Hi Folks,

 

    We've uncovered a difference in Dynamic Allocation behavior between
z/OS 1.9 and z/OS 1.11 in our location.

 

    A vendor software package does dynamic allocation from a program -
for an //ERRORS DD in this case.   This batch job works fine under under
1.9, but abends under 1.11 with a message saying it could not open the
DD.  Adding the DD card fixes the problem.  Vendor software level is
identical on both versions.  The EXEC statement does not contain a
DYNAMNBR parameter.  I see where ALLOCxx controls some Dynamic
Allocation parms, such as space, unit, etc.

 

    Any ideas what would cause this, or where I should look?  We'd
prefer not to have to change the PROCs involved (there's LOTS of them!).

 

    Is there a system default for DYNAMNBR that can be set somewhere?
Or am I off the tracks entirely?

 

Thanks!

BobL

 

    


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