Re: Postgres insert performance and storage requirement compared to Oracle

From: Ray Stell <stellr(at)cns(dot)vt(dot)edu>
To: Divakar Singh <dpsmails(at)yahoo(dot)com>
Cc: "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Postgres insert performance and storage requirement compared to Oracle
Date: 2010-10-25 19:21:57
Message-ID: 20101025192157.GB14620@cns.vt.edu
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On Mon, Oct 25, 2010 at 11:39:30AM -0700, Divakar Singh wrote:
> Thanks Ray,
> Already seen that, but it does not tell about storage requirement compared to
> Oracle. I find it takes 2 times space than oracle.
>
>
> Best Regards,
> Divakar
> ________________________________
> From: Ray Stell <stellr(at)cns(dot)vt(dot)edu>
> To: Divakar Singh <dpsmails(at)yahoo(dot)com>
> Sent: Tue, October 26, 2010 12:05:23 AM
> Subject: Re: [PERFORM] Postgres insert performance and storage requirement
> compared to Oracle
>
> On Mon, Oct 25, 2010 at 11:12:40AM -0700, Divakar Singh wrote:
> >
> > 2. What are the average storage requirements of postgres compared to Oracle? I
>
> > inserted upto 1 million records. The storage requirement of postgreSQL is
> >almost
> >
> > double than that of Oracle.
>
> there's a fine manual:
> http://www.postgresql.org/docs/9.0/interactive/storage.html

Maybe compare to oracle's storage documentation:

http://download.oracle.com/docs/cd/E11882_01/server.112/e17118/sql_elements001.htm#SQLRF30020
http://download.oracle.com/docs/cd/E11882_01/server.112/e17120/schema007.htm#ADMIN11622

I don't believe for a second the byte count is double in pg, but that's just
a religious expression, I've never counted.

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