[Solved] Which of the following must be done before using pg_stat_statements to track slow queries? — Ans: Enable the extension and add it to shared_preload_libraries | PostgreSQL

PostgreSQL - Performance Tuning

Which of the following must be done before using pg_stat_statements to track slow queries?

ACreate a new database user with superuser rights

BEnable the extension and add it to shared_preload_libraries

CRestart the database without any configuration changes

DRun VACUUM FULL on all tables

Step-by-Step Solution

Solution:

Step 1: Know how to activate pg_stat_statements
You must enable the extension and add it to shared_preload_libraries in postgresql.conf.
Step 2: Understand the necessity of this step
This allows PostgreSQL to load the extension at server start and collect statistics.
Final Answer:
Enable the extension and add it to shared_preload_libraries -> Option B
Quick Check:
pg_stat_statements setup = Enable extension + shared_preload_libraries [OK]

Quick Trick: Add pg_stat_statements to shared_preload_libraries before restart [OK]

Common Mistakes:

Master "Performance Tuning" in PostgreSQL

9 interactive learning modes - each teaches the same concept differently

Which of the following must be done before using pg_stat_statements to track slow queries?