Database notifications, it only notifies one time

Question

Hello,
Following with the topic: Re: Socket communication in Oracle triggers
I've tried the oracle notifications and they work great. The problem is that once it fires my application event it does not fires it anymore. I mean, it only works for the first database change. Is there any way to configure that??
Here's my code so if anyone sees some mistake please tell it to me.
string sql = "SELECT * FROM IP_PDA"; // WHERE ID_IP_PDA=3";
string constr = "User Id=XXXXX;Password=XXXXX;Data Source=XXXX;Pooling=false";
try
con = new OracleConnection(constr);
con.Open();
OracleCommand cmd = new OracleCommand(sql, con);
OracleDependency dep = new OracleDependency(cmd);
dep.OnChange += new OnChangeEventHandler(OnDatabaseNotification);
cmd.ExecuteNonQuery();
}catch(Exception ex)
Debug.WriteLine(DateTime.Now.ToString() + " // ERROR AL REGISTRAR LA NOTIFICACION EN ORACLE -->" + ex.Message);
The event is like that
public static void OnDatabaseNotification(object src, OracleNotificationEventArgs args)
Thanks in advance!!!

Answer 1

I think I've solved it.
I've registered the dependency in the event so onces it fires the event it registers another.
I don't know if it's the better way to do it. If somebody knows a better way please tell me!
the event will look like that
public static void OnDatabaseNotification(object src, OracleNotificationEventArgs args)
cmd = new OracleCommand(sql, con);
dep = new OracleDependency(cmd);
dep.OnChange += new OnChangeEventHandler(OnDatabaseNotification);
cmd.ExecuteNonQuery();
Thanks!!