The lock manager domain (also sometimes known simply as "lock manager") provides both locking and associated queuing facilities for CICS® resources. Before using these facilities, a resource must add a named lock for itself. This lock can then be requested as either exclusive or shared. If an exclusive lock is obtained, no other task may obtain the lock with that name; if a shared lock is obtained, multiple tasks may obtain that lock, and the exclusive lock with that name cannot be acquired.
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