How to check Locking sessions in oracle 10g

Hi,
I have tried to get locking sessions. i got the blocking session by using v$lock view.
Pls help how to get locking sessions.
Regards,
Venkat

Hi Venkat
Or just run this independent of database version
select a.sid blocker, 'is blocking the session ', b.sid blockee from v$lock a, v$lock b
where a.block =1 and b.request > 0 and a.id1=b.id1 and a.id2=b.id2;You can extend this query to find the username and machine (plus all other details) from v$session using the a.sid and b.sid from above
To find the blocking session_
SELECT S.SID, S.SQL_ID, S.USERNAME, S.MACHINE from
V$SESSION S WHERE S.SID = (SELECT blocker from
(select a.sid blocker, 'is blocking the session ', b.sid blockee from v$lock a, v$lock b
where a.block =1 and b.request > 0 and a.id1=b.id1 and a.id2=b.id2
*_To find the blocked session_*SELECT S.SID, S.SQL_ID, S.USERNAME, S.MACHINE from
V$SESSION S WHERE S.SID = (SELECT blockee from
(select a.sid blocker, 'is blocking the session ', b.sid blockee from v$lock a, v$lock b
where a.block =1 and b.request > 0 and a.id1=b.id1 and a.id2=b.id2
Edited : Added blocker and blockee code

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