Oracle Error Message
ORA-44819: Execution of this WLM function is denied
Reason for the Error
Either a WLM plan was being loaded from another instance, or the strict order of the PL/SQL calls for loading WLM plan was not followed.
Solution
Check if another session is also concurrently trying to load a WLM plan. If that is not true, check the order in which you are making these PL/SQL calls to load your WLM plan.