W dniu 31.10.2020 o 00:40, Joe Monk pisze:
Radoslaw,
He is asking about shareoption (4 x) not (x 4) aka cross-region sharing,
not cross-system sharing.
In VSE, Shareoption(4) allows vsam file sharing among partitions (similar
to a z/os address space). VSE manages that automatically, for the user.
Well, I just learnt something new about VSAM. Thank you.
Actually it is strictly related to z/VSE - this system is unknown for me
(my research told me there were only two installations in Poland).
For example I don't know what is partition in VSE and how it is differ
from regular address spaces or just several jobs (in VSE) working with
same shared VSAM file.
BTW: Few questions
Where can I read about VSAM SHR (4 x)?
Was SHR (4 x) available on MVS or its predecessor?
Is there any "introduction" of VSE disks usage, datasets, and so called
file system? How is it similar to z/OS?
However, regarding the subject I sustain that migration to Db2 is worth
to analyze.
Of course everything depends on many factors like appliation complexity,
staff availability, MIPS in use, budget, plans for the future, etc.
--
Radoslaw Skorupka
Lodz, Poland
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