All,
I have a z/VSE client that believes it is time to move to z/OS. But,
they have one big concern. They have a lot of ShareOption=4 VSAM files.
For those that don't know it, ShareOption=4 files on z/VSE "work out of
the box" without any need for the application program to perform any
enqueue or dequeue. z/VSE automatically performs those functions, unlike
z/OS where the application has to handle the enqueue process.
In their case, they use shareoption=4 so that they can update VSAM files
from batch Cobol programs while at the same time CICS Cobol programs are
also updating the files. They don't want to have to change their programs.
From my initial research, it appears that this same function can be
reproduced on z/OS using DFHSMStvs. (And, it looks like VSAM-RLS is also
required to support DFHSMStvs.)
Are we going down the right path?
Tony Thigpen
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