Just admiration will not work :), it would be good if you can reward the people with points :)
Any way, you need following patch to apply before you upgrade to 11gR2, other wise upgrade might face error "sys.dbms_java must be declared"
I know this is over an year old thread. I was looking for a manual/guide to help me with oracle *9i (non-rac) to 11gr2 (with ASM+RAC)* migration [both 9i and 11gr2 on OEL 4.7 - I am doing this exercise at home using VMWare to prepare myself for actual upcoming project at work]. The URLs provided in the previous posts are no loger valid. I'll continue my search but if someone can help point to the valid documents/guides, it will be highly appreciated.