From: Stefan Kaltenbrunner <stefan@kaltenbrunner.cc>
To: Joshua D. Drake <jd@commandprompt.com>
Cc: Ziegelwanger, Silvio <Silvio.Ziegelwanger@fabasoft.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Monitoring Transaction Log size
Date: Wed, 17 Jan 2007 19:29:09 +0100
Message-ID: <45AE6AF5.4080306@kaltenbrunner.cc> (raw)
In-Reply-To: <45AE6376.7060606@commandprompt.com>
References: <B710F3299F04664DB6B37C258FDEEB9402A617@FABAMAIL.fabagl.fabasoft.com>
<45AE6376.7060606@commandprompt.com>
Joshua D. Drake wrote:
> Ziegelwanger, Silvio wrote:
>> Hi,
>>
>>
>>
>> how can I monitor the size of the transaction log files using SQL Statements?
>
> You can't. You would have to write a custom function to heck the size of
> the xlog directory.
wel in recent versions of pg it should be pretty easy to do that from
within SQL by using pg_ls_dir() and pg_stat_file().
maybe something(rough sketch) along the line of:
select sum((pg_stat_file('pg_xlog/' || file)).size) from
pg_ls_dir('pg_xlog') as file where file ~ '^[0-9A-F]';
might do the trick
Stefan
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To: pgsql-performance@postgresql.org
Cc: stefan@kaltenbrunner.cc, jd@commandprompt.com, Silvio.Ziegelwanger@fabasoft.com
Subject: Re: Monitoring Transaction Log size
In-Reply-To: <45AE6AF5.4080306@kaltenbrunner.cc>
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