From: Nimesh Satam <nimesh.zedo@gmail.com>
To: glynastill@yahoo.co.uk
Cc: pgsql-performance@postgresql.org, Nimesh Satam <nimesh.satam@gmail.com>
Subject: Re: Prepared statement does not exist
Date: Fri, 20 Mar 2009 14:33:58 +0530
Message-ID: <965aa3ed0903200203w75bd3b96ofdf5b080dbbdd4c2@mail.gmail.com> (raw)
In-Reply-To: <407434.55939.qm@web23607.mail.ird.yahoo.com>
References: <965aa3ed0903190432i77ca9b39v733663f92ef3e2d0@mail.gmail.com>
<407434.55939.qm@web23607.mail.ird.yahoo.com>
Glyn Astill,
Thank for your reply. But can you confirm on this? As what I see from
the logs, its pgpool which is trying to deallocate the prepared
statement and not the application. The application just disconnects
and not tyring to use the same connection.
Regards,
Nimesh.
On Thu, Mar 19, 2009 at 5:07 PM, Glyn Astill <glynastill@yahoo.co.uk> wrote:
>
>
>
>
> --- On Thu, 19/3/09, Nimesh Satam <nimesh.zedo@gmail.com> wrote:
> >
> > We are receving the following error in the postgres
> > database logs:
> >
> > 2009-03-19 02:14:20 PDT [2547]: [79-1] LOG: duration:
> > 0.039 ms statement:
> > RESET ALL
> > 2009-03-19 02:14:20 PDT [2547]: [80-1] LOG: duration:
> > 0.027 ms statement:
> > SET SESSION AUTHORIZATION DEFAULT
> > 2009-03-19 02:14:20 PDT [2547]: [81-1] ERROR: prepared
> > statement "S_1" does
> > not exist
> > 2009-03-19 02:14:20 PDT [2547]: [82-1] STATEMENT:
> > DEALLOCATE "S_1"
> > 2009-03-19 02:14:20 PDT [2547]: [83-1] ERROR: prepared
> > statement "S_4" does
> > not exist
> > 2009-03-19 02:14:20 PDT [2547]: [84-1] STATEMENT:
> > DEALLOCATE "S_4"
> >
> > We receive this errors when we start connecting the java
> > application
> > thorugh pgpool. What causes this problem and how can it be
> > avoided?
>
> Looks like your app is dissconnecting from pgpool which is causing pgpool
> to send the RESET ALL, this will deallocate the prepared statement. Then the
> app is reconnecting to pgpool again and expecting the prepared statement to
> still be available, which it will not be.
>
>
>
>
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To: pgsql-performance@postgresql.org
Cc: nimesh.zedo@gmail.com, glynastill@yahoo.co.uk, nimesh.satam@gmail.com
Subject: Re: Prepared statement does not exist
In-Reply-To: <965aa3ed0903200203w75bd3b96ofdf5b080dbbdd4c2@mail.gmail.com>
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