Local procedure A calls remote procedure B. Procedure B was compiled at 8 A.M. Procedure A was modified and recompiled at 9 A.M. Remote procedure B was later modified and recompiled at 11 A.M. The dependency mode is set to TIMESTAMP. What happens when procedure A is invoked at 1 P.M?

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  1. There is no affect on procedure A and it runs successfully

  2. Procedure B is invalidated and recompiles when invoked.

  3. Procedure A is invalidated and recompiles for the first time it is invoked.

  4. Procedure A is invalidated and recompiles for the second time it is invoked

Show answer
Correct Option: D

AI Explanation

To answer this question, we need to understand how the TIMESTAMP dependency mode works.

When the dependency mode is set to TIMESTAMP, it means that procedures are invalidated and recompiled if the timestamp of the remote procedure they call is newer than their own timestamp.

In this scenario:

  • Procedure B was compiled at 8 A.M.
  • Procedure A was modified and recompiled at 9 A.M.
  • Procedure B was later modified and recompiled at 11 A.M.

Since Procedure A was compiled before Procedure B's second modification at 11 A.M., the timestamp of Procedure B is newer than the timestamp of Procedure A. Therefore, when Procedure A is invoked at 1 P.M., it will be invalidated and recompiled for the second time.

So, the correct answer is:

D. Procedure A is invalidated and recompiles for the second time it is invoked.

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