Availability of a service indicates whether the service is available to the users at any given point in time. The rules for what constitutes availability may differ from one application to another. For example, for a Customer Relationship Management (CRM) application, availability may mean that a user can successfully log onto the application and access a sales report. For an email application, it may be mean that the user can access the application, send and receive emails.
Enterprise Manager allows you define the availability of a service as follows:
Service Tests: The availability of the service can be defined in terms of availability of the services tests that are being monitored. A service is available as long as the critical functions such as accessing email, generating a sales report etc. can be performed. Beacons are used to execute the service tests from different geographical locations. You can designate one or more beacons as the "key beacons" that will be used to run the service test. The service test is considered available if any of the key beacons can execute it successfully. Availability may vary across locations. A service can have multiple tests defined and one or more "key tests" can be used to denote the availability of a service.
System Components: The availability of the service can also be based on the underlying system that hosts the service. A system consists of components such as hosts, databases and other targets. You can designate one or more components as "key components". The service is considered available as long as the key components are up and running.
Note: The availability of an aggregate service is based on the availability of its constituent services.
Related Topics
Enterprise Manager Information Roadmap
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