I'm using Jboss 4.2.1. MDBs asynchronized calls SLSBs. i put a counter in SLSB's constructor. so i can know the current bean comes from pool or just be created. my problem is i set max size = 100. but after the MDB receives 10,000 messages(in 10 seconds). the nuber of SLSb will be 2000 something. because the pool only holds 100 instances, i guess container destroyed those old instances and created new instance. i don't know why it doesn't keep old instances in the pool. MDB | if(message instanceof ObjectMessage){ | String sessionBeanJNDI = message.getStringProperty("ApplicationName") + "LogLocal"; | | BaseLogLocal asynchronizedLocal = logLocalMap.get(sessionBeanJNDI); | if(asynchronizedLocal == null){ | BaseLogLocal baseLogLocal = (BaseLogLocal)cxt.lookup(sessionBeanJNDI); | logLocalMap.put(sessionBeanJNDI, (BaseLogLocal)Asynch.getAsynchronousProxy(baseLogLocal)); | asynchronizedLocal = logLocalMap.get(sessionBeanJNDI); | } | ObjectMessage objectMessage = (ObjectMessage)message; | Object object = objectMessage.getObject(); | | asynchronizedLocal.saveLog(object, msgID); | | }else{ | logger.error("Not an ObjectMessage" + msgID); | } | standardjboss.xml is default. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4115776#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...