Stored outlines = plan stabilization
- From: "Fedock, John (KAM.RHQ)" <John.Fedock@xxxxxxxxxxxx>
- To: <oracledba@xxxxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 30 Jan 2004 14:25:44 -0500
Resending this to the new group ...
I have been trying to get stored outlines to work. It seems simple enough, but
it is working the exact opposite as I think it should. Anyone else use these?
I am on 8.1.7.4 on HP-UX 11.00
In a nutshell, I verify my query is using the correct explain plan. I grant
'create any outline' to the users.
Then, I do:
alter system set use_stored_outlines = true
ALTER SESSION SET CREATE_STORED_OUTLINES=true;
select * from edi_monitor_vw;
ALTER SESSION SET CREATE_STORED_OUTLINES=false;
I can see the outline in DBA_OUTLINES and also in outln.ol$
If I open another session and run the query, it is NOT using the correct
explain plan.
If I 'alter system set use_stored_outlines = false;' then the query uses the
correct plan.
I also noticed that outline_category in v$sql is NULL. Does this mean that
they outline is not being used? I assume not.
Thanks all,
John
John Fedock
"K" Line America, Inc.
www.kline.com
* john.fedock@xxxxxxxxxxxx
John Fedock
"K" Line America, Inc.
www.kline.com
* 804.327.4444
* john.fedock@xxxxxxxxxxxx
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