Re: Prepared statements, parameters and logging

From: Dave Cramer <pg(at)fastcrypt(dot)com>
To: Csaba Nagy <nagy(at)ecircle-ag(dot)com>
Cc: Postgres JDBC <pgsql-jdbc(at)postgresql(dot)org>
Subject: Re: Prepared statements, parameters and logging
Date: 2007-06-25 10:54:04
Message-ID: 6A182763-97EC-43C9-BD13-EE5375A83AC2@fastcrypt.com
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Csaba,

They will all be prepared. The threshold is whether to re-use the
prepared statement.

What you are seeing is the use of unnamed statements.

If you really want them turned off use protocolVersion=2

Dave
On 25-Jun-07, at 6:47 AM, Csaba Nagy wrote:

> Hi all,
>
> I have a system (postgres 8.1) which was until now running with JDBC
> parameter prepareThreshold=1 so it is always using server side
> prepares
> (we had some trouble in the past if not setting it so). Now we are
> prepared to set this to 0, meaning no server side prepares by
> default...
>
> The problem is that I did the switch and I still see queries which are
> presumably server side prepared (marked with <unnamed> in the log - I
> enabled reporting queries longer than 2 seconds)...
>
> The question is how do I tell for sure from the DB log if a query is
> server side prepared or not ? I was presuming that <unnamed> in the
> log
> means server side prepare, some name like 'C_xyz' means client side
> prepared statement. Is this correct ?
>
> Thanks,
> Csaba.
>
>
>
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