Date: Mon, 25 Oct 2010 15:21:57 -0400
From: Ray Stell <stellr@cns.vt.edu>
To: Divakar Singh <dpsmails@yahoo.com>
Cc: "pgsql-performance@postgresql.org" <pgsql-performance@postgresql.org>
Subject: Re: Postgres insert performance and storage requirement
	compared to Oracle
Message-ID: <20101025192157.GB14620@cns.vt.edu>
References: <402913.53404.qm@web65405.mail.ac4.yahoo.com>
	<20101025183523.GA14620@cns.vt.edu>
	<925479.22016.qm@web65411.mail.ac4.yahoo.com>
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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@cns.vt.edu>
> To: Divakar Singh <dpsmails@yahoo.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.