Oracle Connection lost contact with .NET core 3.0

Im writing ASP.NET Core application and trying to Oracle DB, getting the following error.

Im using .NET core 3.0 Framework and Oracle.Managed.DataAccess.Core for Oracle connection.

Thanks, Prashanth

Error:

Oracle.ManagedDataAccess.Client.OracleException

HResult=0x80004005

Message=ORA-03135: Connection lost contact

Source=Oracle Data Provider for .NET, Managed Driver

StackTrace: at OracleInternal.ConnectionPool.PoolManager 3.Get(ConnectionString csWithDiffOrNewPwd, Boolean bGetForApp, OracleConnection connRefForCriteria, String affinityInstanceName, Boolean bForceMatch) at OracleInternal.ConnectionPool.OraclePoolManager.Get(ConnectionString csWithNewPassword, Boolean bGetForApp, OracleConnection connRefForCriteria, String affinityInstanceName, Boolean bForceMatch) at OracleInternal.ConnectionPool.OracleConnectionDispenser 3.Get(ConnectionString cs, PM conPM, ConnectionString pmCS, SecureString securedPassword, SecureString securedProxyPassword, OracleConnection connRefForCriteria) at Oracle.ManagedDataAccess.Client.OracleConnection.Open() at Dapper.SqlMapper.d__140'1.MoveNext() in C:\projects\dapper\Dapper\SqlMapper.cs:line 1079 at System.Collections.Generic.List'1..ctor(IEnumerable'1 collection) at System.Linq.Enumerable.ToList[TSource](IEnumerable'1 source) at Dapper.SqlMapper.Query[T](IDbConnection cnn, String sql, Object param, IDbTransaction transaction, Boolean buffered, Nullable'1 commandTimeout, Nullable'1 commandType) in

.... .... ....

at Microsoft.Extensions.Internal.ObjectMethodExecutor.Execute(Object target, Object[] parameters) at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.SyncActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments) at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeActionMethodAsync() at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeNextActionFilterAsync()

This exception was originally thrown at this call stack: OracleInternal.Network.ReaderStream.Read(OracleInternal.Network.OraBuf)

Inner Exception 1: NetworkException: ORA-03135: Connection lost contact

Inner Exception 2: SocketException: An established connection was aborted by the software in your host machine.`