Configuring the Oracle Alert Log Panel display (4229614)

Use the Alert Log view to configure the retrieval and display settings for the Alerts | Alert Log panel. In addition, this view is used to define default settings for invoking alarms based on the collected alerts.

IMPORTANT: While alerts whose severity type is Informational are collected and displayed on the Alert Log panel, alarms are invoked only for alerts whose severity type is Warning or higher.

Use this view to define the following settings:

• Minimal severity for invoking summary alarms — can be either turned off or set to one of the defined severity values, that is: Warning, Critical or Fatal.
  IMPORTANT: By default, the value of this parameter is Critical.
• Minimal severity for invoking alarms — can be either turned off (the default setting) or set to one of the defined severity values: Warning, Critical or Fatal.
• Number of rows to collect from logs — the maximum number of rows that would be retrieved from the alert logs.
• Display under a pre-defined name in the Alert Log panel — using the Match List pane. This pane contains a default list of expressions within the alert logs that are to be retrieved and displayed in the Alert Log panel under a pre-defined name, category and severity.
• Exclusion from the Alert Log panel display — using the Ignore List pane, which contains a default list of alerts that are to be excluded when setting the alert logs display.
  IMPORTANT: Only messages that are explicitly defined in the Ignore List will not be displayed. Messages that were not added to either the Match or Ignore lists appear under name Other, type Oracle alert messages and severity Informational. Therefore, ensure that messages that need not be displayed are added to the Ignore List.

Both the Match List and the Ignore List panes can be customized by adding, editing or removing alert logs. Each filter can be enabled or disabled separately by clicking Edit and selecting or clearing the Enabled check box. Alternatively, to enable or disable all of the filters, click the Enable All or Disable All button.

To add an alert to the Match List:

1. Click Add.
   The Add an Alert to the Match List dialog box opens.
   Use this dialog box to configure the alert filter by means of the following fields:
   • Filter Name — used for assigning a name to the filter. • Severity — used for assigning a severity for the alert. Use this field to set the type of the alarm that is invoked as a result of the alert, or to define that the alert is informational and therefore invokes no alerts. • Type — used for entering a filter type, either one of the predefined types or a new type.
   • Expression — identifies the text that is to be extracted as a message from the alert log and displayed in the Message column of the Alert Log panel | Alert Log Messages table. This text usually contains the beginning of the message and a wildcard (for example: ORA-12012.*).
   IMPORTANT: Alert filters are enabled automatically upon addition. To disable a filter, use the Edit button.
2. Click Add to save your settings.
   Each newly added alert filter is enabled by default. To disable the filter, click Edit and then clear the Enabled check box.

To edit an alert: 

1. Click the requested alert log.
2. Click Edit.
   The Edit the Selected Alert dialog box opens.
3. Use this dialog box to configure the alert by means of the same fields used for adding it: Filter Name, Severity, Type, and Expression.
4. To disable the filter, clear the Enabled check box.
5. Click Set to save your settings.
6. At the bottom of the view, click Save changes.