38、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

本文介绍了Oracle数据库中自动数据库诊断监视器(ADDM)的功能特性。ADDM可以在每次自动工作负载资料库快照创建后自动运行,通过执行DBMS_ADDM包中的PL/SQL过程来使用ADDM,它为改善数据库性能提供了推荐建议。
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