Logging Record Locks in 9i

hi everyone,
We have a 9i database that sometimes experiences several times per day where the user tries to save a work order only to have to app crash with a 'record in use' error.
I searched \bdump\alert to see if I could find any loging for locks - didn't find any.
Are severe record locks - severe enough to cause an update to fail - logged to a file? looking for a historical "hard-copy" because when I've looked at dba_blockers, v$locked_object etc I don't see any at that time.
Thanks,
John

From an Oracle perspective, there is no such thing as a row-level lock that would cause an application to crash. I'm also not aware of any Oracle error with the words "record in use" in it, so this is probably an application-specific error and an application-specific crash. If this is a custom app, you probably want to modify the code so that it doesn't crash when a row is locked.
Logging every lock of a row would be a substantial burden on scalability, so I don't believe there is any option to do this. If the application waits long enough to acquire the lock, you may be able to set up a job to query DBA_BLOCKERS/ DBA_WAITERS frequently enough to catch the error. But if the application isn't waiting for the lock, that's probably not going to work.
Justin

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SQL>                                                                  You know your session id, so you know who is blocking you.

Logging Record Locks in 9i

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