title: Too many mq connections for a server connection channel which are not created by queue
body: <p>As per our configuration, we have WAS version is 8.5.5.11, IBM MQ version 7.5.0.3. We are using 2 channels to connect to WMQ, one with MAXINST set to 250 and one with 500. SHARECNV is set to 10 for both. Now we have an upper limit of making maximum 2000 connections in a queue manager but we end up crossing that limit after 3-4 days of continuous running of WAS Server.
  After doing some analysis we can see that at any point of time we have only 120-160 active connections. DIS CONN command gives shows a lot of connections with OBJNAME, OBJTYPE empty and ASTATE "NONE". Even these connections are made from our WAS Server IP but it seems they are not created by queues as OBJTYPE is not Queue for these connections. These connections keep on growing over a period of time and ultimately we reach our limit of 2000 connections.</p>
  
  <p>Can somebody help in identifying why these connections are getting created and make sure they get closed like normal idle connections.
  This is how connection are made and closed in the application: We have an abstrack bean class which is extended by all MDB's.</p>
  
  <pre><code>@MessageDriven(activationConfig = {
  @ActivationConfigProperty(propertyName = "acknowledgeMode", propertyValue = "Auto-acknowledge"),
  @ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue") })
  public class TrackBeanV2 extends AbstractServiceBean implements MessageListener {//code}
  </code></pre>
  
  <p>The abstrack bean handles creation and closing of connections in following manner:</p>
  
  <pre><code>public abstract class AbstractServiceBean {
  @Resource(name = "myQCF", type = QueueConnectionFactory.class, shareable =     true, description = "Reply Connection Factory")
  private ConnectionFactory replyCF; 
  
  @PostConstruct
  private void postConstruct() {
      replyConnection = replyCF.createConnection();
  
  }  catch (JMSException e) {
      throw new RuntimeException("Failed to create JMS Connection");
  }
  
  }
  @PreDestroy
  private void preDestroy() {
  try {
      replyConnection.close();
  } catch (JMSException e) {
      throw new RuntimeException("Failed to close JMS connection", e);
  }
  }
  
  private void sendResponseMessage(String outputMessageText, String  jmsMessageID , Destination replyDestination) {
  TextMessage replyMessage = null;
  try {           
      createSession();    
      createProducer();
      replyMessage = createReplyMessage(outputMessageText , jmsMessageID);    
      sendReply(replyMessage, replyDestination);  
      closeProducer();
      closeSession();
  } catch (JMSException exp) {
      handleException(exp);
  }
  }
  private void createSession() throws JMSException{
  replySession = replyConnection.createSession(true, 0);                  
  }`
  private void createProducer() throws JMSException{                              
  replyProducer = replySession.createProducer(null);      
  }
  
  private void closeSession() throws JMSException {
  if (replySession != null) {
      replySession.close();
  }
  }
  
  private void closeProducer() throws JMSException{
  if (replyProducer != null) {            
      replyProducer.close();          
  }
  }   
  private void sendReply(TextMessage replyMessage, Destination replyDestination) throws JMSException {    
  logMessages(replyMessage.getText(), "RESPONSE MESSAGE");
  replyProducer.send(replyDestination, replyMessage);
  }
  </code></pre>
  
  <p>An output of below command </p>
  
  <pre><code>echo "DIS CONN(*) TYPE(*) CONNAME CHANNEL OBJNAME OBJTYPE" | mqsc -e -m QPDC1GC2 -p width=1000 | grep -o '^\w\+:\|\w\+[(][^)]\+[)]' | awk -F '[()]' -v OFS="," 'function printValues() { if ("CHANNEL" in p) { print p["CHANNEL"], p["CURSHCNV"], p["CONNAME"],p["CHSTADA"],p["CHSTATI"],p["LSTMSGDA"],p["LSTMSGTI"],p["OBJNAME"],p["OBJTYPE"],p["ASTATE"],p["APPLDESC"],p["APPLTAG"] } } /^\w+:/ { printValues(); delete p; next } { p[$1] = $2 } END { printValues() }' | grep MYCHANNEL 
  </code></pre>
  
  <p>looks like this </p>
  
  <pre><code>A.QMGR1.MYCHANNEL,,10.217.278.15,,,,,VALIDATE_GET_01,QUEUE,ACTIVE,WebSphere MQ Channel,WebSphere MQ Client for Java
  A.QMGR1.MYCHANNEL,,10.217.278.15,,,,,,,NONE,WebSphere MQ Channel,WebSphere MQ Client for Java
  A.QMGR1.MYCHANNEL,,10.217.278.15,,,,,,,NONE,WebSphere MQ Channel,WebSphere MQ Client for Java
  A.QMGR1.MYCHANNEL,,10.217.278.15,,,,,,,NONE,WebSphere MQ Channel,WebSphere MQ Client for Java
  A.QMGR1.MYCHANNEL,,10.217.278.15,,,,,,,NONE,WebSphere MQ Channel,WebSphere MQ Client for Java
  A.QMGR1.MYCHANNEL,,10.217.278.15,,,,,,,NONE,WebSphere MQ Channel,WebSphere MQ Client for Java
  A.QMGR1.MYCHANNEL,,10.217.278.15,,,,,VALIDATE_GET_01,QUEUE,ACTIVE,WebSphere MQ Channel,WebSphere MQ Client for Java
  A.QMGR1.MYCHANNEL,,10.217.278.15,,,,,GETDETAILSGET_01,QUEUE,NONE,WebSphere MQ Channel,WebSphere MQ Client for Java
  </code></pre>
  
  <p>This is Config in qm.ini. </p>
  
  <pre><code>Channels:
  MaxChannels=2000
  MaxActiveChannels=2000
  </code></pre>
  
  <p>Output of the command provided in the comments:</p>
  
  <pre><code>   "841DD95801B5DC20","A.QMGR1.MYCHANNEL","10.217.278.15","GETDETAILSGET_01","QUEUE","ACTIVE","WebSphere MQ Channel","WebSphere MQ Client for Java","MQOO_INPUT_SHARED,MQOO_BROWSE,MQOO_INQUIRE,MQOO_SAVE_ALL_CONTEXT,MQOO_FAIL_IF_QUIESCING"
     "841DD958AB2CF820","A.QMGR1.MYCHANNEL","10.217.278.15","GETDETAILSGET_01","QUEUE","NONE","WebSphere MQ Channel","WebSphere MQ Client for Java","MQOO_INPUT_SHARED,MQOO_INQUIRE,MQOO_SAVE_ALL_CONTEXT,MQOO_FAIL_IF_QUIESCING,MQOO_NO_READ_AHEAD"
  </code></pre>