1.
select object_name, s.sid, s.serial#, p.spid
from v$locked_object l, dba_objects o, v$session s, v$process p
where l.object_id = o.object_id and l.session_id = s.sid and s.paddr = p.addr;
2.
alter system kill session `'sid,serial#';http://stackoverflow.com/questions/3075738/ora-00054-resource-busy-and-acquire-with-nowait-specified