| Oracle FAQ | Your Portal to the Oracle Knowledge Grid | |
 |
 | |||
| Oracle FAQ | Your Portal to the Oracle Knowledge Grid | |
|
| |||
Home -> Community -> Mailing Lists -> Oracle-L -> RE: Query on Dual
http://www.ixora.com.au/scripts/cache.htm
replace_dual.sql
In some cases the data block for SYS.DUAL can be a hot block in cache. This
script replaces the SYS.DUAL table with a view onto X$DUAL, thereby
eliminating the cache access entirely.
Please note: This is not a normal, supported procedure. So do not do it on a
production system, unless you have discussed the matter fully with Oracle
Support beforehand.
-----Original Message-----
Can anyone tell me the performance issues related to the excessive usage of
the DUAL table in pl/sql procedures?
I remember reading an article about this ( I dont remember if it was in
ASKTOM site ) wherein it was told that excessive usage of DUAL comes with a
cost and there was a suggestion in that to create a view on the system table
X$DUAL..
If anybody has a link to that please send it to me.
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Jacques Kilchoer
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). Received on Wed Jun 11 2003 - 13:30:12 CDT
 |
 |