Then, why does every VSAM DD for every z/OS site I have worked with, always include DISP=SHR? (I guess, because it's a habit from non-VSAM files and nobody told them they did not have to do it.)

Tony Thigpen

John Clifford wrote on 07/10/2018 04:16 PM:
Z/os VSAM is always accessed as  DISP=SHR.

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