> -----Original Message-----
> From: IBM Mainframe Discussion List On Behalf Of Lizette Koehler
>
> Johnny,
>
> When allocating any dataset under TSO or BATCH I always
> ensure the DISP parameter is properly set.
>
> If you just code a DD statement of
>
> //DD1 DD DSN=datasetname
>
> Then the default DISP is OLD,DELETE.
The z/OS 1.5 MVS JCL Reference manual disagrees:
"If you omit the DISP parameter, the default is a NEW data set with a
disposition of DELETE for both normal and abnormal termination disposition.
Thus, you can omit the DISP parameter for a data set that is created and
deleted during a step."
-jc-
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