From: | Andreas Kretschmer <akretschmer(at)spamfence(dot)net> |
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To: | pgsql-performance(at)postgresql(dot)org |
Subject: | Re: really quick multiple inserts can use COPY? |
Date: | 2006-12-11 16:57:32 |
Message-ID: | 20061211165731.GA11970@KanotixBox |
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Lists: | pgsql-performance |
Jens Schipkowski <jens(dot)schipkowski(at)apus(dot)co(dot)at> schrieb:
> Hello!
>
> In our JAVA application we do multiple inserts to a table by data from a
> Hash Map. Due to poor database access implemention - done by another
> company (we got the job to enhance the software) - we cannot use prepared
> statements. (We are not allowed to change code at database access!)
> First, we tried to fire one INSERT statement per record to insert. This
> costs 3 ms per row which is to slow because normally we insert 10.000
> records which results in 30.000 ms just for inserts.
Can you change this from INSERT-Statements to COPY? Copy is *much*
faster than INSERT.
If no, do you using all INSERTs in one transaction? I believe, a 'BEGIN'
and a 'COMMIT' around all INSERTs may increase the speed.
Andreas
--
Really, I'm not out to destroy Microsoft. That will just be a completely
unintentional side effect. (Linus Torvalds)
"If I was god, I would recompile penguin with --enable-fly." (unknow)
Kaufbach, Saxony, Germany, Europe. N 51.05082°, E 13.56889°
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