After writing some things about the Oracle Fusion Middleware 12c Release and its documentation, here the screenshots from the installation. You have to start with this command:
schroff@hades:$ ./oepe-indigo-installer-12.1.1.0.0.201112072225-12.1.1-linux32.bin
Extracting 0%....................................................................................................100%
Here i chose custom:
Running on nearly the current java version (recommended version fom www.java.com: version 6 update 30)
And ready for startup: