Increase of the memory...

Question

Hi experts,
i'm developping a java application which open report into a report viewer. My problem is, every loading of report increase the memory usage of the application which are not decrease when that report viewer is disposed. And the consequence is the application memory can reach easily 100 MB to 200 MB depending on the number of reports who has been opened.
any help would be appreciate.
thks
Mart.

Answer 1

hmmm..... i'm not sure if I understand.
I call the close() method of the ReportClientDocument object during the windowClosing() of the form containing the ReportViewerBean() object.
Here my code... it's going to be easier like this.
public class JReportDialog extends IMAFrame
    static final int FORM_WIDTH = 600;
    static final int FORM_HEIGHT = 400;
    private ConnexionInfos m_ConnInfo;
    //Crystal Report thick-client viewer object that will be embedded into the JFrame.
    private ReportViewerBean m_reportViewer;
    //This report will be viewed in the thick-client viewer.
    private ReportClientDocument m_reportClientDoc;
    private String m_viewName;
    public JReportDialog(Window owner, String reportFileName, String viewName, String[] args)
        super(StringTable.get("report","title_report_dialog"));
        m_ConnInfo = ConnexionInfos.getInstance();
        m_viewName = viewName;
        setLayout(new BorderLayout());
        setMinimumSize(new Dimension(FORM_WIDTH, FORM_HEIGHT));
        addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                try {
                    // Fermer le rapport
                    m_reportClientDoc.close();
                    // Supprimer la vue associée au rapport
                    DomainFactory.getDomainReport().dropView(m_viewName);
                    // Fermer la forme
                    //dispose();
                catch (ServiceException ex1){
                    ExceptionManager.getInstance().manageIt(this.getClass(), ex1.toString());
                catch(ReportSDKException ex) {
                    ExceptionManager.getInstance().manageIt(this.getClass(), ex.toString());
        setExtendedState(JFrame.MAXIMIZED_BOTH);
        if(!(new File(reportFileName)).exists()){
            JOptionPane.showMessageDialog(this,
                                          StringTable.get("report","msg_file_missing"),
                                          StringTable.get("report","title_file_missing"),
                                          JOptionPane.ERROR_MESSAGE);
        else{
            //Set the report that the ReportViewerBean will display.
            try{
                m_reportClientDoc = new ReportClientDocument();
                m_reportClientDoc.open(reportFileName, 0);
                // Setting des paramètres de connection
                setTablesProperties(m_reportClientDoc.getDatabaseController());
                // Setting des paramètres du rapport
                setParam(m_reportClientDoc.getDataDefController(),args);
                m_reportViewer = new ReportViewerBean();
                m_reportViewer.setReportSource(m_reportClientDoc.getReportSource());
                m_reportViewer.setHasRefreshButton(false);
                m_reportViewer.setHasBusyIndicator(true);
                m_reportViewer.setShowLogo(false);
                m_reportViewer.setFont(new Font("Tahoma",Font.PLAIN,12));
                m_reportViewer.init();
                m_reportViewer.start();
            catch (ReportSDKException ex){
                ExceptionManager.getInstance().manageIt(this.getClass(), ex.toString());
            getContentPane().add(m_reportViewer);
    private void setParam(DataDefController databaseDefController,String[] args){
        ParameterFieldController paramFieldController = databaseDefController.getParameterFieldController();
        try{
            paramFieldController.setCurrentValue("", "DateFrom",new SimpleDateFormat("yyyy-MM-dd").parse(args[0]));
            paramFieldController.setCurrentValue("", "DateTo", new SimpleDateFormat("yyyy-MM-dd").parse(args[1]));
            if(args[2].length() > 0)
                 paramFieldController.setCurrentValue("", "Staff", args[2]);
             catch (ParseException ex1) {
                 ExceptionManager.getInstance().manageIt(this.getClass(), ex1.toString());
             catch (ReportSDKException ex){
                 ExceptionManager.getInstance().manageIt(this.getClass(), ex.toString());
    private void setTablesProperties(DatabaseController databaseController) throws ReportSDKException {
        final String TABLE_NAME_QUALIFIER = "CENTER.";
        final String DBUSERNAME = m_ConnInfo.getUser();
        final String DBPASSWORD = m_ConnInfo.getPass();
        final String SERVER = m_ConnInfo.getHost();
        final String DATABASE_NAME = m_ConnInfo.getSID();
        final String CONNECTION_URL = "jdbc:oracle:thin:@" + SERVER + ":1521:" + DATABASE_NAME;
        final String DATABASE_CLASSNAME = "oracle.jdbc.driver.OracleDriver";
        final String DATABASE_DLL = "crdb_jdbc.dll";
        final String JDBC_CONNECTION_STRING = "!" + CONNECTION_URL + "!" + "jdbc:oracle:thin:{userid}/{password}@" + SERVER + ":1521:" + DATABASE_NAME;
        Tables tables = databaseController.getDatabase().getTables();
        ITable oldTable = tables.getTable(0);
        System.out.println(tables.size());
        ITable newTable = new Table();
        newTable.setName(m_viewName);
        newTable.setAlias(m_viewName);
        //Change properties that are different from the original datasource.
        newTable.setQualifiedName(TABLE_NAME_QUALIFIER + newTable.getName());
        //Change connection information properties.
        IConnectionInfo connectionInfo = newTable.getConnectionInfo();
        //Modifier les nouvelles props de la nouvelle connection
        PropertyBag propertyBag = new PropertyBag();
        propertyBag.put("Use JDBC", "true");
        propertyBag.put("Connection URL", CONNECTION_URL);
        propertyBag.put("Database Class Name", DATABASE_CLASSNAME);
        propertyBag.put("Database DLL", DATABASE_DLL);
        propertyBag.put("Server", SERVER);
        propertyBag.put("Trusted_Connection", "false");
        propertyBag.put("JDBC Connection String", JDBC_CONNECTION_STRING);
        connectionInfo.setAttributes(propertyBag);
        // Informations de sécurité
        connectionInfo.setUserName(DBUSERNAME);
        connectionInfo.setPassword(DBPASSWORD);
        connectionInfo.setKind(ConnectionInfoKind.SQL);
        newTable.setConnectionInfo(connectionInfo);
        //Update la table
        databaseController.setTableLocation(oldTable,newTable);