The Enterprise Manager Always-On Monitoring application provides the ability to monitor critical target status and metric alerts when the Oracle Management Service is unavailable. The service continuously monitors critical targets through the Enterprise Manager Agent and can be easily configured to send email notifications for these events to administrators.

Always-On Monitoring can be configured to send notifications at any time, but is particularly useful when experiencing downtime of your central Enterprise Manager site for maintenance operations such as upgrade and patching.

The Always-On Monitoring is synchronized with Enterprise Manager to reuse the configuration of monitored targets as well as requisite notification data such as notification contacts and email gateway configuration. Once properly configured and synchronized, the service will receive alerts from Enterprise Manager Agents and send email notifications to the appropriate administrators.

This chapter covers the following topics: