Chris
On the contrary, I would regard SUB=MSTR to be anything but bizarre and
rather more the normal way of things than having to bother with a
complicated "subsystem" environment. It's only when your program does
exceptional things such as needing, say, a SYSIN file that a spooling
subsystem becomes useful.
Probably I got this attitude by having to wrestle with system startup
automation where, for example, the NetView SSI task and an "automation"
NetView task needed to be started at an early stage with SUB=MSTR so that
they could manage the starting of address spaces such as, well, JES2. Indeed
the address space management also extended to managing shutdown - although
logging off the VM userid supporting the MVS image was equally effective and
a bit faster! - and exchanging one JES2 environment for another. In case
this last operation looks odd it's important to know these were student
environments for hands-on classes.
I also had a few trivial VTAM-based programs which performed functions such
as presenting the round-trip time for 1920 or so characters to a 3270
display which didn't need JES2 and so were quite happy to be started
SUB=MSTR.
Chris Mason
----- Original Message -----
From: "Craddock, Chris" <[EMAIL PROTECTED]>
Newsgroups: bit.listserv.ibm-main
To: <[email protected]>
Sent: Friday, June 15, 2007 4:54 PM
Subject: Re: Multiple TSO logons
Tom Moulder said of the z/OS System Explorer
Agreed Chris. I did not say that it was a replacement for TSO. It
did
however remove the need for VTAM in the middle of things because it
was
JAVA and pure TCP/IP.
True. And in one of those bizarre "who'da thunkit?" moments, it also
turns out that it will cheerfully run SUB=MSTR. So you can do a bunch of
stuff without even JES being up - basically anything that does not in
and of itself require the services of the JES. Obviously you would have
to do some quirky things in your z/OS setup to do that, but I tried it
out and it worked.
BTW> there's an embedded gen-u-wine Apache web server running inside of
it - which is how I happen to know how much of a pain in the butt it is
to port the native Apache C code onto z/OS.
CC
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