Oracle Custom Class Wizard fails to generate custom c# class from Oracle User Defined Datatype

c# oracle visual-studio odp.net server-explorer

Modify Oracle connection and use "Oracle Database (ODP.NET, Unmanaged Driver)"

Data source = "Oracle Database"
Data Provide = "ODP.NET, Unmanaged Driver" (Default was ODP.NET, managed Driver)

using "ODP.NET, Unmanaged Driver" data provider this error will resolve (Its works for me in VS2012)

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