> -----Original Message-----
> From: IBM Mainframe Discussion List 
> [mailto:[EMAIL PROTECTED] On Behalf Of Paul Gilmartin
> Sent: Monday, February 26, 2007 9:36 AM
> To: [email protected]
> Subject: Re: SMPE packaging - load modules or CSECTs

<snip>

> 
> So, I wonder why the CICS stubs must be linked with the load
> module rather than invoked with the LINK SVC or LOAD followed
> by a sequence of CALLs.  I guess it's not my dog.
> 
> -- gil

The historical QR TCB used by CICS cannot tolerate use of LINK at all
due to the fact that "task switching" only occurs in the QR TCB when an
EXEC CICS is done (or the watchdog timer goes off). If something creates
a new RB on the QR TCB, then CICS will likely "loose its mind" due to it
just not being architected to suppor this. Too many assumptions in the
various management modules.

What I think would be "interesting" would be if the loader used by CICS
(they now use the z/OS loader on z/OS, but used to have their own) could
be used in such a way that an "unresolved static" CSECT with a specified
name (like DFHEAI) to be directed to an already loaded CICS module. Hum,
I'm not saying that very well, but I hope it is understood. But, in
reality, the DFHEAI module is only 38 bytes long. Just not important.
And, from what I can tell, the code in it has not changed in any way in
a very long time (at least CICS/VS 4.1!).

--
John McKown
Senior Systems Programmer
HealthMarkets
Keeping the Promise of Affordable Coverage
Administrative Services Group
Information Technology

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