Oracle 11g installation under Gentoo 2008.

Unfortunately, I had to run the installation of the server myself. From the initial gentoo linux installation to the Oracle instance setup.

Everything was fine, except the Oracle install of course! I read the standard Oracle for Linux installation guide, and didn't understood where to get the X server from.

To tell the truth, it's not that difficult.
1. There's no need to install X server onto the box which is supposed to work as a server - you can install any X server onto the client. If you are a normal person and use Windows as a desktop, as I do, you can choose minigX, install it on your desktop.
2. export DISPLAY variable
3. Do all the steps from official Oracle installation manual.
4. Somewhere at 78%, during the linking stage, Oracle Installer will report about some failure in the linking process. No need to worry, just use the recipe taken from the Internet!

Oracle works fine now.