Res: [GENERAL] bytea size limit?

From: paulo matadr <saddoness(at)yahoo(dot)com(dot)br>
To: Kenneth Marshall <ktm(at)rice(dot)edu>, Grzegorz Ja??kiewicz <gryzman(at)gmail(dot)com>
Cc: pgsql-general(at)postgresql(dot)org, admin <pgsql-admin(at)postgresql(dot)org>
Subject: Res: [GENERAL] bytea size limit?
Date: 2009-01-21 15:02:06
Message-ID: 901365.77018.qm@web52506.mail.re2.yahoo.com
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My system have very large ram size, so its possible review postgresql.conf ?

________________________________
De: Kenneth Marshall <ktm(at)rice(dot)edu>
Para: Grzegorz Ja??kiewicz <gryzman(at)gmail(dot)com>
Cc: paulo matadr <saddoness(at)yahoo(dot)com(dot)br>; pgsql-general(at)postgresql(dot)org; admin <pgsql-admin(at)postgresql(dot)org>
Enviadas: Quarta-feira, 21 de Janeiro de 2009 11:06:23
Assunto: Re: [ADMIN] [GENERAL] bytea size limit?

On Wed, Jan 21, 2009 at 01:55:28PM +0000, Grzegorz Ja??kiewicz wrote:
> there's no real limit (its size is described with 32bit number, and
> that's the only limitation here).
> But you need to be aware, that content is sent over at once, so memory
> is the limit in your case.
>
> http://www.postgresql.org/docs/8.3/static/datatype-binary.html
>
> For such large objects, it might be actually better to store them
> separate as files, and just store file name.
>

The TOAST implementation however only allows 30-bits for the
size of the TOAST entry which caps the size at 2^30 or 1GB. I
agree that he could very well be limited also by the memory on
his system.

Cheers,
Ken

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