In <[email protected]>, on
07/29/2011
at 09:33 AM, Tom Marchant <[email protected]> said:
>On Thu, 28 Jul 2011 12:04:37 -0700, Dale Miller wrote:
>Label (DSCB or tape label) is only used for an existing data set
More precisely, the relevant fields for a new dataset are initialized
to zero, so the effect of the forward merge is nil.
>Mr. Poncelet made the same assertion.
No; he made a very different assertion. Dale Miller's assertion that
the reverse merge is not done for INPUT was correct.
>>one can TEMPORARILY override the dataset attributes with a DD
>>card if the OPEN is for INPUT
>No. See for example the JCL Reference manual.
Yes. The text you quote shows the data set label as lowest priority.
>Therefore, if you supply information for the same DCB field in your
>processing program and on a DD statement,
That has nothing to do with what he wrote.
>If a DD statement and the data set label supply information for the
>same DCB field, the system ignores the data set label information.
No, it merges them.
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
ISO position; see <http://patriot.net/~shmuel/resume/brief.html>
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)
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