Bernd Oppolzer asks:
>BTW: is VSAM part of the operating system?
Yes. VSAM is certainly a standard, included, essential, no additional
charge feature within the base z/OS and z/VSE operating systems.
IBM first introduced VSAM (in a more basic form of course) back in the
1970s for DOS/VS, OS/VS1, and OS/VS2 ("Access Method Services"). I don't
think VSAM was ever separately licensed, but someone can correct me if I'm
mistaken on that point.
z/VM's CMS and MUSIC/SP also support VSAM, also in base. Base z/TPF does
also, though it collaborates with z/OS to get the job done. Hitachi's and
Fujitsu's Japanese mainframe operating systems (VOS3, MSP, XSP) also
support VSAM -- not a great surprise given their heritages.
Perhaps you're thinking of Transactional VSAM (DFSMStvs)? Transactional
VSAM is an optional addition available for z/OS. (VSAM RLS is part of base
z/OS.)
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Timothy Sipples
IT Architect Executive, zEnterprise Industry Solutions, AP/GCG/MEA
E-Mail: [email protected]
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