From: Craig Ringer <craig@postnewspapers.com.au>
To: sathiya psql <sathiya.psql@gmail.com>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: SELECT 'DBD::Pg ping test'
Date: Wed, 23 Apr 2008 16:28:05 +0800
Message-ID: <480EF315.3040605@postnewspapers.com.au> (raw)
In-Reply-To: <f966c2ee0804230019x482f6312q35117a336a4f2d67@mail.gmail.com>
References: <f966c2ee0804230019x482f6312q35117a336a4f2d67@mail.gmail.com>
sathiya psql wrote:
> Hi All,
>
> This query is being executed nearly a million times....
> SELECT 'DBD::Pg ping test'
>
> Why this is being executed ? What is the use ?
A client is sending a query to the server solely to see if the server
responds.
DBD::Pg is the Perl database driver for PostgreSQL. Presumably the
application using that driver has some sort of keepalive or database
connectivity check enabled, so it's periodically issuing these queries.
--
Craig Ringer
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To: pgsql-performance@postgresql.org
Cc: craig@postnewspapers.com.au, sathiya.psql@gmail.com
Subject: Re: SELECT 'DBD::Pg ping test'
In-Reply-To: <480EF315.3040605@postnewspapers.com.au>
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