07-01-2013
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Join Date: Sep 2007
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You have to check with your applications, if they support AIX 7.1. For this contact your application support or do some searching in any compatibility matrixes etc. on the web.
You can either do an upgrade or a new installation of the OS.
Depending on your environment and the available amount of downtime, you can decide what you are gonna do.
I am usually not a friend of upgrading so I'd prefer a new install, if possible. Though I have no experience on how flawlessly an upgrade works.