Re: Block size : what is the gain ?

Hi Stephane,

If you're using a conventional file system on AIX, you can expect a reduction in performance by moving to 16K from your already imperfect 8K.

See Steve Adam's notes why the DB block size should = the file system buffer size (www.ixora.com).

And that's *4K* on AIX.

Cheers

Richard
----- Original Message -----
To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Wednesday, October 22, 2003 4:59 AM

> Hi,
>
> All our DB have an 8k block size (8172/aix).
> Even the reporting/dss database where data is accessed mainly by full
scan.
>
> Can we quantify the gain in % of switching from an 8k to 16k block size
from
> a performance point of view ?
>
>
>
> Stephane Paquette
> Administrateur de bases de donnees
> Database Administrator
> Standard Life
> www.standardlife.ca
> Tel. (514) 499-7999 7470 and (514) 925-7187
> stephane.paquette_at_standardlife.ca

<mailto:stephane.paquette_at_standardlife.ca>
>
>
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: Stephane Paquette
> INET: stephane.paquette_at_standardlife.ca
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Richard Foote
  INET: richard.foote_at_bigpond.com

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