Re: Spd 19c adaptive statistics

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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