At 09:41 -0400 on 09/04/2013, Shmuel Metz (Seymour J.) wrote about
Re: UNIT=SEP still alive (?):
True, but PASS is still intended for the situation where there is a
receiving DD in a subsequent step. Within the same step, KEEP and PASS
are equivalent.
Except for one MAJOR difference - PASS will leave the tape mounted
(although it might rewind it) while KEEP will unload the tape
(requiring the tape to need to be reloaded to read another file on
the tape) at CLOSE. I do not remember when when the final disposition
of a PASSed file is done if it does not get referenced in a
subsequent step. I have the impression that it occurs at JOB TERM
time. BTW: If the SVC99 (with DISP=PASS) is done in the last/only
step then this becomes a non-issue if the intent is to dynamically
access multiple files on the same tape volume and you use DISP=PASS
to keep the volume mounted.
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