Here’s an updated solution I found as I had the same problem with Visual Studio 2015: ado.net model for db is gone Visual studio 2015 Paraphrasing: Change your installation of Visual Studio 2015 and include the Microsoft SQL Server Data Tools (via Control Panel > Program & Features > VS2015 > Change > Modify > … Read more
This problem occurs to me when a try to define type and size of a column with DataAnnotations. BAD: [Column(TypeName=”VARCHAR(254)”)] public string ColumnName { get; set; } OK: [MaxLength(254)] [Column(TypeName=”VARCHAR”)] public string ColumnName { get; set; }
I finally was able to to use ODP with EF6. I did the following to make it work :- First Installing ODAC 12c Release 3 which includes support for Entity Framework 6 Code First and Code First Migrations; NuGet, .NET Framework 4.5.2; and ODP.NET, Managed Driver XML DB. As per http://www.oracle.com/technetwork/topics/dotnet/whatsnew/index.html Adding two references , … Read more