If I understand the manual correctly, going from 10gR2 to 10gR1 should be okay with TTS.
http://download-east.oracle.com/docs/cd/B19306_01/server.102/b14231/tspaces.htm#i1007244
TTS between version - dont think Oarcle will like you very much if you do that
data pump might be a better option
On 01/06/06, Grabowy, Chris <chris.grabowy@xxxxxxxx> wrote: > > So let's say you have a 10gR2 database that you need to downgrade to > 10gR1. You have no choice, you have to downgrade. >