Re: copy and postgresql.conf

thanks,

i'm using postgresql 8.0.3
there is no primary key and no index on my tables

regards

-----Message d'origine-----
De : pgsql-performance-owner(at)postgresql(dot)org
[mailto:pgsql-performance-owner(at)postgresql(dot)org]De la part de Albert
Cervera Areny
Envoyé : mardi 14 février 2006 12:38
À : pgsql-performance(at)postgresql(dot)org
Objet : Re: [PERFORM] copy and postgresql.conf

Hi William,
which PostgreSQL version are you using? Newer (8.0+) versions have some

important performance improvements for the COPY command.

Also, you'll notice significant improvements by creating primary & foreign

keys after the copy command. I think config tweaking can improve key and

index creation but I don't think you can improve the COPY command itself.

There are also many threads in this list commenting on this issue, you'll

find it easely in the archives.

A Dimarts 14 Febrer 2006 10:44, FERREIRA, William (VALTECH) va escriure:
> hi,
>
> i load data from files using copy method.
> Files contain between 2 and 7 millions of rows, spread on 5 tables.
>
> For loading all the data, it takes 40mn, and the same processing takes 17mn
> with Oracle. I think that this time can be improved by changing postgresql
> configuration file. But which parameters i need to manipulate and with
> which values ?
>
> Here are the specifications of my system :
> V250 architecture sun4u
> 2xCPU UltraSparc IIIi 1.28 GHz.
> 8 Go RAM.
>
> Regards.
>
> Will
>
>
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--

Albert Cervera Areny
Dept. Informàtica Sedifa, S.L.

Av. Can Bordoll, 149
08202 - Sabadell (Barcelona)
Tel. 93 715 51 11
Fax. 93 715 51 12

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