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OCP认证052考试最新题库及答案整理-46

原创 Oracle 作者:alice9313 时间:2018-09-12 10:20:56 0 删除 编辑

46、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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