Oracle has recently released a new 10g RDBMS version with the first service pack integrated: 10.1.0.3. It gives better support for SuSE and solves some installation issues.
In addition, SuSE has released a new orarun version which makes the installation process a little bit easier.
The plain RDBMS installation is the smoothest I have performed so far.

The Grid Control installation is not trivial if you are seeking a customization. For this reason I'm not too eager to write this documentation since it will be incomplete and won't cover the infinite number of issues you can meet.

Let's start enumerating wht you need before installing.