N. Troubleshooting Guide : Running a Completed Application : Roles
 
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Roles
If you are using roles in an ABF or Vision application and you are the DBA or a privileged user, run an application with an invalid role identifier.
In these cases, Ingres does not warn you that the role or password is invalid. Ingres issues an error message if a user without the proper privileges tries to run the application with an invalid role identifier or password.