Java Program Hangs

Question

Hi,
I am running into a strange problem. We have scheduled a Java program to using BQPlus scheduler. The program hangs some time at a particular statement, while most of the time it works. If we run it directly from command line it always works.
The statement where program hangs some time uses the put method of Properties object. I do not see any thing there which should make the program hang (Database connection or file read write).
I am using java version "1.4.2_02" on AIX
Any help on how to further investigate would be great!
Abhinav

Answer 1

Here is the code that hangs. It hangs on the following statement:
props.put(APIConst.TAG_JDBC_URL, ApplicationProperties.JREPORT_TAG_JDBC_URL);
ReportConfig reportConfig= ReportConfigFactory.instance.getReportConfig(repBean.getReportName());
          if(reportConfig==null){
               throw new IllegalStateException ("The report configuration for " +
                         "the name=" + repBean.getReportName() + " " +
                         "could not be found. Please " +
                         "check the reportconfig.xml file");
          Properties props = new Properties();
          String pdfFileName;
          if(logger.isDebugEnabled()){
               logger.debug("Report is going to be generated for config=:\n \t" + 
                         reportConfig.getName());
          logger.info("Before putting properties values");
          props.put(APIConst.TAG_JDBC_DRIVER,ApplicationProperties.JREPORT_TAG_JDBC_DRIVER);
          logger.info("Setting property value for ApplicationProperties.JREPORT_TAG_JDBC_DRIVER "+ApplicationProperties.JREPORT_TAG_JDBC_DRIVER);
          props.put(APIConst.TAG_JDBC_URL, ApplicationProperties.JREPORT_TAG_JDBC_URL);
          logger.info("Setting property value for ApplicationProperties.JREPORT_TAG_JDBC_URL "+ApplicationProperties.JREPORT_TAG_JDBC_URL);
          props.put(APIConst.TAG_DB_USER,ApplicationProperties.JREPORT_TAG_DB_USER);
          logger.info("Setting property value for ApplicationProperties.JREPORT_TAG_DB_USER "+ApplicationProperties.JREPORT_TAG_DB_USER);
          props.put(APIConst.TAG_DB_PSWD,ApplicationProperties.JREPORT_TAG_DB_PSWD);          
          logger.info("Setting property value for ApplicationProperties.JREPORT_TAG_DB_PSWD "+ApplicationProperties.JREPORT_TAG_DB_PSWD);
          props.put(APIConst.TAG_TASK_CLASS, APIConst.TASK_TO_FILE);     
          logger.info("Setting property value for APIConst.TASK_TO_FILE "+APIConst.TASK_TO_FILE);
          props.put(APIConst.TAG_CATALOG, reportConfig.getCatalog());
          logger.info("Setting property value for reportConfig.getCatalog() "+reportConfig.getCatalog());
          props.put(APIConst.TAG_REPORT, reportConfig.getCls());
          logger.info("Setting property value for reportConfig.getCls() "+reportConfig.getCls());
          props.put(APIConst.TAG_TO_DISK, String.valueOf(true));
          logger.info("Setting property value for String.valueOf(true) "+String.valueOf(true));
          props.put(APIConst.TAG_TO_PDF, String.valueOf(true));
          logger.info("Setting property value for String.valueOf(true)"+String.valueOf(true));
          //Set to disk type is "1" which means publish to real disk path, default is "0"
          //which means publish to JReport Server resource path
          logger.info("After setting the db related properties");
          //check for printer setting values