You're right about maxPoolSize restricting the number of connections from a client to the server. Maybe you've haven't configured it in the right place - there are several jboss-service.xml files in the Application Server directory. You want ${JBOSS_HOME}/server/${CONFIG}/deploy/ejb3.deployer/META-INF/jboss-service.xml, where you want to change the EJB3 Connector MBean: | <mbean code="org.jboss.remoting.transport.Connector" | name="jboss.remoting:type=Connector,name=DefaultEjb3Connector,handler=ejb3"> | <depends>jboss.aop:service=AspectDeployer</depends> | <attribute name="InvokerLocator">socket://${jboss.bind.address}:3873/?maxPoolSize=100</attribute> | <attribute name="Configuration"> | <handlers> | <handler subsystem="AOP">org.jboss.aspects.remoting.AOPRemotingInvocationHandler</handler> | </handlers> | </attribute> | </mbean> | where I set maxPoolSize=100 just for illustration. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4163721#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...