CREATE EXTENSION pg_stat_monitor;
SELECT pg_stat_monitor_reset();
 pg_stat_monitor_reset 
-----------------------
 
(1 row)

SELECT * from pg_stat_monitor_settings where name='pg_stat_monitor.pgsm_max';
           name           | value | default_value |                                               description                                                | minimum | maximum | options | restart 
--------------------------+-------+---------------+----------------------------------------------------------------------------------------------------------+---------+---------+---------+---------
 pg_stat_monitor.pgsm_max | 1000  | 100           | Sets the maximum size of shared memory in (MB) used for statement's metadata tracked by pg_stat_monitor. |       1 |    1000 |         | yes
(1 row)

SELECT pg_stat_monitor_reset();
 pg_stat_monitor_reset 
-----------------------
 
(1 row)

SELECT * from pg_stat_monitor_settings where name='pg_stat_monitor.pgsm_max';
           name           | value | default_value |                                               description                                                | minimum | maximum | options | restart 
--------------------------+-------+---------------+----------------------------------------------------------------------------------------------------------+---------+---------+---------+---------
 pg_stat_monitor.pgsm_max | 500   | 100           | Sets the maximum size of shared memory in (MB) used for statement's metadata tracked by pg_stat_monitor. |       1 |    1000 |         | yes
(1 row)

SELECT pg_stat_monitor_reset();
 pg_stat_monitor_reset 
-----------------------
 
(1 row)

SELECT * from pg_stat_monitor_settings where name='pg_stat_monitor.pgsm_max';
           name           | value | default_value |                                               description                                                | minimum | maximum | options | restart 
--------------------------+-------+---------------+----------------------------------------------------------------------------------------------------------+---------+---------+---------+---------
 pg_stat_monitor.pgsm_max | 100   | 100           | Sets the maximum size of shared memory in (MB) used for statement's metadata tracked by pg_stat_monitor. |       1 |    1000 |         | yes
(1 row)

SELECT pg_stat_monitor_reset();
 pg_stat_monitor_reset 
-----------------------
 
(1 row)

SELECT * from pg_stat_monitor_settings where name='pg_stat_monitor.pgsm_max';
           name           | value | default_value |                                               description                                                | minimum | maximum | options | restart 
--------------------------+-------+---------------+----------------------------------------------------------------------------------------------------------+---------+---------+---------+---------
 pg_stat_monitor.pgsm_max | 10    | 100           | Sets the maximum size of shared memory in (MB) used for statement's metadata tracked by pg_stat_monitor. |       1 |    1000 |         | yes
(1 row)

SELECT pg_stat_monitor_reset();
 pg_stat_monitor_reset 
-----------------------
 
(1 row)

SELECT * from pg_stat_monitor_settings where name='pg_stat_monitor.pgsm_max';
           name           | value | default_value |                                               description                                                | minimum | maximum | options | restart 
--------------------------+-------+---------------+----------------------------------------------------------------------------------------------------------+---------+---------+---------+---------
 pg_stat_monitor.pgsm_max | 100   | 100           | Sets the maximum size of shared memory in (MB) used for statement's metadata tracked by pg_stat_monitor. |       1 |    1000 |         | yes
(1 row)

Drop extension pg_stat_monitor;