Manual and Clean Uninstall Oracle for Windows

Warning: Editing registry may cause problems to your PC.

If you facing problems trying to uninstall Oracle from your Windows workstation, or unable to uninstall Oracle installations cleanly and properly, the following steps may be used to uninstall all Oracle products currently install on the workstation:

1. Uninstall all Oracle components using the Oracle Universal Installer (OUI).
2. Delete the HKEY_LOCAL_MACHINE/SOFTWARE/ORACLE key which contains registry entries for all Oracle products by using regedit.
3. Delete any references to Oracle services/components in the following registry location: HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/. Looks for key entries that starts with “Ora” which are obviously related to Oracle.
4. Reboot the workstation.
5. Delete the ORACLE_BASE directory. (i.e C:\Oracle)
6. Delete the C:\Program Files\Oracle directory.
7. Empty the temp directory.
8. Empty the recycle bin.

With this, the computer is more or less clear of any Oracle components, which allows you to reinstall Oracle if needed.

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This entry was posted on Tuesday, December 13th, 2005 at 5:21 pm and is filed under Databases, Operating Systems. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.