Hi everyone, I am using JBoss AS 4.0.5 + MySQL. And I am trying to test the perfomance of my J2EE application under very high workload. Sometimes the standard console will printout: "org.jboss.util.NestedSQLException: No ManagedConnections available within configured blocking timeout ( 30000 [ms] ); - nested throwable: (javax.resource.ResourceException: No ManagedConnections available within configured blocking timeout ( 30000 [ms] ))" I know this is because my system runs out of ManagedConnections, which means I probably need to increase the "max-pool-size". My question is if there is any way I can count how many times this exception is thrown inside my J2EE application? That is, is there any MBean or any other things record the number of times JBoss throws an exception so that my program can access to determine it got a problem. Hope I explain my question clearly. Thank you View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4131232#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...