Monitoring WebSphere JVMs

Question

In order to monitor any normal Java process JVM, we can use the Attach API. Is there an API available to monitor a WebSphere JVM ?

websphere should have (depending on version) JMX support. So if it's application monitoring, you should look at those. If you need to monitor at a system level (monitor the VM), you can simply attach to that. — BigMike, Jul 06 '12 at 09:46
I heard that WebSphere programs wont allow you to look into their VMs and that is what i want to do. — Cygnus, Jul 06 '12 at 09:53
well, since it runs on a VM, you could just attach to that, have you tried this ? — BigMike, Jul 06 '12 at 09:55
I had my code ready that attaches to a VM and gathers data . But when i try to attach to WebSphere process, it says attach not supported/could not open MBeanServerConnection to the process. — Cygnus, Jul 06 '12 at 09:56
so you are using JMX.... Look into WebSphere specifics (e.g. starting JMX agent in WebSphere, configuring credentials and the likes of) check this Question here on SO (http://stackoverflow.com/questions/357095/how-do-you-enable-jmx-in-websphere) — BigMike, Jul 06 '12 at 09:58

score 3 · Accepted Answer · edited May 18 '13 at 09:35

You may use PMI (Performance Monitoring Infrastructure) to monitor both JVM and Java EE related metrics. PMI monitoring data my me accessed using

Tivoli Performace Viewer which is embedded in administrative console
PMI client (deprecated)
PerfServlet (if you don't want to use JMX, this servlet presents same info with XML over HTTP)
JMX Interface to PMI

You may find following page helpful since you intend to use JMX, as it contains sample code for implementing a JMX client to access PMI data;

You may find information about other methods at monitoring section of Infocenter.

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