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@;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: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB ORACLE-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). > -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: John Kanagaraj INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
