On Tue, 16 Feb 2010 06:32:17 -0500, Jousma, David wrote:

>We only look at SORTIN.  Due to this (in my opinion) limitation in
>DFSORT:
>
>From the DFSORT APG under the SORTIN DD statement, that supports our
>testing, and the reason for our ICEIEXIT implementation:
>
>The following rules apply to concatenated data sets:
>.
>If you define a data set using the DUMMY parameter, do not concatenate
>other data sets to it; the system ignores data sets concatenated to a
>DUMMY data set.
>
Not peculiar to DFSORT; pervasive z/OS behavior.  Documented in
JCL RM or Using Data Sets or somewhere.  I'll find it if you can't.

"limitation"?  Rather, IMO, [synonym for "aspirates"].  NULLFILE
would more usefully behave identically to an empty data set.

Circumvention?  Create and catalog an empty data set and use
that for the default.  I've done this for both PS and PO data
sets to use as needed.

-- gil

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