Laxmi Chalasani [https://community.jboss.org/people/laxminc] created the discussion "jboss java application creating numerous connections on machine" To view the discussion, visit: https://community.jboss.org/message/817887#817887 -------------------------------------------------------------- Hello, We are using Jboss-5.1.0.GA as our messaging server for our application. We have the maxclientsize set to 300. But we are seeing numerour connections on the application machine when we do netstat. Also the java application is crashing unable to process the Messages from the DB. Below is the snippet of code we are using to QueueConnections. We are using java 1.6. We are havinng issues after upgarding to jboss5 and jdk1.6. We had no issues with the load when running on application on java 1.3 using jboss-3.2.2. We are using mssql 2000 for database for JBOSS and Java application. We see the below exception when clients have issue connecting to receive the jboss messages: CommunicationException: null 1. Threw Exception...javax.naming.CommunicationException [Root exception is java.rmi.ConnectException: Connection refused to host: 172.17.100.202; nested exception is: java.net.ConnectException: Connection refused: connect] javax.naming.CommunicationException [Root exception is java.rmi.ConnectException: Connection refused to host: 172.17.100.202; nested exception is: java.net.ConnectException: Connection refused: connect] at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:839) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:686) at javax.naming.InitialContext.lookup(InitialContext.java:392) at com.adsretail.nextor.jms.ADS_JMS_Server.hostStart(ADS_JMS_Server.java:131) at com.adsretail.nextor.jms.ADS_BaseReceive_MQ.checkConnection(ADS_BaseReceive_MQ.java:105) at com.adsretail.nextor.jms.ADS_BaseReceive_MQ.reinitialize(ADS_BaseReceive_MQ.java:171) at com.adsretail.nextor.jms.ADS_BaseReceive_MQ.onException(ADS_BaseReceive_MQ.java:177) at org.jboss.jms.client.remoting.ConsolidatedRemotingConnectionListener.handleConnectionException(ConsolidatedRemotingConnectionListener.java:113) at org.jboss.remoting.ConnectionValidator$1.run(ConnectionValidator.java:744) Caused by: java.rmi.ConnectException: Connection refused to host: 172.17.100.202; nested exception is: java.net.ConnectException: Connection refused: connect at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:601) at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:198) at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:184) at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:110) at org.jnp.server.NamingServer_Stub.lookup(Unknown Source) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:726) ... 8 more Caused by: java.net.ConnectException: Connection refused: connect at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333) at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366) at java.net.Socket.connect(Socket.java:519) at java.net.Socket.connect(Socket.java:469) at java.net.Socket.<init>(Socket.java:366) at java.net.Socket.<init>(Socket.java:180) at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:22) at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:128) at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:595) ... 13 more Any input is appericiated. Thanks, Laxmi QueueConnectionFactory hostQcf = null;             if(appServer.equalsIgnoreCase("JBOSS"))             {        //JBOSS environment        Hashtable<String,String> env = new Hashtable<String,String>();        env.put(Context.INITIAL_CONTEXT_FACTORY,"org.jnp.interfaces.NamingContextFactory");        env.put(Context.PROVIDER_URL, "jnp://" + ipAddress + ":1099");        env.put(Context.OBJECT_FACTORIES, "org.jboss.naming:org.jnp.interfaces");        ErrorLog1.getInstance().logMessage("ipAddress: " + ipAddress);        //cgduan jdk1.6 update        if (JAVA_VERSION.indexOf("1.6") == -1){          hostCtx = NamingManager.getInitialContext(env);          hostQcf = (QueueConnectionFactory)hostCtx.lookup("OIL2ConnectionFactory");//SCO3181 nt 11/25/2003 //SC04617 nt 08/30/04              }else{               hostCtx_JDK16 = new InitialContext(env);               hostQcf = (QueueConnectionFactory) hostCtx_JDK16.lookup("ConnectionFactory");              }      //JBOSS environment             } :::: hostConn    = hostQcf.createQueueConnection();             hostSession = hostConn.createQueueSession(false, QueueSession.AUTO_ACKNOWLEDGE);    //TS8577 mduan    qServerStart = true; public  void recvAsync() throws Exception     {         try         {          if (JAVA_VERSION.indexOf("1.6") == -1){           hostConn.setExceptionListener(this);//SC0070 nt 08/14/2007              hostQueue = (Queue)hostCtx.lookup(getQueueName());              QueueReceiver recv = hostSession.createReceiver(hostQueue);              recv.setMessageListener(this);              hostConn.start();          }else{                    hostConn.setExceptionListener(this);           hostQueue = (Queue)hostCtx_JDK16.lookup(getQueueName());                 // create a queue receiver                 QueueReceiver recv = hostSession.createReceiver(hostQueue);                 // set an asynchronous message listener                 recv.setMessageListener(this);                 hostConn.start();          }         } catch(Exception e) {          throw e;         }     } -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/817887#817887] Start a new discussion in JBoss Messaging at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]