set lines 190
 
select substr(o.object_name, 1, 25) objeto,
       l.session_id session_id,
       l.oracle_username ora_user,
       l.os_user_name os_user
  from dba_objects o, v$locked_object l
 where l.object_id = o.object_id
   and o.object_name = 'OBJECT_NAME'
 order by 1, 3, 4