From: Heikki Linnakangas <heikki@enterprisedb.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: femski <hypertree@yahoo.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Postgres batch write very slow - what to do
Date: Tue, 13 Mar 2007 15:56:11 +0000
Message-ID: <45F6C99B.1080507@enterprisedb.com> (raw)
In-Reply-To: <2563.1173799749@sss.pgh.pa.us>
References: <9452092.post@talk.nabble.com>
<45F685B7.5040001@enterprisedb.com>
<9453712.post@talk.nabble.com>
<2563.1173799749@sss.pgh.pa.us>
Tom Lane wrote:
> It sounds like you're incurring a network round trip for each row, which
> will be expensive even for a co-located application. Perhaps Oracle's
> JDBC driver is smart enough to avoid that. I'm not sure what tricks are
> available for bulk loading with our JDBC driver --- the page Heikki
> mentioned explains things from a server perspective but I dunno how that
> translates into JDBC. The folks who hang out on pgsql-jdbc could
> probably give you some tips.
OP said he's using addBatch/executeBatch with a batch size of 100. The
JDBC driver sends the whole batch before waiting for responses.
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
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To: pgsql-performance@postgresql.org
Cc: heikki@enterprisedb.com, tgl@sss.pgh.pa.us, hypertree@yahoo.com
Subject: Re: Postgres batch write very slow - what to do
In-Reply-To: <45F6C99B.1080507@enterprisedb.com>
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