RE: When optimizer reevaluate SQL statement

[Walthour, Jon (GEAE, Compaq)]

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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


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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

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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
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