Teradata Viewpoint is Teradata's strategic and innovative SOV (single operational view) for Teradata DB, Aster, and HDP Hadoop systems management and monitoring that enables Teradata's Unified Data Architecture (UDA).
A throbber is a visual indication of activity within the portlet, similar to the hourglass cursor in a Windows application. It "throbs" to notify the user that the portlet is in the middle of an activity and might be temporarily unresponsive.
How Do I Use a Throbber?
If you're using the TDPortalManager to process your AJAX calls, as in this tutorial, then it is easy to add a throbber to your portlet. You simply need an element in the portlet header with a class of "throbber-normal".
Implementing a Throbber for AJAX Refreshes
Continuing in your SkewedSessions portlet, you can easily display a throbber during AJAX refreshes by modifying the summary-content.jsp, as shown: