Re: Postgres Replaying WAL slowly

From: Andres Freund <andres(at)2ndquadrant(dot)com>
To: Jeff Frost <jeff(at)pgexperts(dot)com>
Cc: Matheus de Oliveira <matioli(dot)matheus(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Soni M <diptatapa(at)gmail(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, pgsql-performance <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Postgres Replaying WAL slowly
Date: 2014-06-30 20:15:23
Message-ID: 20140630201523.GV26930@awork2.anarazel.de
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On 2014-06-30 12:57:56 -0700, Jeff Frost wrote:
>
> On Jun 30, 2014, at 12:54 PM, Matheus de Oliveira <matioli(dot)matheus(at)gmail(dot)com> wrote:
>
> >
> > On Mon, Jun 30, 2014 at 4:42 PM, Jeff Frost <jeff(at)pgexperts(dot)com> wrote:
> > And if you go fishing in pg_class for any of the oids, you don't find anything:
> >
> > That is probably because you are connected in the wrong database. Once you connect to the database of interest, you don't even need to query pg_class, just cast relation attribute to regclass:
> >
> > SELECT relation::regclass, ...
> > FROM pg_locks WHERE database = (SELECT oid FROM pg_database WHERE datname = current_database());
> >
>
> Yah, i thought about that too, but verified I am in the correct DB. Just for clarity sake:

So these are probably relations created in uncommitted
transactions. Possibly ON COMMIT DROP temp tables?

Greetings,

Andres Freund

--
Andres Freund http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services

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