>I'm in the process of learning about and how z/OS controls data and
>hiperspaces, for example are there any parmlib or tuning options available at
>a system level?
MAXCAD in IEASYSxx limits the number of SCOPE=COMMON data spaces in the system.
> What about on a more granular level? Any way to limit or control, for
> example, on a user basis? Will the IEFUSI exit control down to the
> data/hiperspace allocation level?
IEFUSI can limit the total number of as well as the total amount of virtual
storage that can be used by a problem state program for data and hiperspaces.
> Does WLM have any plan in this?
Not that I'm aware of.
> What about RMF, is there anything in there or another monitoring product that
> would display or alert if there are storage problems, especially
> hiper/dataspace related?
Dataspaces are virtual storage objects that are backed by real storage the same
as the private area is. Hiperspaces live only in expanded storage on
non-z/Archtecture hardware. z/Architecture does not have expanded storage, so
they must live in real storage (but are never related to virtual addresses).
RMF III will show real storage usage for data and hiperspaces as part of
"active frames WSET" but not as part of "frame occupancy".
There might be other places where RMF tells about data and hiperspace usage.
I'm still kind a RMF newbee.
I assume you now about manual "MVS Programming: Extended Addressability Guide"?
HTH
--
Peter Hunkeler
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