using System;
using System.Diagnostics;
using Oracle.DataAccess.Client;

namespace OracleNotification
{
    class Program
    {
        private static OracleDependency _dep;
        private const string ConnString = "DATA SOURCE=ORCL; User Id=USERNAME; Password=PASS;";

        static void Main(string[] args)
        {
            SetUpNotification();
            Console.ReadLine();
            DeRegisterNotification();
        }

        private static void SetUpNotification()
        {
            try
            {
                using (var conn = new OracleConnection(ConnString))
                {
                    var cmd = new OracleCommand("Select * from exchnge.JMORA_TEST3", conn);
                    conn.Open();
                    cmd.AddRowid = true;
                    _dep = new OracleDependency(cmd, false, 0, true);

                    _dep.OnChange += dep_OnChanges;
                    cmd.ExecuteNonQuery();
                    conn.Close();
                }
            }
            catch (Exception e)
            {
                Debug.WriteLine(e.Message);
            }
        }

        private static void dep_OnChanges(object sender, OracleNotificationEventArgs eventArgs)
        {
            var data = eventArgs.Details.DefaultView.Table.Rows[0][2].ToString();
            Debug.WriteLine(data);
        }

        private static void DeRegisterNotification()
        {
            using (var conn = new OracleConnection(ConnString))
            {
                conn.Open();
                _dep.RemoveRegistration(conn);
                conn.Close();
            }
        }
    }
}