We are using Tomcat 7.0.23 with jdk1.6.0_30 on Solaris 10, mod_ajp 1.3 and Apache 2.2.21.
I'm using the following code to retrieve memory information from our JMX server: ObjectName contextObjectName = new ObjectName("java.lang:type=Memory"); CompositeData memoryUsage = (CompositeData)server.getAttribute(contextObjectName, "HeapMemoryUsage"); This works really well most of the time but we occasionally we get this exception when trying to retrieve HeapMemoryUsage: javax.management.RuntimeMBeanException: java.lang.IllegalArgumentException: committed = 1607688192 should be < max = 1607270400 After some digging, I found that it is a bug in the JVM (It occurs in 1.7, too): http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7100266 My questions for the list then are has anyone else come across this and, if so, how did you get around it? Is there an alternative way for retrieving used and committed memory from a JMX MBean? Thank you, -Kari _________________________________ Kari Scott Senior Programmer kari.sc...@cdw.com<mailto:kari.sc...@cdw.com> CDW 5520 Research Park Drive Madison, WI 53711 Office: 608 298 1223 Fax: 608 288 3007