On Wed, 11 Jul 2018 18:09:21 +0000, Seymour J Metz wrote:

>You keep missing the point that REXX does not currently provide the 
>serialization
>that is available through JCL. Rewriting the job as a REXX script that does 
>not do
>the necessary serialization is a CLM.
>
??CLM??

>That's why I suggested a parallel allocation facility usable from REXX.
>
In order to avoid deadlocks, that parallel allocation facility must be invoked
only once, and before any other SYSDSN ENQs are extant.

There might be a way:  launch the Rexx script from Unix System Services.
Better yet, support //SYSEXEC DD PATH='/...' so no static ENQs are needed.
RFE material?

>I don't like JCL, but I don't see any way forward other than incremental 
>improvements.
>
Business case for those?  And trimming the whiskers from JCL would
create compatibility problems for users who have come to depend on
them, even if only as circumventions.

-- gil

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