OCP2018年新题库，052最新考题及答案整理-50题

时间：2018-07-27 来源：

OCP认证考试的题库变了很多，之前052的考题全都不能用了，而且这次oracle的调整到现在还没有稳定下来，这里收集整理了一些052考试新题，希望对大家通过OCP有帮助。

50、Examine these SQL statements and their output:

A. Inactive undo will never be retained for more than 15 minutes.

B. The undo tablespace can grow automatically if there is not enough space to retain active undo.

C. Inactive undo will be retained as long as possible within the limits of the current size of the undo tablespace.

D. Inactive undo will always be retained for at least 15 minutes.

E. Active undo will be retained as long as needed by transactions.

Correct Answer: BE

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