Monitor Listeners

You can monitor the listeners for connectivity issues in an External Database System on the Listener details page.

Using Database Management, you can monitor local listeners, SCAN listeners, and ASM Net listeners. For information on listeners, see Oracle Database documentation.

To go to the Listener details page:

1. Go to the Database System details page.
2. In the Listener section, click the display name of the listener.

   The Listener details page is displayed.

On the Listener details page, you can:

• Click Listener information to view details such as the OCID of the listener, the associated External Database System, connector details, and listener type. In the Listener information panel, you can also perform tasks such as going to the associated Database System details page, or changing a connector.
• Click More actions to perform the following tasks:
  • Click Alarms to monitor the total number of open alarms and the number of alarms by severity. Note that an alarm is only displayed in Database Management if the OCID of the resource is specified using the resourceId dimension when creating the alarm. You can click the number of alarms to access the Alarms panel and review the list of open alarms. For information, see Monitor Alarms for External Database Systems.
  • Click Tags to add, view, edit, or remove tags. For information, see Working with Resource Tags.
• Monitor the listener in the Summary section for the time period selected in the Time period applied filter.
  • Monitoring status timeline: Monitor the status of the listener during the selected period of time.
  • Open alarms: Monitor the total number of open alarms and the number of alarms by severity.
  • Connections (per minute): Monitor the number of connections per minute during the selected period of time. This chart displays the maximum number of connections and the number of established, refused, and active connections. This chart helps determine if the performance issues with the database or other services supported by the listener are caused by an excessive load on the listener or host.
  • Serviced databases or Serviced ASM: Monitor the status of the databases or ASM instances supported by the listener, and click the display name to go to the corresponding details page.
• Click Work requests on the left pane under Resources to monitor the work requests pertaining to the listener.