The deinstallation steps of Oracle DBMS
In the past I've had many
problems uninstalling all Oracle products from Windows systems. Here's my last resort method:
- Uninstall all Oracle components using the Oracle
Universal Installer (OUI).
- Run regedit.exe and delete the HKEY_LOCAL_MACHINE/SOFTWARE/Oracle key.
This
contains registry entires for all Oracle products.
- If you are running 64-bit Windows, you should
also delete the HKEY_LOCAL_MACHINE/SOFTWARE/Wow6432Node/Oracle key
if it exists.
- Delete any references to Oracle services left
behind in the following part of the registry (HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/Ora*).
It should be pretty obvious which ones relate to Oracle.
- Reboot your machine (otherwise you will still see
Oracle service in Control Panel -> Administration Tools ->
services).
- Delete the "C:\Oracle" directory, or
whatever directory is your ORACLE_BASE.
- Delete the "C:\Program Files\Oracle"
directory.
- If you are running 64-bit Wiindows, you should
also delete the "C:\Program Files (x86)\Oracle" directory.
- Remove any Oracle-related subdirectories from the
"C:\ProgramData\Microsoft\Windows\Start Menu\Programs\"
directory.
- Empty the contents of your "C:\temp"
directory.
- Empty
your recycle bin.
At this point your machine
will be as clean of Oracle components as it can be without a complete OS
reinstall.
For more details, please see this video.
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