Oracle Message ORA-07460 - cannot set the RESOURCE_MANAGER_PLAN parameter

ERRORcannot set the RESOURCE_MANAGER_PLAN parameter
CAUSEAn attempt was made to internally set the RESOURCE_MANAGER_PLAN parameter, however, this failed because the current RESOURCE_MANAGER_PLAN has the FORCE prefix.
ACTIONRemove the FORCE prefix from the RESOURCE_MANAGER_PLAN parameter.