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query by dbms_sqltune between dbms_xplan are different why ?

edited Dec 16, 2016 6:10AM in SQL Performance (MOSC) 3 commentsAnswered

hello,

      I would like improve my query that I  retrieved by an AWR report then the query is 2cu5d2c0sfuaf

then I executed : ( see below )

then I see that :    the cost is different : 264K  (3)   and 905K

                             the time                    00:52:49    and  03:01:01

What is the procedure I can choose to improve my query and find a good explain plan ?

how is it possible to use a tkprok for my sql_id ?

I join my 3 log file.

thank you for your help.

Best regards

JP

1 - dbms_xplan by select * from table ( dbms_xplan.display_awr) ( I join a report ) then I see that I have :

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