Re: Block size : what is the gain ?

[Richard Foote]

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" <[EMAIL PROTECTED]>
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
> [EMAIL PROTECTED]

>
>
>
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> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: Stephane Paquette
>   INET: [EMAIL PROTECTED]
>
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Author: Richard Foote
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Block size : what is the gain ?

[Stephane Paquette]

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
[EMAIL PROTECTED] 



-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Stephane Paquette
  INET: [EMAIL PROTECTED]

Fat City Network Services-- 858-538-5051 http://www.fatcity.com
San Diego, California-- Mailing list and web hosting services
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