To answer this question, you need to understand the features and capabilities of different PL/SQL execution methods. Let's go through each option to understand why it does or does not help in executing multiple PL/SQL programs simultaneously.
Option A) Oracle Advanced Queuing - This option is incorrect because Oracle Advanced Queuing allows you to enqueue and dequeue messages, which can be used to execute PL/SQL programs asynchronously and in parallel. This feature enables multiple PL/SQL programs to be executed simultaneously.
Option B) DBMS_JOB - This option is incorrect because the DBMS_JOB package allows you to schedule and run PL/SQL programs as jobs. These jobs can be run concurrently, allowing for the execution of multiple PL/SQL programs simultaneously.
Option C) DBMS_SQL - This option is correct because the DBMS_SQL package is used for dynamic SQL execution. While it provides a way to execute SQL statements dynamically, it does not provide a direct mechanism for executing multiple PL/SQL programs simultaneously.
Option D) Pipelined Functions - This option is incorrect because pipelined functions allow you to process data in a streaming manner, which can be beneficial for executing multiple PL/SQL programs simultaneously. Pipelined functions enable the processing of data in parallel and can be used to execute multiple PL/SQL programs concurrently.
The correct answer is Option C) DBMS_SQL. This option does not help in executing multiple PL/SQL programs simultaneously because it is primarily used for dynamic SQL execution and does not provide a direct mechanism for concurrent execution of PL/SQL programs.