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A mechanism for managing concurrent access to shared data or resources by granting temporarily exclusive access to the processes requesting the lock.

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. My thoughts so far I've been thinking along the lines of doing locking by inserting a row into a "locking" table over a database link to the central database, while letting the unlock (update or … not sure if we can guarantee that the update or delete statement that removes a lock is the last statement to be replicated. Calling a remote PL/SQL procedure to do the checking and locking will at …
asked Feb 25 '13 by Roy