Which three are true about the Automatic Database Diagnostic Monitor (ADDM)?
A)It improves database performance by automatically implementing Oracle ‘s best practices.
B)It can assist the DBA in diagnosing database instance startup failures.
C)It can be used by executing the PL/SQL procedures in the DBMS_ADDM package.
D)It runs automatically after each Automatic Workload Repository snapshot is created.
E)It provides recommendations to improve database performance.
F)Its findings are accessible only by using Oracle Enterprise Manager.
Answer: CDE
赵：
ADDM(Automatic Database Diagnostic Monitor)自动诊断监视工具，ADDM 通过检查和分析 AWR 获取的数据来判断 Oracle 数据库中可能的问题。