Installation of Gnome worked fine.... but how can i access this desktop remote? I decided to use VNC, because i already worked with it. So i installed the package "tightvncserver" with "aptitude install tightvncserver" and started it with vncserver. As VNC-Client i tried to use the tightvnc-client, but it was much slower than the ultra-vnc, i don't know exactly why, sometimes  misconfiguration. The next problem was that i got a console but no gnome-desktop. I forgot to configure the vncserver. I had to edit the file  /root/.vnc/xstartup disabled x-windows and added gnome. Now it looks like this:

xrdb $HOME/.Xresources xsetroot -solid grey
x-terminal-emulator -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
#x-window-manager &
exec gnome-session &

For KDE your file would look like this:

xrdb $HOME/.Xresources
xsetroot -solid grey
x-terminal-emulator -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
#x-window-manager &
startkde &

After starting with "vncserver" i was able to access the remote machine by my Windows-XP UltraVnc-client.

The next step was to get the linux installation package from the oracle-site. There are a lot of HOWTOS available on the net, i used this one. After successfully configuring my Debian i was starting the OracleInstaller...

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