Definicja exclusive lock (BC-ABA)

Lock that prevents other users from setting simultaneous locks on data locked in such in a way. The Open SQL statements INSERT, DELETE, MODIFY, and UPDATE, SELECT with the FOR UPDATE addition, and all corresponding Native SQL statements set database locks on the lines they address. As a SAP lock, a write lock is set by calling a lock function module using the appropriate parameters. This results in the lock mode of a lock object containing the corresponding value.

Write locks are marked with E (exclusive) in the lock management.