Options for Discovering Targets
You can discover targets using either of the following methods:
Autodiscovery Process
For discovery of a host, the autodiscovery process enables a Management Agent running on the host to run an Enterprise Manager job that scans for unmanaged hosts. You then convert these unmanaged hosts to managed hosts by deploying Management Agents on these hosts. Next, you search for targets such as databases or other deployed components or applications on these managed hosts, and finally you promote these targets to managed status.
For discovery of targets, the autodiscovery process enables you to search for targets on the host and then add these targets using Enterprise Manager.
The benefit of using this process is that as new components are added to your infrastructure, they can be found and brought under management on a regularly-scheduled basis.
Guided Discovery Process
The guided discovery process enables you to explicitly add a target to bring under management. The discovery wizard guides you through the process and most of the specifications required are filled by default.
The benefits of using this process are as follows:
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You can find targets with less effort.
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You can find a new database that has been added recently even if autodiscovery has not been run.
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You can find a non-promoted database that already exists in autodiscovery results, but has a change in details. For example, the port.
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You eliminate unnecessary consumption of resources on the Management Agent when discovery is not needed.
Declarative Process
Declaring target monitoring properties enables you to manually specify all the details required to discover the database target, such as the host name and location, target name and location, and other specific information. This process is generally used when the autodiscovery process and guided discovery process fails to discover the target that you want to add.