[jboss-user] [Beginners Corner] - Re: How to reliably count active sessions (re-post)

[kjkoster]

Dear Paul,

*ouch* JDK 1.4 is indeed not the best JDK to have from a sysadmin point of view. It basically makes you blind and deaf.

Something like twiddle was what I had in mind. I never used it myself (I use Zapcat and Zabbix for monitoring, and jconsole for occasional troubleshooting). I'm afraid that I cannot help you with making it work. I'm sure this forum and Google will provide ample support, though.

Jmx-console is JBoss' web-based version of JConsole and it's indeed massive. JBoss is built on top of JMX and that shows. Good thing is that what you want to monitor is there. It's just a matter of isolating it in the barrage of mbeans and attributes. :-)

There is plenty of information out there to get you started with jconsole. Search for posts of Peter Johnson on this forum. Here is something to get you started: http://www.cecmg.de/doc/tagung_2007/agenda07/24-mai/2b4-peter-johnson/index.html

Please be aware that JMX uses RMI as a transport, and that RMI uses dynamically allocated ports. Check that you don't have a firewall interfering.

Kees Jan
http://java-monitor.com/forum

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