From: cgallant@gmail.com
To: pgsql-performance@postgresql.org
Subject: Re: 8.3rc1 Out of memory when performing update
Date: Fri, 25 Jan 2008 13:32:46 -0500
Message-ID: <20080125183246.GB32623@soleauthority.ca> (raw)
In-Reply-To: <20080124231433.2f312549@pmanson>
References: <F0238EBA67824444BC1CB4700960CB480482B525@dmpeints002.isotach.com>
<20080124231433.2f312549@pmanson>
>
> > A simple update query, over roughly 17 million rows, populating a
> > newly added column in a table, resulted in an out of memory error
> > when the process memory usage reached 2GB. Could this be due to a
> > poor choice of some configuration parameter, or is there a limit on
> > how many rows I can update in a single statement?
> >
>
> I believe that it is plataform problem. Because on *nix this limit
> don't occur. But I don't specialist Windows.
On most Windows Servers(except for database edition and a few other
variants), 2Gb is the most you can address to a single
process without booting the machine with a special parameter called \3G
which will allow for allocating up to 3Gb per process. That is the
limit unless you get special versions of windows server 2003 as far as I
know. If you do a google search on \3G with windows you will find what
I am refering too.
Hope that helps a bit.
Cheers,
---
Curtis Gallant
cgallant@gmail.com
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To: pgsql-performance@postgresql.org
Cc: cgallant@gmail.com
Subject: Re: 8.3rc1 Out of memory when performing update
In-Reply-To: <20080125183246.GB32623@soleauthority.ca>
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