Again, Twitter to the rescue.
Who is Christian Berg? Well, to me, he's the guy who commented on my first OBIEE post. We corresponded back and forth via email. After that and I believe I convinced him to join twitter. He was very helpful in his emails to me, pointing me in the right direction and so on.
Anyway, shortly after my last tweet above, I received an email from Christian. It was a detailed explanation of the different ways that you could migrate your rpd file, or what you have in development/qa to production.
So, with permission, I'll reprint the email here (by the way, people need to pressure him to blog, I don't want to have to keep giving him credit here ;).
1.) You have a full multi-user development environment which allows you to group your rpd objects in "Projects" and use a check-in/check-out mechanism against a central repository. I.e. there's the central rpd on the server, you check out a project, make your changes and check it back in to the server. [ link ]
2.) You merge your local repository with the production repository. This one you knew probably and can't use it since your local repository contains more changes than you actually want to transfer. So here's a little trick: strip your local rpd down to the bare minimum of changes you want to propagate. This way all the merge will do is an upsert and shove all your new objects into the central rpd. [ link ]
3.) You can use "Import from archive". It's been deprecated and inactivated by Oracle in order to push people to usethe "merge" functionality. However, it's still alive and kicking in the background. It's a nice feature if you know exactly what you want to transfer and if what you want to transfer is really "encapsulated". I.e. you don't start shooting into generic business models or stuff like that but have all in nice purpose-built objects which are added on top existing ones. Since - as far as "updating" goes - the import is the most brutal one. [ link ]
There you have it. I would encourage all of you to do the following:
1. Let Christian know that he needs to start/resume his blog.
2. Give him lots of money by way of jobs or bonuses. He is most deserving.