Oracle 11i to R12 – Upgrade or Re-implement?
It will be sold as the easy, fast and cheapest way to go from Oracle 11i to R12 but is upgrading the right choice?
Unless my client has an extremely well refined 11i ERP solution working without fault with almost no customisation nor any country localisations, I would always say that a re-implementation is the right way forward. Time and time again, when working on upgrade projects, things are always a lot harder than if the project was being implementeded. I liken an 11i to R12 project to a house renovation. Consider 11i to be your house now and R12 to be the super environmentally friendly completely modern house of the future. If you have a very basic house that has been well constructed and has a great layout then making the renovation is straight forward, however, if that house is old, of a poor design and construction that needs all the pipe work and wiring replaced, making it extremely hard to get the underfloor heating in that you wanted, surely it would be better to knock it down and start again? Of course this is where my comparisons end because the costs of knocking down a house are usually the biggest factor as are the costs of any IT project, the 11i to R12 upgrade being one of them. But will the cost be any greater by doing a reimplementation instead of an upgrade? In the long run, with the delays to the project or the late surge in additional resources to fix the issues, update the customisations and ensure that the localisations are working to meet local fiscal policy, the upgrade becomes as costly, if not a higher cost than a clean re-implementation!
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