| From: | Craig Ringer <craig(at)postnewspapers(dot)com(dot)au> |
|---|---|
| To: | sathiya psql <sathiya(dot)psql(at)gmail(dot)com> |
| Cc: | "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: SELECT 'DBD::Pg ping test' |
| Date: | 2008-04-23 08:28:05 |
| Message-ID: | 480EF315.3040605@postnewspapers.com.au |
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| Thread: | |
| Lists: | pgsql-performance |
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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