Subject: Re: Update is very slow on a bigger table
From: Dimitar Georgievski <dgeorgievski@horizonk.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-sql@postgresql.org
In-Reply-To: <21949.1082069503@sss.pgh.pa.us>
References: <200404151507.RAA03297@rodos> <1082063227.5415.217.camel@hklog>
	<21949.1082069503@sss.pgh.pa.us>
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Organization: Horizon Knwoledge
Message-Id: <1082126436.12136.46.camel@hklog>
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Date: Fri, 16 Apr 2004 10:40:36 -0400
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Tom,

Yes. it looks like there was some locking condition in the database. in
the meantime it disappeared and the updates run quickly. 

thanks for your help. this is the first time i'm working with PostgreSQL
and wasn't sure where to look for possible causes of the problem.

thanks,

dimitar

On Thu, 2004-04-15 at 18:51, Tom Lane wrote:
> Dimitar Georgievski <dgeorgievski@horizonk.com> writes:
> > the process under which the update is running reports among the usual
> > process data "UPDATE waiting".
> 
> I don't think the UPDATE is doing anything at all --- that ps output
> implies that it's waiting for some other backend to release an exclusive
> lock on the table, or an update lock on one of the rows to be updated.
> 
> The pg_locks view might help you determine who's the culprit.
> 
> 			regards, tom lane