W dniu 2014-10-03 o 00:12, Storr, Lon A CTR USARMY HRC (US) pisze:
Classification: UNCLASSIFIED
Caveats: NONE
Hello List,
It appears that some of the old restrictions regarding MCAT-cataloging of
installation-allocated datasets that are accessed during system initialization
(usually for OUTPUT) have been relaxed.
I have verified that page datasets must still be defined in the MCAT but, other
than that, I haven't yet found any absolute restrictions. Even couple datasets,
it seems, may be in a UCAT if a volser is specified in COUPLExx.
So far, I've checked SMF (MAN) datasets, BRODCAST, "couple", UADS, USS file
systems (including root) and DFSMS ACDS/COMMDS. I find no text explicitly forbidding UCAT
cataloging.
I'm fairly certain that the CATALOG address space must be active before UCATs
are accessible but I'm rather fuzzy about exactly where in the system
initialization timeline this occurs (i.e. relative to the components that want
to access these datasets).
What other installation-allocated datasets that z/OS accesses during system
initialization must be MCAT-cataloged?
You can find some answer in ServerPac Installation Dialog. Every dataset
has a flag "MCAT Y/N".
Note, this is IBM statement, something "what mama said" - for some
datasets you can actually move them to the UCAT with no harm.
But why? To have unsupported configuation?
HTH
--
Radoslaw Skorupka
Lodz, Poland
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