| 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: When optimizer reevaluate SQL statement
!! Please do not post Off Topic to this List !!
Thanks, Chris. I've learned something.
Jon Walthour
-----Original Message-----
Sent: Friday, September 14, 2001 1:56 PM
To: Multiple recipients of list ORACLE-L
!! Please do not post Off Topic to this List !!
If the Oracle executing user is different, the execution plan will be different due to possibility of different objects and security.
Different sessions under the same user can share using bind variables.
"Do not criticize someone until you walked a mile in their shoes, that way when you criticize them, you are a mile a way and have their shoes."
Christopher R. Spence
Oracle DBA
Phone: (978) 322-5744
Fax: (707) 885-2275
Fuelspot
73 Princeton Street
North, Chelmsford 01863
-----Original Message-----
Sent: Friday, September 14, 2001 12:25 PM
To: Multiple recipients of list ORACLE-L
!! Please do not post Off Topic to this List !!
Chris:
> If you are executing it under a different user the statement will be reparsed.
I'm puzzled. I always thought that different users submitting the identical SQL statement would use the same plan and not need to be reparsed. I understood that to be part of the reasoning behind bind variables and the big advantage of cursor sharing. Please explain.
Jon Walthour
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Walthour, Jon (GEAE, Compaq)
INET: Jon.walthour_at_ae.ge.com
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: ListGuru_at_fatcity.com (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).
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: ListGuru_at_fatcity.com (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).
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: ListGuru_at_fatcity.com (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 Fri Sep 14 2001 - 13:31:56 CDT
 |
 |