From: Lee Azzarello <lee@dropio.com>
To: pgsql-admin@postgresql.org
Subject: Re: Question to transaction ID wraparound
Date: Thu, 26 Feb 2009 10:15:00 -0500
Message-ID: <16b031c0902260715k3dad5765te222578a0cdab169@mail.gmail.com> (raw)
In-Reply-To: <93739F94E0F3BA43AD72423E2482341AE064B7@sw-rz010.gsf.de>
References: <AcmXMKWfyPnyVS9VS9eO7pbRKbfVIw==>
<93739F94E0F3BA43AD72423E2482341AE064B7@sw-rz010.gsf.de>
On Wed, Feb 25, 2009 at 5:05 AM, Lentes, Bernd
<bernd.lentes@helmholtz-muenchen.de> wrote:
> Hello ML,
>
> I'm very new to Postgres.
> In the log, i got messages concerning transaction ID wraparound.
> I red the documentation and made a vaccum on that database.
> In the documentation i also found the hint to look in the database with
> "SELECT datname, age(datfrozenxid) FROM pg_database;", which i did.
> I did the command several times in a few seconds, and this number is growing very quickly,
> although i'm not expecting transactions in the database.
> Sometimes the number grows by 5 in one second.
> I'm also astonished about the fact that all databases grow by the same amount.
> Do you have any explanations for this behaviour ?
> Why are the numbers growing so quickly ?
What kind of work load is on the database?
How frequent are UPDATE/INSERT/DELETE statements called by that workload?
If you don't already have the answer to these questions, I would
recommend a reporting tool like pgfouine to get them easily.
-lee
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To: pgsql-admin@postgresql.org
Cc: lee@dropio.com
Subject: Re: Question to transaction ID wraparound
In-Reply-To: <16b031c0902260715k3dad5765te222578a0cdab169@mail.gmail.com>
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