Use this option to control the mode of how the Directory is locked. LOCAL mode does DASD locking for all Systems with shared DASD to the CXX and also locks the Directory with z/OS ENQ only on the MVS image where the code is executing. This option is best if all CA Datacom execution is not within one Sysplex. It does have a risk of occasionally returning code 67, requiring a reexecution of the process that got the return code 67. SYSPLEX mode does no DASD locking and also locks the Directory with z/OS ENQ on all MVS images in the Sysplex where the code is executing. This option is best if all CA Datacom execution is within one Sysplex. It provides no protection of execution outside the Sysplex. With the recommended Simplify mode in use, the option should be set as SYSPLEX.
Regardless of choice, the CXX name is strongly recommended (required) to be unique within the entire connected site z/OS Systems. When using CXXENQ=LOCAL, we strongly recommend that each CXX name in the local z/OS environment be unique and, when using CXXENQ=SYSPLEX, we strongly recommend that each CXX name in the entire Sysplex be unique.
The setting for CXXENQ is provided on the full CXX report when no DBID= option is provided, or on the CXX report with TYPE=K. An example is: CXX ENQ – SYSPLEX.
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