Re: Data replication of Identity values

Not sure what you are using for HA, I can say that Mimix, iTersa and
iCluster all support the F-IT journal entry (Identity Column) and have
for about quite a while.
I would also expect that whatever audits are run over the objects that this
would have kicked out as being different between systems. .


Augie Palumbo
312-735-3723
702-826-2836


On Wed, Oct 14, 2020 at 9:19 AM Rob Berendt <rob@xxxxxxxxx> wrote:

Yeah, totally unacceptable. If that identity column is used as a primary
key, (like order number) and then there are dependencies off of that (like
order number in the order line table) you're not going to be happy.

Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1
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Dept 1600
Mail to: 7310 Innovation Blvd, Suite 104
Ft. Wayne, IN 46818
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-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Art
Tostaine, Jr.
Sent: Wednesday, October 14, 2020 11:50 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: Data replication of Identity values

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Thank you Charles. I agree they should know but say they've never dealt
with this before.

We are using HA right now to sync our production system to a production
system in the cloud. This morning, we cut off comms and we began testing
in the cloud. We tried to insert a record to a table with an identity
column. The rows in the table match but the identity value is from when
the cloud system was setup from our system save on 9/10.

Art

On Wed, Oct 14, 2020 at 11:15 AM Charles Wilt <charles.wilt@xxxxxxxxx>
wrote:

First off...I'd say you need a new HA vendor...

Secondly, not quite following what you mean by "SQL identity value isn't
updating"

Are the rows being inserted? Using the same value as the source table

had?

Are you having a problem when the secondary system becomes primary?

You may have to include an ALTER TABLE ALTER COLUMN myid GENERATED ALWAYS
RESTART AT ...

As part of your switch over...

But again, your HA vendor should be experienced with identity columns at
this point.

Charles

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