Hi pgsql-general,
I'm interested in writing a supervisory process that can insure worker processes are
running/spawn new ones if not. These workers will mainly be responsible for LISTENing to
the db, which is emitting triggered_change_notification s.
Is there any means to check a NOTIFY queue to see who or if anyone is LISTEN ing on it?
Links:
http://www.postgresql.org/docs/9.2/interactive/sql-notify.htmlhttp://www.postgresql.org/docs/9.2/interactive/tcn.html
Regards,
You can look in the pg_listener table. The relname is the Listen/notify code that you call and the listenerpid is the OS pid. You can see more details of that in the pg_stat_activity
Sim
I guess pg_listener table is deprecated and no longer exist in PG 9.0 onwards.