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2018年的时候,OCP 11g考试题库大更新,052 053出现了很多新题,
2019年,11g即将停考的前期,Oracle又出现了一次大变动,12c出现了很多新题,比如062 063题库大更新
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52题、choose one
When is the UNDO_RETENTION parameter value ignored by a transaction?
A) when Flashback Database is enabled
B) when the undo tablespace is of a fixed size and retention guarantee is not enabled
C) when there are multiple undo tablespaces available in a database
D) when the data file of the undo tablespace is autoextensible
Answer:A
(解析:启用闪回数据库时,对undo_retention这个参数是没有任何关系,其它的答案都跟这个参数相关。)