I want to redesign the lock of an unlock policy for tables (or row of them) in a multithreading environment. What...
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needs a lock? How do I lock them (update, full lock)? How do I prevent deadlocking? Oracle will handle your locking for you. You do not have to code anything. Oracle's policy is that writers only block writers, they do not block readers. I would highly suggest that you get a copy of Tom Kyte's "Expert one-on-one Oracle book". It contains good examples of how transaction processing occurs in the Oracle database.
You could use the DBMS_LOCK package to implement your own locking, but this does not lock any tables. It only locks sections of code in your application. So I doubt that you want to use this...
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