Forum OpenACS Q&A: Response to Any free or not-free remote server access available for practice?

Paul, nope, I don't know of any. For a cheap co-located shared server set up to run OpenACS, Cathy Sarisky's Acorn Hosting sounds hard to beat. But that's Postgres only, no Oracle.

Your best bet is probably to set up Oracle yourself on your own Linux box. It's probably good practice for you anyway. The pain builds character. ;)