Re: batch inserts are "slow"
От | Steve Wampler |
---|---|
Тема | Re: batch inserts are "slow" |
Дата | |
Msg-id | 4277C322.2010901@noao.edu обсуждение исходный текст |
Ответ на | Re: batch inserts are "slow" (Tim Terlegård <tim@se.linux.org>) |
Список | pgsql-performance |
Tim Terlegård wrote: >> >>Just as on Oracle you would use SQL*Loader for this application, you >>should use the COPY syntax for PostgreSQL. You will find it a lot >>faster. I have used it by building the input files and executing >>'psql' with a COPY command, and also by using it with a subprocess, >>both are quite effective. > > > I tried this now. Now it's down to 0.45 seconds. It feels a bit hacky to > run /usr/bin/psql from java, but it sure works. Thanks for the hint! There was a patch against 7.4 that provided direct JDBC access to PostgreSQL's COPY. (I have it installed here and *love* it - it gives outstanding performance.) However, it hasn't made into an official release yet. I don't know why, perhaps there's a problem yet to be solved with it ('works for me', though)? Is this still on the board? I won't upgrade past 7.4 without it. -- Steve Wampler -- swampler@noao.edu The gods that smiled on your birth are now laughing out loud.
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