OCP换题库了，最新052考试题库及答案整理-46

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

北京CUUG整理，转载请注明，OCP讨论群：569933648/836361015