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.
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