| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | neeraj kumar <neeru(dot)cse(at)gmail(dot)com> |
| Cc: | pgsql-admin(at)postgresql(dot)org, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: Query on pg_stat_activity table got stuck |
| Date: | 2019-05-06 21:33:06 |
| Message-ID: | 15877.1557178386@sss.pgh.pa.us |
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| Lists: | pgsql-admin pgsql-general |
neeraj kumar <neeru(dot)cse(at)gmail(dot)com> writes:
> We are using PG 10.6. We have one cron job that queries pg_stat_activity
> table to find out how many queries are running longer than X minutes and
> generate metrics.
> Query look like this :
> SELECT * FROM pg_stat_activity WHERE state='active'
> After some days, this query get stuck and doesn't finish. We tried to run
> this query manually and same result.
> We looked into pg_locks table and there this query is not blocked on any
> lock :
> https://justpaste.it/48rpe
Interesting. Can you get a stack trace to show where in the code it's
stuck?
https://wiki.postgresql.org/wiki/Generating_a_stack_trace_of_a_PostgreSQL_backend
regards, tom lane
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