RE: What's your opinion: ALL_ROWS vs FIRST_ROWS

Mike,

Check this out and let me know if this is helpful. Larry has already answered the main concern, but this paper may address some of the other hidden mines :)

http://www.geocities.com/john_sharmila/links.htm - click on the IOUG paper link.

John Kanagaraj
Oracle Applications DBA
DBSoft Inc
(W): 408-970-7002

What would you see if you were allowed to look back at your life at the end of your journey in this earth?

• The opinions and statements above are entirely my own and not those of my employer or clients **

> -----Original Message-----
> From: Armstead, Michael A [mailto:maa25681_at_GlaxoWellcome.com]
> Sent: Tuesday, October 29, 2002 1:14 PM
> To: Multiple recipients of list ORACLE-L
> Subject: What's your opinion: ALL_ROWS vs FIRST_ROWS
>
>
> We're moving from RBO to CBO.
>
> For those of you who use CBO, what mode do you use FIRST_ROWS
> or ALL_ROWS?
> And why?
>
> My thinking is if it's a database where most of the querying
> is done on
> small sets of records, then we may want to use FIRST_ROWS. On
> the other
> hand, if our database is used to generate sizable reports, we
> might use
> ALL_ROWS.
>
> I also understand that we can always change it per session (with alter
> session) and per query (with hints).
>
> Michael Armstead
> Principal Database Administrator, OCP-Certified
> World Wide Corporate IT Database Administration
> GlaxoSmithKline
>
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Armstead, Michael A
> INET: maa25681_at_GlaxoWellcome.com
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: John Kanagaraj
  INET: john.kanagaraj_at_hds.com

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