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Another thing to keep in mind. You will not be doing an "upgrade" since IBM would not support a jump that big. Rather you are looking at a re-implementation of the systems. While you need to be somewhat diligent about the PSPs etc, the odds of a real problem are slight. The issues will be in QGPL and QUSRSYS. If the customer left lots of objects in those libraries, or if they used out file support extensively then there is going to be quite a bit of work to correct those issues.

See if you can do a side by side upgrade.

An experienced, certified system administrator can do this transition given sufficient time for planning. The old carpenter saying comes to mind, measure several times, cut once. In this case, plan, plan, plan again, then do the cutover.

Jim Oberholtzer
CEO/Chief Technical Architect
Agile Technology Architects, LLC


On 8/16/2010 10:31 AM, Luis Rodriguez wrote:
Hi,

As always, I think that the first thing to do should be checking the Memo to
Users manuals of the releases you are going thru (V4R5--> V5R4). Also, IIRC,
there are some observability issues in going from V4R4 to V5Rx. If your
programs were compiled without observability you can have som problems.

HTH,
Luis Rodriguez
IBM Certified Systems Expert — eServer i5 iSeries
Dear All,

One of our customer is buying a new box with V5R4 and he is in V4R4. My
question is can his application be run without any compilations.


--
Regards,

Chamara Withanachchi
IBM Certified Power System Expert
RPG Programmer
(owner of www.rpgiv.info)


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