The only option I can see is creating a new 9.2.0.8 instance *without* the problematic
CPU, upgrading there, then using exp/imp to re-integrate. Ugly, but it might work.
Keep in mind that Oracle 9.2 is no longer supported by Oracle (in fact 10gR2 is now
in limbo as well), and ArcSDE 9.3 is the last ESRI release to support 9iR2 (ArcSDE 10
only supports 10gR2 and 11g [32- and 64-bit]). You may need to consider moving your
GIS data to a more modern database, and rigging some backward export mechanism
to support the 9i-bound application until you can transition it.
- V