This is the most basic model. It consists of a Manager and a number of Agents.
Each Agent collects performance information from their local server. The information that is collected is then managed collectively on the Manager.
The Manager can monitor the operation of managed services such as HTTP and DNS by regularly polling each service and confirming its response.
In the above diagram, the operation management client and the Manager are located on separate machines. However, if the Manager is installed on a Windows machine, it can be installed on the same machine as the operation management client.
Note
When the Manager is operating in a cluster system, the Manager and the operation management client cannot be installed on the same machine.
(Cluster system operation is a function provided by the Enterprise Edition.)
In addition to using the operation management client, the system administrator can conduct operation management from a Web browser located on a separate machine. In this case, the system administrator connects to the operation management client via HTTP as shown in the diagram above.
With normal operation, one Manager can manage up to approximately 50 Agents, but the maximum number of Agents that can be managed depends on the disk performance of the Manager.
By splitting the Manager physical disk into summary data, resource data and archive files, the number of Agents that can be managed by one Manager can be extended to approximately 300.
Refer to Section "Changing the PDB/Archive File Storage Location" in the Installation Guide for details on how to split the disk.
