assist the DBA in diagnosing database instance startup failures.
D) It can be used by executing the PL/SQL procedures in the DBMS_ADDM package.
E) It runs automatically after each Automatic Workload Repository snapshot is created.
F) It provides recommendations to improve database performance.
Answer:DEF
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原文：https://www.cnblogs.com/alice9313/p/9566360.html