An alert notification indicates that an alert has been generated.
Alert notifications are produced when alerts fire. An alert fires if the performance indicator on which it is based passes the threshold or state specified for the severity level of warning. If the performance indicator passes the threshold or state specified for the severity level of critical, the alert fires again and another notification is generated.
Detailed alert notifications appear in the Alert Monitor view. In addition, alerts appear as yellow ! symbols in the heat chart. You can set an alert to also send an e-mail message when it fires.