To find the table lock

Hi
When i try to update a able it is locked.
May i know how to find out by whom was the lock created.
Thanks in advance
Mary

No that's not possible, because Oracle doesn't keep track of all the individual locks. Oracle doesn't have a lock manager and they are not a scarce resource in Oracle.
There are two thing you can do, although both are probably not what you want:
1) Examine the table locks, and if there is only one on the table you are working with, you have a chance that the session you find is the one you are looking for. But this is only true when the lock is held for quite some time. Otherwise you risk the situation that the session you were interested in, has released the lock and a new session has a new lock on the table. So handle with care.
2) When your session is waiting for a lock, there will be a record in v$lock. Use a third session to examine which session is holding the lock.
Regards,
Rob.

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Handle: user12057782
Status Level: Newbie
Registered: Oct 13, 2009
Total Posts: 5
Total Questions: 4 (4 unresolved)
mark answered if helpful/correct
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To find the table lock

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