how to execute update queries without using tsanames.ora through C#.NET

See more:

.NET

Oracle

C#3.5

I am working on C#,.net application using Oracle database.how to execute update queries without using tsanames.ora through C#.

For Ref#. following is my code

OracleConnection objConn = new OracleConnection();

string strQuery = "Update emp set Name = 'xxx' where Id='1000'";
           
objConn.ConnectionString = "Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=xxxxx)(PORT=1521))(CONNECT_DATA=(SID=xxxx)));User Id=xxx;Password=xxxxx;"
           
objConn.Open();
objCommand = new OracleCommand(strQuery, objConn);


if (objConn.State == ConnectionState.Open)
{
    objCommand.ExecuteNonQuery()
}

Connection is successfully gets open. but it's get stuck on objCommand.ExecuteNonQuery()/objCommand.ExecuteScalar() line. I have added code in try catch block but it's not throwing any error and execution stucks on this line.