'Application Diagnostics is not a valid responsibility for the current user...' Error in R12.

Problem

When try to run Oracle Diagnostic the error prompt that  'Application Diagnostics is not a valid responsibility for the current user'

Solution

Must have one of the below roles to be assigned to the User to run Oracle Diagnostics.

• Diagnostics Super user
• Application Super user
• Application End User

1. Login to the system as Sysadmin User

2. Select the "User Management" responsibility

3. Click 'Users' in the right hand side menu

4. Enter 'User Name' and click 'Go'

5. Click 'Update' on the correct user

6. Click 'Assign Roles' button

7. Enter role name (or partial with %) you want to assign. You can enter any of the seeded roles (Diagnostics Super User Role, Application Super     User Role, Application End User Role), or your own one

8. Check the box before to the appropriate role and click 'Select' Button

9. Click 'Save' and 'Apply' Button.

10. Run Concurrent Program "Workflow Directory Services User/Role              Validation" with parameters 

         Batch Size - 100000

         Fix dangling users - Yes

         Add missing user/role assignments - Yes

         Update WHO columns in WF tables - No