Re: PG9.2.3. Query hanging: SELECT count(*) FROM pg_catalog.pg_class...

On Fri, Feb 15, 2013 at 07:01:20PM -0600, Ren Romero Benavides wrote:
- I can confirm it comes from pgpool, and is very weird , I guess the pgpool list
- would be a better fit.
- Cheers.

hmm, ok thanks I'll post there as well.

Also, if anyone else stumbles upon this, it only seems to happen with jruby.
I have standard ruby programs where this does not occur.

- On Friday, February 15, 2013 01:58:55 PM David Kerr wrote:
- > Howdy!
- >
- > This query is coming from PgPool I believe.
- >
- > SELECT count(*) FROM pg_catalog.pg_class AS c WHERE c.relname =
- > 'import_jobs' AND c.relpersistence = 'u'
- >
- > This is a very small database, like 10/15 tables, it's basically empty.
- > If i run this query manually, it comes back immediatly.
- > However according to this it's been running for about an hour.
- >
- > v3=# select now();
- > now
- > -------------------------------
- > 2013-02-15 21:49:34.470466+00
- > (1 row)
- >
- > -[ RECORD 5
- > ]----+---------------------------------------------------------------------
- > ------------------------------------ datid | 16389
- > datname | v3
- > pid | 13905
- > usesysid | 20415
- > usename | workling
- > application_name |
- > client_addr | 10.0.0.132
- > client_hostname |
- > client_port | 58009
- > backend_start | 2013-02-15 20:49:09.098768+00
- > xact_start | 2013-02-15 20:49:09.189625+00
- > query_start | 2013-02-15 20:49:09.198742+00
- > state_change | 2013-02-15 20:49:09.198743+00
- > waiting | f
- > state | active
- > query | SELECT count(*) FROM pg_catalog.pg_class AS c WHERE
- > c.relname = 'import_jobs' AND c.relpersistence = 'u'
- >
- > (I actually restarted the application and now there are 4 of these)
- >
- > Any idea why the query would hang like this?
- >
- > I don't see it waiting on locks or anything like that.
- >
- > any ideas?
- >
- > Thanks
- --
- René Romero Benavides @iCodeiExist @PgsqlMx
-
- Postgresql Tips en español para la comunidad de México e Hispanoamérica.
- http://postgresql.org.mx
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