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How do I completely remove the Oracle 11g client from my computer? I am running Windows 7, 64-bit.

I have tried running deinstall.bat, but this doesn't work.

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up vote 12 down vote accepted

From Manual and Clean Uninstall Oracle for Windows :

  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.
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That link no longer works... –  Richard Everett Sep 5 '13 at 14:56
@RichardEv: I fixed the link, but it doesn't contain much more info than the above. –  harrymc Sep 5 '13 at 17:30
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  1. Remove any oracle entries in the PATH variable under Computer =>Properties => Advanced System Settings => Environment Variaiable => PATH
  2. In the same place remove the ORACLE_HOME entry
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