1, whether or not locked by another user query: SELECT s.sid, s.serial # FROM v $ locked_object lo, dba_objects ao, v $ session s WHERE ao.object_id = lo.object_id AND lo.session_id = s.sid; (handover to privileged account inquiries)
2, remove the lock: the ALTER System KILL session ' SID, Serial # ' ; for example: the ALTER System KILL session ' 45,278 '; (if the session is their own and insufficient permissions to shut down the database management tools and development tools release the session lock, simply direct point restart)