Hello. I have found that, the following sql is very helpful in finding out the historical (What is in AWR) plan of a given SQL_ID. select * from table (sys.dbms_xplan.display_awr('&Your_SQL_ID')) ; But so far I could not figure out, how I can figure out WHEN this plan was in effect. Is there a way, I can corelate this plan to Sysdate or in other words, find out when this plan was in effect? Thanks for your insight, Shiva