Oracle Databases (<12.1) do not know identity columns. Therefore the auto increment with the generated *.edmx files does not work. This package offers a patch to change the specified columns in the project's *.edmx files to identity columns.
See the Wiki for some more documentation and an example.
This package is available via NuGet at https://www.nuget.org/packages/AIT.EF.Oracle.IdentityPatch
To install AIT EF Oracle Identity Patch, run the following command in the Package Manager Console:
PM> Install-Package AIT.EF.Oracle.IdentityPatch
This software is provided by AIT GmbH & Co. KG.