Hi Dan,
I have installed Oracle8i on RH 8. You will need RH 7.3 (in particular disk 2) for the compat libs to RH 6.2. RH 8 does not have the compat libs anymore. So you can use 8i on RH 8. Works ok on OpenACS and CCM. I have also renamed the ctxhx0 to ctxhx... works ok.
I can email you later the compat libs listing (rpm -qa | grep compat) that I have installed in case you want them.
Do you think 4.7 will make use of 9i? The only reason that I am sticking to 8i right now is because of OpenACS.
Oh yeah... in case you are using JDBC, the lastest downloadable drivers in Oracle classes12.zip does not seem to work. So I use thin mode or if I use oci8 I use an older version.