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Could not load type 'OracleInternal.Common.ODTSettings'

SMerrill8Jul 3 2017

On Windows 7 Enterprise SP1, I have the Oracle winx64_12102_client installed, with ReSharper Ultimate.

I have VS 2015 Professional Update 3 with ODTforVS2015_121025.exe (ODT  12.1.0.2.4) installed.

I have set the ORACLE_HOME system variable to "C:\Oracle\product\12.1.0\client_64".
Here is the failure:

  1. Open Visual Studio 2015.
  2. In Server Explorer, choose Data Connections > Add Connection.
    ERROR:
    Failed to find the default tnnames.ora file.
    Could not load type 'OracleInternal.Common.ODTSettings' from assembly 'Oracle.ManagedDataAccess, Version=4.121.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342'.

  3. Click OK,  A rudimentary Add Connection dialog appears.
  4. Fill in the Username, Password and Data Source properties.
  5. Press Test Connection.  the message "Connection Succeeded" appears.
  6. Press OK.
    ERROR:
    Unable to add data connection.
    Could not load type 'OracleInternal.Common.ODTSettings' from assembly 'Oracle.ManagedDataAccess, Version=4.121.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342'.

How do I correct this?
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Locked on Jul 31 2017
Added on Jul 3 2017
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