OCP认证考试题库换了，052最新考题及答案整理-19

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我是靠谱客的博主虚幻睫毛膏，最近开发中收集的这篇文章主要介绍OCP认证考试题库换了，052最新考题及答案整理-19，觉得挺不错的，现在分享给大家，希望可以做个参考。

19、Which is true about invalid PL/SQL objects?

A) They are automatically recompiled against the new definition of a referenced object at the same time as the referenced object is modified.

B) They can be manually recompiled only by using SQL commands.

C) They are automatically recompiled against the new definition of a referenced object when they are called.

D) They must be manually recompiled before they can be used if a DDL is performed on a table that is referenced in the PL/SQL object.

Answer:D

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