How to Force the Good Plan present in dba_hist_sql_plan for an SQL_ID

Hi Folks
Here i have a question on how to fix the query execution plan for which we are facing the problem. The current execution plan of the SQL ID is bad , but the execution plan in dba_hist_sql_plan or v$sql_plan is showing good one's.
So how to force the plan_hash_value present in dba_hist_sql_plan or v$sql_plan to the current sql. Where in we cannot try using any kind of hints in the SQL so my question here , is there any way to update manually to update the plan_hash_value for the SQL_ID so that it can use the execution plan which we want to force.
Regards,
Phani.

But my question is i have the good plan for the SQL_ID which is now running with the bad plan ( I am able to see the good plan in dba_hist_sql_plan view ) , my challenge here is how to force >the SQL_ID to take good plan PLAN_SQL_HASH_VALUE. Once the query is parsed and in memory I'm not aware of any way of changing the plan :(
A day later a similar situation came up with one of our clients. I'm still not aware of any way to manually change the execution plan of an already parsed SQL but suspect histograms and/or bind peeking may be a way to explain this phenemenon
Edited by: riedelme on Jun 18, 2010 6:13 AM

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