Oracle-L: RE: RE: tuning db_multiblock_read

From: Jamadagni, Rajendra <Rajendra.Jamadagni_at_espn.com>
Date: Fri, 02 May 2003 10:31:49 -0800
Message-ID: <F001.0058E41E.20030502103149@fatcity.com>

dbfmrc is mainly for FTS and GC traffic if you have RAC.

There is a script on Steve Adams's site http://www.ixora.com.au that will tell you what will be the optimal value for dbfmrc parameter.

Raj

Rajendra dot Jamadagni at nospamespn dot com All Views expressed in this email are strictly personal. QOTD: Any clod can have facts, having an opinion is an art !

-----Original Message-----
Sent: Friday, May 02, 2003 2:07 PM
To: Multiple recipients of list ORACLE-L

even if we use index lookups, that parameter should help. what are some standards for setting it?
>
> From: "Jamadagni, Rajendra" <Rajendra.Jamadagni_at_espn.com>
> Date: 2003/05/02 Fri PM 01:01:41 EDT
> To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
> Subject: RE: tuning db_multiblock_read_count
>
> I'd rather Change the code to not perform a FTS if possible.
>
> Raj
>

> ----
> Rajendra dot Jamadagni at nospamespn dot com
> All Views expressed in this email are strictly personal.
> QOTD: Any clod can have facts, having an opinion is an art !
>
>
> -----Original Message-----
> Sent: Friday, May 02, 2003 11:27 AM
> To: Multiple recipients of list ORACLE-L
>
>
> We have a default block size of 8k on a Solaris v5 in Oracle 8173 which is
> too small, but we cant change it now.
>
> Id like to tunin the db_multiblock_read_count which is set to 16 which I
> believe is the default. Any suggestions on what to set it to? Or where I
can
> find documentation on this?
>
> We do alot of large full table scans and that small block size is killing
> us.
>
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Author: Jamadagni, Rajendra
  INET: Rajendra.Jamadagni_at_espn.com

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Received on Fri May 02 2003 - 13:31:49 CDT

RE: RE: tuning db_multiblock_read_count