RE: What's your opinion: ALL_ROWS vs. FIRST_ROWS

Michael - In Oracle9i it goes even further. Now there is FIRST_ROWS_1, FIRST_ROWS_10, and on up to _1000. Just thought you might want to take that in consideration.
Dennis Williams
DBA, 40%OCP
Lifetouch, Inc.
dwilliams_at_lifetouch.com

-----Original Message-----
Sent: Monday, November 04, 2002 1:04 PM
To: Multiple recipients of list ORACLE-L

John,

Your article was very good in describing RBO vs. CBO. I hope you don't mind me using it to help better describe why we're switching from RBO to CBO to my team.

On the other hand it didn't help me much in practical use of ALL_ROWS (CHOOSE) vs. FIRST_ROWS. I understand this was out of the scope of the paper.

Note: When leaving your web page I was notified that my IP address was captured. I didn't like that.

Michael Armstead
Principal Database Administrator, OCP-Certified World Wide Corporate IT Database Administration GlaxoSmithKline

> -----Original Message-----
> From: John Kanagaraj [SMTP:john.kanagaraj_at_hds.com]
> Sent: Thursday, October 31, 2002 12:54 PM
> To: Multiple recipients of list ORACLE-L
> Subject: 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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-- 
Author: Armstead, Michael A
  INET: maa25681_at_GlaxoWellcome.com

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Author: DENNIS WILLIAMS
  INET: DWILLIAMS_at_LIFETOUCH.COM

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