OCP-V13-676

OCP-V13-676_第1张图片

677.What are the prerequisites for performing flashback transactions? (Choose all that apply) 闪回事务的先决条件是什么

A.Supplemental log must be enabled 允许补充日志

B.Supplemental log must be enabled for the primary key 允许主键补充日志

C.Undo retention guarantee for the database must be configured

D.EXECUTE permission on the DBMS_FLASHBACK package must be granted to the user必须授予用户dbms_flashback包的执行权限

Answer: ABD

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