On Fri, 2 Jul 2010 07:38:49 -0500, Mark Zelden wrote:

>It still works for certain things, but to be honest, I haven't needed to use
>it since DFSMS and ISPF added the support for renaming an "in use" data set
>in OS/390 R10.
>
Isn't this just an automated mechanism for zapping the VTOC?  The
integrity protection remains carbon-based (graphite on Post-IT),
and the programmer must know, somehow, that the other jobs holding
ENQs refer to irrelevant volsers, or intend _never_ to modify the
extents.

-- gil

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