OCP 052考试换题库后的新题整理-第31题

文章来源：更新时间:2018/7/19 14:06:03

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OCP考试换题库了，Oracle这种突然的变化让很多考生不敢报考，而且052 053还在不断加入新题，大大加大了考试的难度，这里整理了一些052的新题，希望对大家有帮助。

31、Which three are true about undo segments and undo tablespaces in the same database and instance?

A. Multiple transactions run by the same Oracle user can share a single undo segment.

B. Multiple transactions run by different Oracle users can share a single undo segment.

C. A serial transaction can use multiple undo segments.

D. Undo segments are automatically dropped shortly after transactions that use them commit.

E. A new undo segment is always created for each transaction.

F. A database can have multiple undo tablespaces.

Correct Answer: ABF

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