Below services post was needed for the following:

I had a machine with Oracle 9 installed, and wanted to uninstall it. The uninstlaler installed on disk however told me that I needed a newer installer to remove the software (old installer used for base, then newer installer on CD used for patches/upgrades, and the new installer not installed on the harddisk). So this is what I learned from a colleague who used to work at Oracle:

• Stop all oracle services
• Remove all oracle services
• Delete c:\oracle
• Delete c:\documents and settings\all users\start menu\oracle*
• Delete c:\program files\oracle
• Start regedit and delete HKEY_LOCAL_MACHINE\Software\Oracle

Done!

Apparently at Oracle the same method is used quite often.

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