z/OS DFSMSdss Storage Administration
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DYNALLOC

z/OS DFSMSdss Storage Administration
SC23-6868-01

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>>-+----------+------------------------------------------------><
   '-DYNALloc-'   

DYNALLOC specifies dynamic allocation, instead of the ENQ macro, to serialize the use of data sets. This allows cross-system serialization in a JES3/MVS environment.

Consider:
  • This serialization is of value only when the dynamic allocation/JES3 interface is not disabled.
  • Run time increases when you use DYNALLOC to serialize data sets (as opposed to enqueue) because overhead is involved in dynamic allocation and serialization across multiple processors.

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