I am the one that started it. I saw that each select from dual cost about 4-5 buffer gets. Define view on x$dual and select from that view, no buffer gets.
Yechiel Adar Mehish ----- Original Message ----- To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]> Sent: Thursday, May 30, 2002 7:48 PM > Dan: > The discussion was recent, but I cannot find reference to it. > I kinda thought Kirti was involved in the thread, and it had something to do > with creating an x$dual table as a workround to hammering dual. > > Sorry I can't remember any more . . . > > Barb > > > > ---------- > > From: Fink, Dan[SMTP:[EMAIL PROTECTED]] > > Reply To: [EMAIL PROTECTED] > > Sent: Thursday, May 30, 2002 10:23 AM > > To: Multiple recipients of list ORACLE-L > > Subject: Using DUAL > > > > The developers here have a fondness for using DUAL for simple operations > > (select count(*) from dual is executed 10000+ times per day). I recall a > > passing comment somewhere/sometime that there are performance issues with > > accessing DUAL. Of course, now that I need to provide some information to > > the developers, I can't recall the comment or find documentation. > > > > Any assistance is greatly appreciated. > > > > Daniel W. Fink > > > > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: Baker, Barbara > INET: [EMAIL PROTECTED] > > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 > San Diego, California -- Public Internet access / Mailing Lists > -------------------------------------------------------------------- > 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: Yechiel Adar INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- 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).
