Is there any way we can use private synonyms in the Entity Model Wizard? Using the latest 11.2 beta and it seems it's still not available. Only Public Synonyms are available. Is there an easy way to change the public / private filter or is this some restriction from the ODP.NET driver itself?
No, there is not. The EDM Wizard doesn't have any discovery functionality beyond Tables, Views, Stored Procedure categories. ODP.NET cannot expose synonyms unless the EDM Wizard allows additional DB objects to be discoverable.