On Fri, 30 Nov 2007 10:16:32 -0600, McKown, John wrote:
>>
>> DISPLAY=local.desktop export DISPLAY
>> oedit some.file
>>
>> ... and have a new, genuine x3270 window running ISPF/PDF pop
>> up on one's desktop? No need to enter user ID and password;
>
>Now that sounds interesting! And I even understand it. <grin> But it
>
Ah! It's refreshing that my thought processes sometimes mesh
with others' on this list.
>would likely be difficult to implement because OEDIT is just an
>interface to ISPF edit. So the z/OS UNIX version of "oedit" would need
>to set up an ISPF environment. Which likely means a unique, non-shared,
I do this routinely from a (non-interactive) Unix shell with Rexx:
address TSO 'ISPSTART cmd( %... )'
... where I do LMINIT, LMCOPY, LMMSTATS, LMFREE, ... (but not edit).
The obstacle is in connecting to a terminal, not in setting up an
ISPF environment.
>ISPF profile dataset.
>
In the non-interactive case, it suffices (and I prefer) simply to:
alloc dd(ISPPROF) new unit(VIO) space(1,1) tracks dir(5) delete
... (we don't need no ISPPROF).
It's ironic that ISPF which so successfully serializes edits to
PDS members can't do likewise with its own profile data set. I
suspect the obstacle is that for performance ISPF caches profile
updates and synchs them all at exit rather than updating dynamically.
But (I've described here before) we have developer/testers who like
to be logged on to one production system and several test systems
concurrently. Some years ago, our sysprog took the expedient step
of blocking CA/MIM's propagation of the ENQ on ISPPROF. I have
heard of no resulting difficulties; programmers understand that
the last session to exit wins; and corruption is possible only in
a tiny timing window if the programmer types EXIT on two terminals
and presses ENTER with one hand on each terminal simultaneously.
And doesn't z/OS itself nowadays serialize PDS directory updates
to prevent corruption? In the last resort, there are HSM backups.
I know; Shmuel has already said it's not his dog.
-- gil
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