MQSeries.net :: View topic - Issue with classloader and the mqjbnd04.dll

Marrion

I have MQ/Webpshere running together locally for development (via my app developer). I am not using JMS (have not set it up yet) but am running with the com.ibm.mq.* classes imported and getting mgrs, queues, messages, etc just fine... BUT when ever I make a change to the code I have to restart the server otherwise I get this error:

[02.08.09 10:06:38:818 CDT] 4cc7aba4 WebGroup X Servlet Error: Native Library C:\Program Files\MQSeries\Java\lib\mqjbnd04.dll already loaded in another classloader: java.lang.UnsatisfiedLinkError: Native Library C:\Program Files\MQSeries\Java\lib\mqjbnd04.dll already loaded in another classloader
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1434)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1358)
at java.lang.Runtime.loadLibrary0(Runtime.java:766)
at java.lang.System.loadLibrary(System.java:849)
at com.ibm.mq.server.MQSESSION$1.run(MQSESSION.java:179)
at java.security.AccessController.doPrivileged(Native Method)
at com.ibm.mq.server.MQSESSION.<clinit>(MQSESSION.java:175)
at com.ibm.mq.MQSESSIONServer.getMQSESSION(MQSESSIONServer.java:67)
at com.ibm.mq.MQSESSION.getSession(MQSESSION.java:329)
at com.ibm.mq.MQManagedConnectionJ11.<init>(MQManagedConnectionJ11.java:149)
at com.ibm.mq.MQBindingsManagedConnectionFactoryJ11._createManagedConnection(MQBindingsManagedConnectionFactoryJ11.java:139)
at com.ibm.mq.MQBindingsManagedConnectionFactoryJ11.createManagedConnection(MQBindingsManagedConnectionFactoryJ11.java:157)
at com.ibm.mq.StoredManagedConnection.<init>(StoredManagedConnection.java:80)
at com.ibm.mq.MQSimpleConnectionManager.allocateConnection(MQSimpleConnectionManager.java:150)
at com.ibm.mq.MQQueueManager.obtainBaseMQQueueManager(MQQueueManager.java:666)
at com.ibm.mq.MQQueueManager.construct(MQQueueManager.java:615)
at com.ibm.mq.MQQueueManager.<init>(MQQueueManager.java:392)
at graco.mqseries.beans.connect.MsgInBean.sendMsg(MsgInBean.java:60)
at graco.mqseries.beans.claims.NetPricingBean.sendMsg(NetPricingBean.java:470)
at graco.mqseries.beans.claims.NetPricingBean.doPriceRequest(NetPricingBean.java:507)
at graco.sql.servlets.claims.ProcessRepairParts.performTask(ProcessRepairParts.java:100)
at graco.sql.servlets.claims.ProcessRepairParts.doPost(ProcessRepairParts.java:21)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.servlet.engine.webapp.StrictServletInstance.doService(ServletManager.java:827)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet._service(StrictLifecycleServlet.java:159)
at com.ibm.servlet.engine.webapp.IdleServletState.service(StrictLifecycleServlet.java:286)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet.service(StrictLifecycleServlet.java:106)
at com.ibm.servlet.engine.webapp.ServletInstance.service(ServletManager.java:472)
at com.ibm.servlet.engine.webapp.ValidServletReferenceState.dispatch(ServletManager.java:1012)
at com.ibm.servlet.engine.webapp.ServletInstanceReference.dispatch(ServletManager.java:913)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:499)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:278)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:105)
at com.ibm.servlet.engine.srt.WebAppInvoker.doForward(WebAppInvoker.java:67)
at com.ibm.servlet.engine.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:123)
at com.ibm.servlet.engine.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:67)
at com.ibm.servlet.engine.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:122)
at com.ibm.servlet.engine.oselistener.OSEListenerDispatcher.service(OSEListener.java:315)
at com.ibm.servlet.engine.http11.HttpConnection.handleRequest(HttpConnection.java:60)
at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:313)
at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:242)
at com.ibm.ws.util.CachedThread.run(ThreadPool.java:122)

I was wondering if this error is normal and if there is really nothing I can do except restart my server everytime I make a code change or is there something I am doing wrong to cause it? Also - would setting up JMS and using code that calls JMS prevent me from having to restart everytime there is a code change? It's really tedious to develop when I have to restart everytime.

If JMS is the way to go - anyone have a link to some instructions on setting up JMS for the single server version of WAS for use via the WAS application developer?

Thanks! Marrion