A Management event is an event for notifying events such as failure or resource depletion that occurs in the J2EE server in the management domain, or the SFO server, to the Management Server. A Management event can be issued when the message is output while the J2EE server, batch server, and SFO server are running. By defining the operations, to be performed when a Management event is notified, in the Management Server, the action can be executed automatically when the management event occurs. This action is called a Management action.

Note

From among the messages that are output by the J2EE server, batch server, and SFO server, the following messages are not used for issuing a Management event:

• KDJE90001-E
• KDJE90002-E
• KDJE90003-E
• KDJE90005-W
• KDJE90006-W
• KDJE90009-W

For details on the messages, see the manual uCosminexus Application Server Messages.

The following figure shows the flow from the time a Management event is issued until a management action is executed in the Management Server:

Figure 9-1 Management event and action

In the example, a management event is issued when the message is output to indicate that the threshold value specified in the resource depletion monitoring functionality has been exceeded. The flow of processes in the figure are explained below:

1. A management event is issued when the threshold value specified in the resource to be monitored is exceeded.
2. The management event is notified to the Management Server.
3. The process is executed automatically according to the management action definitions defined in the Management Server.
   In the definition of the management action, define the action corresponding to the Management event sent from the J2EE or batch server. The management action must be defined in advance.
   

Note that when the resource depletion monitoring functionality is used to monitor the memory, you can pre-detect full garbage collection. When you pre-detect the full garbage collection while the memory is being monitored, its information is notified to the Management Server as a management event. If the management action is defined to shutdown and restart the service in a J2EE or batch server, and full garbage collection event is notified by the management event, then the defined action is automatically executed for the J2EE or batch server. This helps to prevent the termination of the request processing.