how to set up an alert in Viewpoint or other means, if DBS is reset on its own or manually done using TPARESET. - response (2) by gryback

I'd suggest setting up a "System Health" alert under the Admin - Teradata Systems - Alerts - System Health. A related DevX article may also be worth reading:
http://developer.teradata.com/blog/stever/2011/08/understanding-the-system-health-equation