Upgrade 10.1.0.4 32 Bit to 10.2.0.3 64 Bit - Which comes first?

Hello,
We are going to be upgrading our Oracle EBS database from 10.1.0.4 32 bit Linux to 10.2.0.3 64 bit Linux. I was planning on doing the upgrade in phases (instead of doing it in one shot) like this:
1) Upgrade database to 10.2.0.3 32 bit. Wait a few weeks to make sure everything is ok.
2) Upgrade server/database to 64 bit.
Is there any advantage to doing the database upgrade first (10.1.0.4 to 10.2.0.3) or the OS/Oracle database upgrade (32 bit to 64 bit)?
Of course I will be testing all of this on a sandbox environment before trying on production.
Thanks,
Alfredo

We are going to be upgrading our Oracle EBS database
from 10.1.0.4 32 bit Linux to 10.2.0.3 64 bit Linux.
I was planning on doing the upgrade in phases
(instead of doing it in one shot) like this:
1) Upgrade database to 10.2.0.3 32 bit. Wait a few
weeks to make sure everything is ok.
2) Upgrade server/database to 64 bit.
Your steps looks safe !!!
Is there any advantage to doing the database upgrade
first (10.1.0.4 to 10.2.0.3) or the OS/Oracle database upgrade (32 bit to 64 bit)?
Yes , upgrading 10.1.0.4 to 10.2.0.3 is safe step , so put safe step first.
Then upgrade 32 bit to 64 Bit , In this step you might see some execution
plan changes
Of course I will be testing all of this on a sandbox
environment before trying on production.
This is mandatory step :-)
- Virag Sharma
http://virag.sharma.googlepages.com
http://viragsharma.blogspot.com

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