You can delete a single alert, or multiple alerts at a time.
In the Explorer panel of Enterprise Manager, select an application server, project component, or message server.
Click the Alerts tab or node.
The alerts for the selected component appear.
Select the alert.
Click the Delete icon or press the Delete key.
A confirmation dialog box appears.
Click OK.
Select the alerts that you want to delete.
To select all of the alerts, click the Select All icon.
To select alerts that may or may not be contiguous, use the CTRL key.
To select a contiguous range of alerts, click an alert at one end of the range, press the SHIFT key, and click the alert at the other end of the range.
Click the Delete icon or press the Delete key.
A confirmation dialog box appears.
Click OK.
Click the Delete All icon.
A confirmation dialog box appears.
Click OK.
If an alert does not currently appear because of a filter, then the alert is not deleted. See Filtering Alerts.