How to connect with Oracle autonomous database?

Hi , I’m having issue to connect with Oracle autonomous database.

I’m trying to connect to Oracle free autonomous database from EF core 2.2 and i’m getting this erro.

2020-02-29 09:05:33.304378 ThreadID:1   (ERROR)   OracleDatabaseCreator.Exists() :  OracleException.Number: 12537
2020-02-29 09:05:33.307641 ThreadID:1   (ERROR)   OracleDatabaseCreator.Exists() :  Oracle.ManagedDataAccess.Client.OracleException (0x80004005): ORA-12537: Network Session: End of file
 ---> OracleInternal.Network.NetworkException (0x000030F9): ORA-12537: Network Session: End of file
   at OracleInternal.Network.OracleCommunication.DoConnect(String tnsDescriptor)
   at OracleInternal.Network.OracleCommunication.Connect(String tnsDescriptor, Boolean doNAHandshake, String IName, ConnectionOption CO)
   at OracleInternal.ServiceObjects.OracleConnectionImpl.Connect(ConnectionString cs, Boolean bOpenEndUserSession, OracleConnection connRefForCriteria, String instanceName)

Connection String format

 "ConnectionString": "User Id=ADMIN;Password=Password;Data Source=<adb....>.oraclecloud.com;"

so basically how to connect from these connection strings

Thank you 😃 !

[alexkeh]

I have published the following sample code to demonstrate Oracle EF Core connectivity to Autonomous Database for anyone that stumbles across this thread and needs a sample.

https://github.com/oracle/dotnet-db-samples/tree/master/samples/dotnet-core/ef-core/autonomous-db

[alexkeh]

@sumanaik123 Can you turn on ODP.NET tracing to figure out where ODP.NET is looking for its tnsnames.ora file and which one it uses? The trace file should help resolve why you see an ORA-12154. You can turn on tracing using the following settings for managed ODP.NET or ODP.NET Core.

            OracleConfiguration.TraceFileLocation = @"C:\traces";
            OracleConfiguration.TraceLevel = 7;