> -----Original Message-----
> From: IBM Mainframe Discussion List On Behalf Of Tom Marchant
>
> On Fri, 17 Oct 2008 10:07:50 -0500, Chase, John wrote:
>
> > 2 //BR14 EXEC PGM=IEFBR14
> > 3 //DD01 DD SYSOUT= <== nothing there
> >
> >Result:
> >
> >IGD101I SMS ALLOCATED TO DDNAME (DD01 )
> >
>
> That's surprising. Paul's SYSOUT=() does the same thing. His SMS
> configuration must be different. It's as if SYSOUT is ignored.
> Indeed, I
> get the same thing if I specify
>
> //DD01 DD
>
> with no operands. I'm surprised that it doesn't cause a JCL error.
That's just a "null override". We use that technique in CICS JCL, to
"extend" the //DFHRPL concatenation with region-specific libraries (the
"common" libraries are coded in the startup PROC). Of course, at CTS
3.2 the "dynamic libraries" function was introduced, so "someday" we
might pare the //DFHRPL concatenation down to only those libraries that
cannot be defined "dynamically" to CICS.
-jc-
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