Re: Spd 19c adaptive statistics
Date: Wed, 6 Jan 2021 00:26:55 +0000
Message-ID: <BN6PR06MB2785379436164AA1ABE5B2BEE1D00_at_BN6PR06MB2785.namprd06.prod.outlook.com>
Still my question is
I know I can tell from dbms_xplan cutsor note section but is there a bulk way to check history on dba_hist_xxx views to expose the note section and see if it was ever used?
And I’m not able to find the answer there..
On Jan 5, 2021, at 7:06 PM, Mladen Gogala <gogala.mladen_at_gmail.com> wrote:
Tim Hall to the rescue:
https://oracle-base.com/articles/12c/sql-plan-directives-12cr1
There is also a good article in DBA hell:
http://dbaparadise.com/2018/03/what-are-sql-plan-directives/
And my favorite is Lodovico Caldera:
http://www.ludovicocaldara.net/dba/sql-plan-directives-problem/
Finally, there is a little known and infrequently visited site at https://support.oracle.com:
How to Identify Specific SQL Plan Directives In Use For A SQL Statement (Doc ID 2390551.1)
Happy New Year
On 1/5/21 6:32 PM, Moustafa Ahmed wrote:
I know I can tell from dbms_xplan cutsor note section but is there a bulk way to check history on dba_hist_xxx views to expose the note section and see if it was ever used?
--
Mladen Gogala
Database Consultant
http://mgogala.byethost5.com
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