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You can iterate over the "write"  until you do not receive the
"duplicate record error".  By repeating the write it will increment the
counter until it finds the proper value.  (may be slow)

There must be the value for the next recor in some place, but I never
found out where.

Also, do you have other "unique index" over your table?  The "duplicate"
may come from there.

On 5/24/19 9:56 AM, Jay Vaughn wrote:
no no no Raul... too late at the time with the WRITE.

Seems nobody knows how to detect them.

If you think it out, there has to be some "value" sitting somewhere that is
assigned to the ID when the write occurs.
BUT that column already exists in the table in an ID column... so WHERE
does that "value" sit to be used... or how is it determined to be used?
Is it participating somehow with the RRN?

probably a question for the IBM dB2 team, but thought I'd give the forum a
try.

Jay

On Fri, May 24, 2019 at 9:50 AM Raul Jager <raul@xxxxxxxxxx> wrote:

I will try to avoid the problem as first priority, to detect it you can
use an"error indicator" when you write in RPG or control the return code
in SQL.

On 5/24/19 9:37 AM, Jay Vaughn wrote:
what about my even better question Craig?

How to detect?

On Fri, May 24, 2019 at 9:32 AM Craig Richards <craig@xxxxxxxxxxxxxxxx>
wrote:

CPYF probably - it will keep ID from from_file and not increment ID in
to-file

On Fri, 24 May 2019 at 14:26, Jay Vaughn <jeffersonvaughn@xxxxxxxxx>
wrote:

id BIGINT NOT NULL GENERATED ALWAYS AS IDENTITY
(START WITH 1 INCREMENT BY 1)
primary key(id)

We all know that sometimes the identity column gets "out of whack" and
that
we have to reset it with the alter/restart...

My question is why does it get out of whack.
Even better question, how can we detect the presence of the out of
whackness before we are faced with a "attempt to write duplicate"
because
it was "out of whack"?
Is there a system table we can query to look at to detect these time
bombs?
Abused google looking for an answer and everyone prides themselves with
how
to restart it... and never is it explained how to detect them
beforehand.
TIA

jay
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