Oracle 11g on Windows DBConsole does not start

Wow. I have broken my thoughts about this for a loooooong time. In the end stuff can be so simple:

When you get the errormessage that it cannot start the DBConsole do this:

Make sure you have the MS loopback adapter installed (remember my previos Blog-entry)
Make an entry in your hosts file:
xx.xx.xx.xx yyyy
where xx.xx.xx.xx is your fixed IP-number on the MS Loopbackadapter and yyyy is your computrename
Restart the service

That should do the trick