On 10/8/25 08:42, sud wrote:
Hi Experts,
It's postgres version 16. I have two questions on alerting as below.
1)If we want to have alerting on any node/instance that gets crashed :-
In other databases like Oracle the catalog Views like "GV$Instance" used
to give information on whether the instances are currently active/down
or not. But in postgres it seems all the pg_* views are instance
specific and are not showing information on the global/cluster level but
are restricted to instance level only. So is there any other way to
query the pg_* views to have alerts on the specific instance crash?
1) When you say instance do you mean database?
2) Not all system tables/views are database only.
For instance:
https://www.postgresql.org/docs/current/catalog-pg-database.html
https://www.postgresql.org/docs/current/catalog-pg-auth-members.html
https://www.postgresql.org/docs/current/catalog-pg-authid.html
https://www.postgresql.org/docs/current/view-pg-roles.html
2)Is there a way to fetch the data from pg_* view to highlight the
specific connection/session/sqls which is using high memory in postgres?
Appreciate your guidance.
Regards
Sud
--
Adrian Klaver
[email protected]
