Oracle ODP.Net With Entity Framework 6 - Entity framework database compatible provider could not be found

Question

I am trying to build an MVC 5 Web application with Entity Framework 6 that works on Oracle Database , am trying to use ODAC 12c Release 3 which includes support for Entity F

Answer 1

Late joining to this thread. A couple of folks upgraded to VS2017 (the rest in our team are still using VS2015 and planning to upgrade to VS2017). One of our projects was referencing Oracle.ManagedDataAccess.dll ver4.121.2.0 & Oracle.ManagedDataAccess.EntityFramework.dll ver6.121.2.0 via locally-referenced dlls.

All dev-workstations had oracle-odac-drivers ver4.122.1.0 & ver6.122.1.0 installed system-wide (GAC etc).

This kind of setup was working just fine for VS2015 but for some weird reason it was not working for VS2017. The culprit for VS2017 was that the Oracle.ManagedDataAccess.dll & Oracle.ManagedDataAccess.EntityFramework.dll where not getting copied over to the output folder of our entry-level asp.net project unless and until the locally referenced dlls where also updated to ver4.121.2.0 & ver6.121.2.0.

We didn't have time to look any further into all this but the aforementioned solution worked for VS2017.