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IBM Tivoli Monitoring > Version 6.3 > User's Guides > Agent Builder User's Guide > Monitor Java Management Extensions (JMX) MBeans IBM Tivoli Monitoring, Version 6.3
JMX notifications
In addition to providing monitoring data when requested, some MBeans also provide notifications.
A notification is an object that is generated by an MBean that is passed to registered listeners when an event occurs.
Agents that are built by the Agent Builder can define attribute groups that contain values from notifications rather than MBeans.
When the agent is started, a notification listener is registered with each MBean that matches the MBean pattern of the attribute group. The attribute group then displays one row per notification received. Each column contains one item of data from the notification. The data wanted from the notification is defined by a column value similar to the way column data is defined for MBeans.
For non-event based attribute groups, data is collected when needed. For event-based attribute groups, the agent maintains a cache of the last 100 events received. These events are used to respond to requests from the Tivoli Enterprise Portal. The events are forwarded immediately for analysis by situations and warehousing.
Parent topic:
Monitor Java Management Extensions (JMX) MBeans