Dynamic allocation installation options
To activate dynamic allocation of unload data sets in the installation options module, specify UNLOADDN_ACTIVE=YES. The values for the UNLOADDN option in the $ADUOPTS macro provide the output descriptor names for the primary and secondary unload data sets. To activate dynamic allocation for these data sets on the UNLOAD command, specify UNLOADDN outputDescriptor ACTIVE YES.
UNLOAD PLUS always dynamically allocates referenced file data sets.
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