Using Oracle XE trying to get Change notification to work

I saw the other thread, and I followed the links etc.
select * from user_change_notification_regs
Shows that my notification is there, I change the values in the table and then the query shows the notification is no longer pending.
I took the example from [http://www.oracle.com/webfolder/technetwork/tutorials/obe/db/dotnet/changenotification/ChangeNotification.htm] and made the changes, though I did change the table to be a table created under my user id.
The sample app gets all the data fine, etc. But no change is ever fired.
There is no trace file with errors or anything.
Any help would be appreciated.

For Oracle XE 11.2 with ODP.NET 11.2 R2 and higher, run the following command with SYSDBA privileges:
alter system set events '10867 trace name context forever, level 1';
Bug 10065474 in DCN required changes in both the DB and client versions. Oracle XE 11.2, and newer versions of the client will be mismatched and vice-versa. This ALTER statement will allow older and newer DB and client version to use DCN. You have to re-run this command after every DB server re-start.
Another alternative is to use an earlier ODP.NET version than 11.2 R2 with XE 11.2. And yet another alternative is to use Oracle DB 11.2.0.3 or higher with ODP.NET 11.2 R2 or higher.

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