Well, some years ago, when Oracle introduced this functionality (silent installation), it was quite buggy so using it in production was a risk.
That's the reason I'm still not using it unless really...
I SSH'd to the "box", and don't think my terminal supported the fancy X stuff, anyway, but now that I have the response file, I can reinstall it quickly. I'm sure this will come in handy, as I do...
Your best hope is to rebuild your system starting with the Solaris 10 Install DVD. Then start your Oracle install again. I speak from experience. Don't waste time trying to fix little things, just...