Connection Pooling in Java application for interacting with Websphere MQ

Sanjeev <>
Tue, 27 May 2008 02:19:20 -0700 (PDT)
I have following infrastruture at my site.

1> Machine #1 has below
   - Websphere MQSeries 6.0 (client setup - Slim Client)
   - OS = Windows 2003
   - i/p address :
   - Tomcat web server 5.5
   - No Websphere Application Server.

2> Machine #2 has below
   - Websphere MQSeries 6.0 (Server setup)
   - OS = Windows 2003
   - i/p address :
   - Queue Manager Name : qMngr
   - Queue Name (client will put the message) : toServerQ
   - Queue Name (client will get the message) : fromServerQ

- I have developed the web application in Tomcat web server 5.5 using
MQ base classes for accessing the Websphere MQ.
- Since it is web application there can be atleast 25 request at
  i.e. when client#1 request data from queue he must get data related
to client#1 only not other than client#1.
- For accessing the websphere MQ, I am using websphere MQ base classes
in Client mode. (Not JMS)

==>>>> Source Code as follows

Class MQInterface (Servlet) is used for getting the web request from
user and reply the response in html format.

public class MQInterface extends HttpServlet {

    protected void doPost(HttpServletRequest request,
HttpServletResponse response)
    throws ServletException, IOException {
        String Output = "";
        System.out.println("!! Entered into Banking Servlet !!");
        String requestParam = request.getParameter("OPRN_CODE");

        if (requestParam.equalsIgnoreCase("GET_NAME_DETAIL")){

        String id = request.getParameter("id");
        Output = MQDataObject().getNameDetail(id);

            return Output;
    PrintWriter out = response.getWriter();

Class MQDataObject is used for getting and putting data(message) into
Websphere MQ.

public class MQDataObject {
    private String hostname = "";
    private String channel = "Chnl1";
    private String qManager = "qMngr1";
    private MQQueueManager qMgr;
    private ISISSSLAdaptor ssl;
    private ISISConfigHelper ConfigHelper;
    private String Output;

    public MQDataObject(){
        MQEnvironment.hostname = hostname; = channel;,MQC.TRANSPORT_MQSERIES_CLIENT);
        MQEnvironment.sslCipherSuite =

            ssl = new DEMOSSLAdaptor("DEMOSSLAdaptor.config");
            ConfigHelper = new
        }catch(Exception exception){
            System.out.println("Exception Details => " + exception);
    public String getNameDetail(String sendMessage){

    String msgText = "";

  // Create a connection to the Queue Manager.
             qMgr = new MQQueueManager(qManager);

             // Set up the options on the queue we wish to open
             int openOutOptions = MQC.MQOO_OUTPUT;

             // Specify the queue to open and open option
             MQQueue sendingQueue =

             // Define the MQ message and write some text in UTF
             MQMessage sendingMessage = new MQMessage();

             // Specify the message options..
             MQPutMessageOptions pmo = new MQPutMessageOptions();

             // Put message on the queue

             // Close Sending Queue

         // Receiving the message back

             // Wait for 5 seconds to get reply from receiving queue

             // Set up the options on receiving queue we wish to open
             int openInOptions = MQC.MQOO_INPUT_AS_Q_DEF |
             MQQueue receivingQueue =

             MQMessage receivingMessage = new MQMessage();

             // Set and Get the message options
             MQGetMessageOptions gmo = new MQGetMessageOptions();

             // Receiving the message off the queue.

             // Get the message from the receiving queue.
             msgText =

             // Close Receiving Queue

             // Close a connection to the Queue Manager.

             // Parse the received message using parser.
             String output = new IFXXMLParser().runExample(msgText);

        catch (MQException mqex){
                System.out.println("MQ Error : " + mqex);
        catch (Exception ex){
                System.out.println("General Error : " + ex);
        return Output;

The message for sending the receiving is in XML format.

Could any one help me following in questions.

1> Since there is 30 request at time so for improve the performance
and resources I need to do connection pooling.
   How can I achieve this using base classes.
2> While retrieving (getting) the message for particular request how
can I identify the response message.
   i.e. when client#1 request data from queue he must get data related
to client#1 only not other than client#1.
   because In above scenario there are separate queues for getting the
message and putting the message.

I have read the tutorial on connection pulling but I am little

Thanking in Advance

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