Re: Can HA/DR solutions handle an application uprade that includes changes to PF and LF? -- MIDRANGE-L

Hi Paul

This sounds a bit wacky to me but maybe I am missing something.

Presumably your application is part of the replication configuration which
would mean that regardless of which platform you are on you would not be
able to make changes to the application without breaking the replication.

Mimix can most probably handle the replication of the changes you make to
the files and objects - I say this because all the other products I have
used can - but in the scenario you are describing I don't see how any
product would work.

if you proceed as you described I think you would probably end up with the
application "upgraded" on your primary system but you would not be able to
role swap back.

To have Mimix handle the upgrade you will need an outage to perform the
upgrade and let the object changes and data changes propogate to the target
from the source. Both systems will then have the new version.

If you want to be able to use the application on the backup while you do
the upgrade you will need to rethink your approach.

Perhaps if you could describe what you are trying to achieve someone could
offer some advice that takes into what options Mimix might offer. It sounds
to me like what you really want to do is somehow keep the application
available while you are upgrading it on one of your HA nodes - which is
quite a different kettle of fish as to whether Mimix can handle replication
file and object changes generated during an upgrade.

Apologies if I have overlooked something in your previous posts.

On Fri, Jan 22, 2016 at 10:33 AM, Steinmetz, Paul <PSteinmetz@xxxxxxxxxx>
wrote:

Dave / Rob,

Thanks for the details, and I should have been more specific.

Just clarifying, a planned outage is scheduled for the application upgrade.
A role swap occurs from Primary to Backup.
On the Primary, the application upgrade
1) creates a temp library,
2) copies PF from normal production library to this temp library,
3) deletes the LF and PF in the production library,
4) recreates new PF and LF, with either added/or dropped fields.
5) copies the data back from temp library to production library using
either CPYF map/drop or custom program.

Can MIMIX can handle this or will this be down time and done outside of
MIMIX.

Paul

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
rob@xxxxxxxxx
Sent: Thursday, January 21, 2016 3:26 PM
To: Midrange Systems Technical Discussion
Subject: Re: Can HA/DR solutions handle an application uprade that
includes changes to PF and LF?

Perhaps there's some reason you need to be vague on what kind of files
you're talking about. I'll try to dance around that...

When working with a HA/DR solution based on replication, like Mimix, you
may not select to replicate everything. For example, you may not replicate
the unmodified vendor software but you may replicate the library containing
your mods. Of course the last upgrade we did was from BPCS405CD to ERPLX
so that was pretty major, and it's been awhile. This involved new library
names and whatnot. Including our data libraries.

If you're talking about various IBM files, well, you may not replicate
stuff in certain libraries there also. For example, when we upgaded the OS
on GDIHQ2 a few days before upgrading the primary on GDIHQ1 we didn't want
IBM's mods to file structures being moved in between.
We're rather picky on some of these libraries.

Can you get a rough idea from this snippet?

Data ------System 1 Information------ Process
Group System 1 Library Object Type Type
...
SYSMGT GDIHQ QUSRSYS *ALL *ALL *INCLD
SYSMGT GDIHQ QUSRSYS *ALL *MSGQ *EXCLD
SYSMGT GDIHQ QUSRSYS *ALL *OUTQ *INCLD
SYSMGT GDIHQ QUSRSYS FAXD0* *DTAQ *EXCLD
SYSMGT GDIHQ QUSRSYS FAXD0* *OUTQ *EXCLD
SYSMGT GDIHQ QUSRSYS PEGGYPRT *OUTQ *EXCLD
SYSMGT GDIHQ QUSRSYS P1 *OUTQ *INCLD
SYSMGT GDIHQ QUSRSYS Q* *ALL *EXCLD
SYSMGT GDIHQ QUSRSYS QAQQINI *FILE *INCLD
...

Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600 Mail
to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com

From: "Steinmetz, Paul" <PSteinmetz@xxxxxxxxxx>
To: "'Midrange Systems Technical Discussion'"
<midrange-l@xxxxxxxxxxxx>
Date: 01/21/2016 02:47 PM
Subject: Can HA/DR solutions handle an application uprade that
includes changes to PF and LF?
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>

Can a HR/DR solution handle an application upgrade that includes changes
to PF and LF?

Thank You
_____
Paul Steinmetz
IBM i Systems Administrator

Pencor Services, Inc.
462 Delaware Ave
Palmerton Pa 18071

610-826-9117 work
610-826-9188 fax
610-349-0913 cell
610-377-6012 home

psteinmetz@xxxxxxxxxx<mailto:psteinmetz@xxxxxxxxxx>
http://www.pencor.com/

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