How can I measure the performance of a PL/SQL code block in terms of execution time?

To measure the performance of a PL/SQL code block in terms of execution time, you can use the following methods:

1. Use the DBMS_UTILITY.GET_TIME function to measure the start and end time of the code block and then calculate the difference to determine the execution time.

2. Enable SQL trace for the session by setting the appropriate trace flags using the ALTER SESSION command. This will generate a trace file that includes detailed information about the execution of the PL/SQL code block, including timing information.

3. Use the AUTOTRACE feature in SQL*Plus or SQL Developer to generate an execution plan and statistics for the PL/SQL code block, including the elapsed time for each step of the execution.

By using these methods, you can accurately measure the performance of your PL/SQL code block in terms of execution time and identify any areas that may need optimization for improved efficiency.