Thoughts on Migration Strategies

DAVID PETERSEN

Thoughts on Migration Strategies
Hi All:

We are planning to migrate from v5 to v6 on OS/390. In order to do this
we must apply fallback PTFs. Our current maintenance level is 9912.
We are going to roll the fallback PTFs through production. Once this
is successful we will at a later date migrate to v6. Another approach
would be to roll the fallback PTFs along with the migration to v6 at
the same time. Any thoughts on either approach? Upsides? Downsides?
What is your philosophy for this effort?

We are choosing to implement just the fallback PTFs on v5 without
bringing the maintenance level to current. Again... Any thoughts on
either approach? Upsides? Downsides? What is your philosophy for this
effort?

Thanks for your comments,

Dave



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Re: Thoughts on Migration Strategies
(in response to DAVID PETERSEN)
I haven't been responsible for migrations in a long time, but unless
there's some reason to rush, I'd say make it a staged effort - apply PTF's,
get current on maintenance, and then migrate.

Georgre



Philip Gunning

Re: Thoughts on Migration Strategies
(in response to truman.g.brown@VERIZON.COM)
Dave, 1) I would recommend applying the latest maintenance and fallback
ptfs. Many times once you get to the new release, you find out that it
would have been better to have been current on maintenance as you may find
certain new functions don't work right without maintenance that would have
been there if you had applied it in the first place. This is even more
important with going to V6.1 as a result of all the retrofits
and new functionality. I've seen catmaints fail because we were not current.
2) Experience. You might be okay with the first approach, but I'd rather be
safe than sorry. HTH Phil


-----Original Message-----
From: DAVID PETERSEN
To: [login to unmask email]
Sent: 1/12/01 12:50 PM
Subject: Thoughts on Migration Strategies

Hi All:

We are planning to migrate from v5 to v6 on OS/390. In order to do this
we must apply fallback PTFs. Our current maintenance level is 9912.
We are going to roll the fallback PTFs through production. Once this
is successful we will at a later date migrate to v6. Another approach
would be to roll the fallback PTFs along with the migration to v6 at
the same time. Any thoughts on either approach? Upsides? Downsides?
What is your philosophy for this effort?

We are choosing to implement just the fallback PTFs on v5 without
bringing the maintenance level to current. Again... Any thoughts on
either approach? Upsides? Downsides? What is your philosophy for this
effort?

Thanks for your comments,

Dave



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can

Jeff Frazier

Re: Thoughts on Migration Strategies
(in response to Philip Gunning)
i'm currently working on migrating to v6 of DB2. We brought it in as a
Serverpac at a set level. I am then applying all the maint they sent with
it and then ordering the PSP maint to put on before i migrate to v6. i also
applied all the toleration and fallback maint that IBM suggested to my V5
DB2. With this release it sounds like it is better to stay current with
maint and follow what IBM suggests.




DAVID PETERSEN <[login to unmask email]>@RYCI.COM> on 01/12/2001
03:50:50 PM

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Subject: Thoughts on Migration Strategies


Hi All:

We are planning to migrate from v5 to v6 on OS/390. In order to do this
we must apply fallback PTFs. Our current maintenance level is 9912.
We are going to roll the fallback PTFs through production. Once this
is successful we will at a later date migrate to v6. Another approach
would be to roll the fallback PTFs along with the migration to v6 at
the same time. Any thoughts on either approach? Upsides? Downsides?
What is your philosophy for this effort?

We are choosing to implement just the fallback PTFs on v5 without
bringing the maintenance level to current. Again... Any thoughts on
either approach? Upsides? Downsides? What is your philosophy for this
effort?

Thanks for your comments,

Dave