Gibney, Dave pisze:
VSAM (and all SMS datasets) can't exist without being cataloged.
Well... To be accurate: they cannot be *used* without being cataloged.
But they can exist.
Shared
Catalogs are not "safe" without integrity protection.
Huh? AFAIK It is safe and fully supported to share an UCAT without GRS
or MIM. That means RESERVEs and can hurt performance, but it is possible
to safely and effectively share low-used UCAT. BTDT.
So, it is possible to share volumes, including SMS managed volumes and
VSAM files. Application files.
I would be very careful when talking about sharing system datasets and
volumes because the system is the most breaking rules user of the datasets.
Last but not least: sharing datasets doesn't mean that many applications
can update them concurrently. It can or (more likely) cannot be don even
within single MVS image.
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Radoslaw Skorupka
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