On Wed, 13 Sep 2017 07:29:43 +0200, Peter Hunkeler wrote:

>I think the main problem here is dynamic allocation (SVC99) is not allowing 
>the unauthorized caller to specify it should enqueue uncondtionally. For that 
>reason BPXWDYN, TSO ALLOCATE, etc return  with "data set in use" instead of 
>offering the option to wait until it becomes available.
> 
That's allowed if the request specifies S99WTDSN.  That, in turn, requires
APF authorization, assuming an authorized program can be trusted to
circumvent deadlocks.

-- gil

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