Multi User session Kill in Oracle

To kill the inactive users login in Oracle from any schema in a database.If any unwanted transactions were kept withput roll back it will block the buffer memory, then it leads to database block.Using this query we can find out the User and the machine number, so that we can kill the bolcking transaction.   

SELECT   SYS.v_$lock.SID, machine, program, object_name, logon_time, osuser
    FROM SYS.v_$lock, SYS.v_$session, all_objects
   WHERE SYS.v_$lock.SID = SYS.v_$session.SID
     AND SYS.v_$lock.id1 = all_objects.object_id
     AND SYS.v_$lock.TYPE = 'TM'
ORDER BY SYS.v_$lock.SID, machine, program