OraOLEDB.Oracle provider is not registered on the local machine

I had the same issue after installing the 64 bit Oracle client on Windows 7 64 bit. The solution that worked for me:

  1. Open a command prompt in administrator mode
  2. cd \oracle\product\11.2.0\client_64\BIN
  3. c:\Windows\system32\regsvr32.exe OraOLEDB11.dll

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