-----Original Message----- From: Bill Planer
Sent: Friday, October 12, 2012 20:07
To: IBM Mainframe Discussion List
Subject: Re: BEGINPARALLEL in IEFSSNxx

I got bit by a locally written subsystem that was incompatible.  I am trying
to remember the mode of failure on a Friday night without logging on to work
and after enjoying an adult beverage or two.

As best I recall, the subsystem's init routine LOADed a module into common
and put it's entry point address into a CSA control block.  When the module
was called by an address space during normal execution, the module was no
longer there.  It turned out that the module had been deleted when the init
routine terminated.  Traditional subsystem init runs under master and any
modules loaded by it belong to master.  Subsystem inits that run under
BEGINPARALLEL run under a TCB that terminates with the init routine, so any
module loaded is deleted by task termination.  There is a way to do this
load such that the module won't be deleted at task termination, but I don't
remember the details.  I do remember that it was complicated enough that I
decided that it wasn't worth the effort to fix.

If anyone needs more details on this, contact me Monday and I'll see if I
can find the SR I opened at the time.

Bill

-----Original Message----- From: Skip Robinson
Sent: Friday, October 12, 2012 17:05 Newsgroups: bit.listserv.ibm-main
Subject: BEGINPARALLEL in IEFSSNxx

I'm finally getting around to using BEGINPARALLEL in IEFSSNxx. A few
subsystems are supposed to precede BEGINPARALLEL . Besides the following,
are there any others?

SMS
JES2
VMCF
TNF

The last two are for TCP/IP, documented in Init & Tuning as nonparallel if
INITRTN is specified.

.
.
JO.Skip Robinson
SCE Infrastructure Technology Services
Electric Dragon Team Paddler
SHARE MVS Program Co-Manager
626-302-7535 Office
323-715-0595 Mobile
[email protected]

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