RE: Resetting execution plan
- From: Wolfgang Breitling <breitliw@xxxxxxxxxxxxx>
- To: Laimutis.Nedzinskas@xxxxxxxxxxxxx
- Date: Thu, 30 Nov 2006 09:05:16 -0700
At 08:36 AM 11/30/2006, Laimutis Nedzinskas wrote:
Ahhhr.
It sucks so much this empiric time-variant CBO thing. Out of always
bad and sometimes bad I prefer always bad.
Ask any electronics engineer what problem he prefers: the constant
one or no-no-but-yes-and-no-and-yes-and-no. I hope Oracle will
realize it one day.
Don't count on it. In my view it is only going to get worse in Oracle
11 when they activate the object cache hit statistics (it's already
in 10 but disabled by default) and other dynamic CBO features.
Regards
Wolfgang Breitling
Centrex Consulting Corporation
www.centrexcc.com
______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please visit http://www.messagelabs.com/email
______________________________________________________________________
- Follow-Ups:
- Re: Resetting execution plan
- From: Charles Schultz
- RE: Resetting execution plan
- From: Laimutis Nedzinskas
- References:
- RE: Resetting execution plan
- From: Laimutis Nedzinskas
Other related posts:
- » Resetting execution plan
- » RE: Resetting execution plan
- » Re: Resetting execution plan
- » RE: Resetting execution plan
- » RE: Resetting execution plan
- » Re: Resetting execution plan
- » RE: Resetting execution plan
Ahhhr.It sucks so much this empiric time-variant CBO thing. Out of always bad and sometimes bad I prefer always bad.
Ask any electronics engineer what problem he prefers: the constant one or no-no-but-yes-and-no-and-yes-and-no. I hope Oracle will realize it one day.
- Re: Resetting execution plan
- From: Charles Schultz
- RE: Resetting execution plan
- From: Laimutis Nedzinskas
- RE: Resetting execution plan
- From: Laimutis Nedzinskas