The Server List displays the online and offline servers in the
environment. You can select a server that is online to view its information or ping its
host. When you select a server, its host name and port number display in the left pane. If a
server is offline, the visual indicator in the status column shows an orange circle with an
exclamation mark. You cannot select or ping a server that is offline.
The Information option summarizes the basic system environment
information for the selected server, such as the number of processors and the operating
system. You can also view the amount of total and free physical memory, committed virtual
memory, swap space, class paths, and length of time the server has been available.
The Requests option displays all requests made to the server, for
example, transaction requests. You can drill down to see statistics for each request, such
as the total number of requests, the success and failure count, and the average response
The Data option displays performance monitoring statistics for the
selected server, such as EhCache statistics, connection, caching, and entity access. You can
enable or disable performance monitoring.
The Channels option displays the number of messages received, sent,
and failed to send. The list shows the last 100 messages that were generated. You can select
a message to view the details, such as the date and time stamp. You can also refresh the
list to show the most recently sent or received messages.
The Events option displays statistics generated by the event system.
The event summary displays the total number of events that the event handlers have generated
and processed. An event handler is a procedure that is called when a corresponding event
occurs. For an event to be processed by a handler, there has to be an event handler
registered for the event name and an available thread from the process pool as determined by
the event handler. A single event handler instance is associated with a single event name
The Tasks option displays statistics generated by the event system for
tasks and task handlers. Tasks are internal date and time actions scheduled for execution at
known repeated intervals. Tasks call task handlers. An empty task list indicates there are
no scheduled events. A task is not directly related to an event, because tasks are not
stored in the event system and do not require a task handler to generate historical events.
However, the event system initiates and processes task actions.