Creating first Alert - not sending email

Question

Hi guys, hoping someone can point me in the right direction for creating an Alert.
I've followed :
How Do You Set Up A Test Event Alert That Sends An Email. [ID 455688.1]
However once I've got my alert created, when I carry out the step to update the table which should result in an email, I get nothing.
Can anyone suggest what might be wrong ?
Contents of the doc I followed :
How do you set up a test event alert that sends an email?
Solution
1. Navigate to the Alert > Define window in Oracle Alert manager.
2. Use the 'Alert' for the application.
3. Check the enabled checkbox.
4. Enter 'Test Event Alert Email' for the Name.
5. Select Event tab.
6. Enter 'Alert' for the application.
7. Enter the 'ALR_DISTRIBUTION_LISTS' table.
8. Check either the 'After Insert' or 'After Update' check box, or both.
9. Enter the following select:
SELECT 123245
into &test_num
FROM DUAL
Click on the Verify button to ensure select works.
10. Select 'Actions' button.
11. Enter 'Test Email' for Action Name.
12. Set Action Level to Detail.
13. Drill down on 'Actions Details' button.
14. Set 'Action Type' to Message.
15. In the 'To' field, enter your valid email address.
16. In Subject field enter 'Test Periodic Alert Email'
17. Select Text and enter 'Test &test_num'.
18. Save and close out to Alert Define Window.
19. Select Action Sets button.
20. Enter 1 for Seq number.
21. Enter 'Test Email Number'
22. Check the Enabled box.
23. Drill down on 'Action Set Details' button.
24. Select 'Outputs' tab.
25. Check the 'Check for Duplicates' box.
26. Select 'Members' tab.
27. Check the enabled box for the Action.
28. Save and exit out to the Alert Define Window.
29. Drill down on 'Alert Details' button.
30. Select 'Outputs' tab.
31. Enter 'test_num' for description.
32. Enter 10 for Detail and Summary
33. Enter 999,999 for Number Form.
34. Check the 'Check For Duplicates' box.
35. Select the 'Installation' tab.
36. Enter 'APPS' for the Oracle ID.
37. Enter the current Operating Unit being used.
38. Check the Enabled check box.
39. Save and exit form.
40. Navigate to Alert > Distribution Lists.
41. Enter 'Application Object Library' for the application.
42. Enter 'Test Email Group' for Name.
43. Enter your email address for the 'To' Mail Recipients.
44. Save.
45. Check for alert to run under the Request > View Window.
46. If it completes successfully, check for email.

Answer 1

I've found the workflow administration screen and theres a section which says :
Business Event Local System
Enter the Workflow Business Event System Name and System Processing Status.
System Name          DEV.xxxxxx.COM
     This is the system name of the database where this instance of Oracle Workflow is installed.
Status          Enabled
is that it ?