Whenever I inspect a system, there is a system view I prefer to inspect first before digging deeper. I am, of course, talking about pg_stat_activity. The idea behind this view is to give you a chance to figure out what is going on right now.
Here is how it works:
test=# \d pg_stat_activity View "pg_catalog.pg_stat_activity" Column | Type | Collation | Nullable | Default ------------------+--------------------------+-----------+----------+--------- datid | oid | | | datname | name | | | pid | integer | | | usesysid | oid | | | usename | name | | | application_name | text | | | client_addr | inet | | | client_hostname | text | | | client_port | integer | | | backend_start | timestamp with time zone | | | xact_start ...
