1. Include the below lines in postgrsql.conf file located in <Data DIRECTORY>:
shared_preload_libraries = 'pg_stat_statements'
pg_stat_statements.track = all
2. Execute the below commands in psql shell:
CREATE EXTENSION pg_stat_statements;
3. Restart the PostgreSQL server.
After the PostgreSQL monitor gets added in Applications Manager, poll the monitor to obtain the data for 'Top Query By CPU' table.