Currently, I have 3 Oracle Home in one server on Windows NT.

HOME1=816 HOME2=817 HOME3=920

I deinstalled 816 and 817 using Universal Installer and manually removed all the directories and services that's related to 816 and 817.

I also removed the registry under controlsets to clean out the services...and I also removed HOME1 and HOME2. I changed default home to be HOME3 and modify everything so that evrything is pointing to HOME3 which is 920 database.

I was able to startup the 9i database and so far I haven't run into any problems....

My question is Did I removed anything that I shouldn't have in 816 or 817 softwares?

I have 816,817 and 920 softwares installed on this server b/c I was doing a migration.