Why don't you give it a try yourself, if you have both circumstances available?
From my understanding, I see no problem with that. I read somewhere, we need to take care of oracle versions, patches, NLS_% parameters etc. And you can go ahead. I am talking about full db export here. Please also refer to this approach AskTom suggests: http://asktom.oracle.com/pls/asktom/...D:526422273445
I can wait. It doesn't matter what os that you exp from or imp to, you are still using the same two programs, which have each been compiled on their respecitve platforms. It is also one of the primary methods that people use to migrate from one platform to another. Replication being another method.