Dba_dml_lock hang the session?

Question

frequently, the user session occurs the lock wait.... to check, i run the dba_dml_lock, after executing my session will get hang... i run the catblock.sql again, still problem, my oracle binary 9.2.0.6 in hp itanium 11.23v. any suggestion

Answer 1

please try the following queries
select sw.username “Waiting User”,bu.ussername “Locking User”,
     dw.username “Locking User”, dw.lock_type, dw.mode_held, dw.mode_requested,
from dba_Waiters dw, v$session sw, v$session bu
where dw.waiting_session = sw.sid
     and dw.holding_Session = bu.sid
select lpad(' ', decode(l.xidusn,0,3,0 )) || l.oracle_username,
o.owner,o.object_name, o.object_type
from v$locked_object l, dba_objects o
where l.object_id = o.object_id
order by o.object_id, 1 desc
And if they also hang
Best Regards
Krystian Zieja / mob