.NET Core 3 Support

[pbros]

Hello,

What is the expected timeline for .NET Core 3 support now that it has been officially released?

Thank you

[alexkeh]

Oracle is currently running its .NET Core test suites against ODP.NET Core. We plan to release a new version that is .NET Core 3 certified on the NuGet Gallery in the next couple weeks, plus or minus. It's hard to give an exact timeline as we don't know what testing will find until we find issues, then fix them.

[pbros]

Do you know if the next release will also support ASP.Net Identity?

[alexkeh]

No, the release coming up in about a week or so will not have ASP.NET Identity support.

[lordkyuusei]

Hey!
Anything new since the last two weeks regarding .NET Core 3 support? I believe that this is a highly anticipated update for developers that wish to upgrade their oracle-db .net apps.

[alexkeh]

We're finishing up our testing this week. The release is planned for next week if no major showstoppers come up.

[0x4Graham]

Hey,

Would supporting .net core 3 fix an issue I am having when connecting to Oracle DB?

OraBufWriter:ReadResetResponse - Unexpected Packet received

ORA-04088: error during execution of trigger 'SYSTEM.LOGONTRG'.ORA-00604: errorred at recursive SQL level 1.

ORA-06502: PL/SQL: numeric or value error: character string buffer too small.

ORA-06512: at "SYSTEM.LOG_SESSION_INFO", line 38.ORA-06512: at line 2.

The issue I am having is rather interesting though. When running the application on my local, it can connect to the DB perfectly even though when I am using .NET Core 3.

But when I deploy to our Kubernetes instance I get the above error.

[alexkeh]

@grey007

Most likely, you are encountering a Kubernetes-specific related issue, not one related to .NET Core 3. Oracle hasn't seen an issue similar to yours in testing in a non-Kubernetes environment either. OTOH, we have seen a bug similar to yours in .NET Core 2 that was also running in Kubernetes.

[alexkeh]

ODP.NET Core 19.5 has just been released. This new version supports .NET Core 3.
https://www.nuget.org/packages/Oracle.ManagedDataAccess.Core/

[CJ18874]

Still not working with .NET Core 3. Any temporary workaround?

[alexkeh]

How is ODP.NET Core not working in .NET Core 3? Please share as much error info as you can. Otherwise, it's impossible to advise on a workaround.

[CJ18874]

PM> Scaffold-DbContext "User Id=<>;Password=<>;Data Source=<>/<>;" Oracle.EntityFrameworkCore -OutputDir Models
System.TypeLoadException: Method 'Create' in type 'Oracle.EntityFrameworkCore.Scaffolding.Internal.OracleDatabaseModelFactory' from assembly 'Oracle.EntityFrameworkCore, Version=2.0.19.1, Culture=neutral, PublicKeyToken=89b483f429c47342' does not have an implementation.
at Oracle.EntityFrameworkCore.Design.Internal.OracleDesignTimeServices.ConfigureDesignTimeServices(IServiceCollection serviceCollection)
at Microsoft.EntityFrameworkCore.Design.Internal.DesignTimeServicesBuilder.ConfigureDesignTimeServices(Type designTimeServicesType, IServiceCollection services)
at Microsoft.EntityFrameworkCore.Design.Internal.DesignTimeServicesBuilder.ConfigureProviderServices(String provider, IServiceCollection services, Boolean throwOnError)
at Microsoft.EntityFrameworkCore.Design.Internal.DesignTimeServicesBuilder.Build(String provider)
at Microsoft.EntityFrameworkCore.Design.Internal.DatabaseOperations.ScaffoldContext(String provider, String connectionString, String outputDir, String outputContextDir, String dbContextClassName, IEnumerable1 schemas, IEnumerable1 tables, Boolean useDataAnnotations, Boolean overwriteFiles, Boolean useDatabaseNames)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.ScaffoldContextImpl(String provider, String connectionString, String outputDir, String outputDbContextDir, String dbContextClassName, IEnumerable1 schemaFilters, IEnumerable1 tableFilters, Boolean useDataAnnotations, Boolean overwriteFiles, Boolean useDatabaseNames)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.ScaffoldContext.<>c__DisplayClass0_0.<.ctor>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass3_0`1.b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
Method 'Create' in type 'Oracle.EntityFrameworkCore.Scaffolding.Internal.OracleDatabaseModelFactory' from assembly 'Oracle.EntityFrameworkCore, Version=2.0.19.1, Culture=neutral, PublicKeyToken=89b483f429c47342' does not have an implementation.
PM>

[alexkeh]

@CJ18874 EF Core 3 is not supported yet. Only .NET Core 3 is supported. EF Core 3 requires a new implementation from provider writers, which is what the Oracle team is working for its next EF Core version.

[alexkeh]

The workaround is to use EF Core 2.

[LucaGabi]

How can I use EF Core 2 ?

I have to downgrade from dotnet core 3 ?