Why I can not unlock the record when close a page?

I develop a jsp page as client,the jsp application use a business componment with statefull application module.i call a database rowset's lock function in jsp page to lock a record,now,after i close the jsp page without commit and rollback,the record is not unlocked,until i restart the oc4j application server.how can i unlock the record when close the page without commit and rollback?????

Li Ping:
If you lock a row in the course of a transaction, you cannot unlock the row until the end of transaction (either rollback or commit). DBMS doesn't allow this.
Alternatively, you can try to delay locking of the row. E.g., you can try using optimistic locking. Please see the Java Doc for oracle.jbo.Transaction if you're interested in optimistic locking.
Thanks.
Sung

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