is a favorite subject, as some of our more astute readers might have noticed, so I couldn't help but link to this review
of Oracle 10g on Mac OS X. The reviewer walks through the installation steps (which do require the terminal, but come on this is Oracle we are talking about so if you aren't comfortable launching Terminal you shouldn't be installing it) and covers some of the products features.
He also tells us that Mac development of Oracle has been put on hold, though Oracle promises to support PowerPC Macs (and Intel Macs) for the foreseeable future.
If enterprise level databases do it for you, give the review a try, if not instead of reading the article feel free to think happy thoughts about iPods.