You can display completed alerts in the alert browser. Completed alerts are those that have already been removed from the alert browser and stored in the database.
Expand the monitor set that contains the monitor you require and choose Monitor (set) ®
Load monitor.
Display the Open alerts for that monitor.
Start the alert browser by choosing Display alerts and then choose Show alert history. Completed alerts are inserted into the alert browser according to the sorting scheme that is active.
Displaying Completed Alerts 