z/OS MVS JCL Reference
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Subparameter definition

z/OS MVS JCL Reference
SA23-1385-00

DISALLOW
The system is not allowed to change the serialization on the data set to shared control.
USEJC
The system may change the serialization on the data set to shared control when the DSENQSHR parameter value for the JES jobclass is AUTO. When the DSENQSHR JES jobclass parameter value is ALLOW or DISALLOW, the system is not allowed to change the serialization of the data set.
ALLOW
The system may change the serialization on the data set to shared control when the DSENQSHR parameter value for the JES jobclass is AUTO or ALLOW. When the DSENQSHR JES jobclass parameter value is DISALLOW, the system is not allowed to change the serialization of the data set.
Parent topic: DSENQSHR parameter

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