** outline change

I want to update a stored outline to change the join method. Is there a way it can be done from sqlplus instead of from OEM or tool. Using just unix sqlplus access. I looked at DBMS_OUTLN package but nothing in it. I do see tables like outln.ol$hints and the outline in it but I do not want to do a sqlplus update on it without knowing the full impact. I cannot change the query with hint etc since it is a indirect query. So I cannot give hint etc and exchange plan. Thanks for help. In TOAD : it says there is outline management but I cannot find it. Thanks       

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