The duplication exists in the data, not in the index.

On Tue, 19 Jan 2021 at 18:22, Cameron Conacher <conac...@gmail.com> wrote:

> A KSDS with duplicate full primary key values?
> Are you sure?
>
> Sent from my iPhone
>
> > On Jan 19, 2021, at 10:19 AM, Steff Gladstone <steff.gladst...@gmail.com>
> wrote:
> >
> > Greetings,
> >
> > We are trying to figure out how a VSAM file became compromised. That is,
> > even though the primary key is unique, when we do a REPRO, we see that
> the
> > data contains an extra record with the same key.
> >
> > The file is updated from two different computers via a batch COBOL
> program.
> > The share options are (4,3) and an enqueue (with parameter SYSTEMS) is
> > performed (using an assembler subroutine) before any update is done.  The
> > site has a 3rd-party product from CA that propagates the ENQ from one
> > computer to the other.  We even tested the ENQ and saw that an update
> from
> > the second computer was blocked when the first computer previously issued
> > an ENQ prior to its update.
> >
> > It looks as if an update in one computer has not been committed from
> memory
> > to disk before the update in the second computer occurs.  Which
> definitions
> > are lacking that would prevent this from happening?
> >
> > Thanks in advance,
> > Steff Gladstone
> >
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