Shmuel Metz (Seymour J.) wrote:
In <4e3a4e7e.5090...@bcs.org.uk>, on 08/04/2011
at 08:47 AM, CM Poncelet <ponce...@bcs.org.uk> said:
I proved that, if "On input, the order of override priority is
program DCB -> JCL DCB -> dataset attributes", then the consequence
is an I/O error
Not only did you not prove that, but others gave examples of such
overrides having practical value.
the hypothesis that the priority order both on
output and on input is the same
Not an hypothesis - an observed fact.
because there is no I/O error on output,
False.
It is not 'my' prejudice, but what one of the greatest MVS sysprogs
I've ever known (he too had 30+ years experience, then) taught me
when I started as a sysprog on IBM mainframes in '85
I wonder why I don't believe you?
Is it perhaps because you forget that Fortran I was around in 1955 and
the Lyons Electronic Office (LEO) was around in 1952? In fact, I still
have the green plastic covers (with gold labelling) from the original
LEO manuals: I wonder why?
The documentation does not necessarily match the facts
The code does.
and the I/O error is a fact..
An irrelevant fact, and not what you seem to believe at that. An
inappropriate override can cause an I/O error for *both* input and
output, and an appropriate override will not cause an I/O error for
either.
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