Monitoring Components And Services; About Monitoring; Monitoring In The Enterprise Server - Sun Microsystems GlassFish Enterprise Server 2.1 Administration Manual

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C H A P T E R

Monitoring Components and Services

This chapter contains information about monitoring components using the Enterprise Server
Admin Console. This chapter contains the following sections:
"About Monitoring" on page 171
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"Enabling and Disabling Monitoring" on page 191
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"Viewing Monitoring Data" on page 193
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"Using JConsole" on page 209
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About Monitoring

"Monitoring in the Enterprise Server" on page 171
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"Overview of Monitoring" on page 172
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"About the Tree Structure of Monitorable Objects" on page 172
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"About Statistics for Monitored Components and Services" on page 175
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Monitoring in the Enterprise Server

Use monitoring to observe the runtime state of various components and services deployed in a
server instance of theEnterprise Server. With the information on the state of runtime
components and processes, it is possible to identify performance bottlenecks for tuning
purposes, aid capacity planning, predict failures, do root cause analysis in case of failures, and
ensure that everything is functioning as expected.
Turning monitoring on reduces performance by increasing overhead.
You can also use management rules to alert you of potential problems with your server, and
optionally take action when the server reaches certain performance thresholds. For more
information, see
1 8
Chapter 19, "Configuring Management Rules. "
171