This is helpful, thanks, David. The INSO filters are available for Linus with Oracle 8.1.7. I've not checked the Oracle site recently, as of a couple of months ago only 8.1.7 EE was available (uncompressed, grrr).
As we get closer to having an OpenACS 4 release it would be great if you or someone else with extensive Intermedia experience would review the existing ACS 4 docs, fold in whatever information can be gleaned else where (i.e. the ASJ notes), etc. The OpenACS team has historically been PG-centric for obvious reasons, so could use lots of help with Oracle-specific issues. Ken Kennedy, who is helping with the OpenACS 4 porting effort, is a professional Oracle DBA and has offered to help with Oracle stuff, though I don't know if he's had much experience with InterMedia.