示例#1
0
 static void display(ComboPooledDataSource cpds) throws Exception {
   System.err.println("numConnections: " + cpds.getNumConnections());
   System.err.println("numBusyConnections: " + cpds.getNumBusyConnections());
   System.err.println("numIdleConnections: " + cpds.getNumIdleConnections());
   System.err.println(
       "numUnclosedOrphanedConnections: " + cpds.getNumUnclosedOrphanedConnections());
   System.err.println();
 }
示例#2
0
  public static void main(String[] argv) {
    try {
      ComboPooledDataSource cpds = new ComboPooledDataSource();
      cpds.setJdbcUrl(argv[0]);
      cpds.setUser(argv[1]);
      cpds.setPassword(argv[2]);
      cpds.setMinPoolSize(5);
      cpds.setAcquireIncrement(5);
      cpds.setMaxPoolSize(20);

      System.err.println("Initial...");
      display(cpds);
      Thread.sleep(2000);

      HashSet hs = new HashSet();
      for (int i = 0; i < 20; ++i) {
        Connection c = cpds.getConnection();
        hs.add(c);
        System.err.println("Adding (" + (i + 1) + ") " + c);
        display(cpds);
        Thread.sleep(1000);

        // 			if (i == 9)
        // 			    {
        //  				//System.err.println("hardReset()ing");
        //  				//cpds.hardReset();
        // 				System.err.println("softReset()ing");
        // 				cpds.softReset();
        // 			    }
      }

      int count = 0;
      for (Iterator ii = hs.iterator(); ii.hasNext(); ) {
        Connection c = ((Connection) ii.next());
        System.err.println("Removing " + ++count);
        ii.remove();
        try {
          c.getMetaData().getTables(null, null, "PROBABLYNOT", new String[] {"TABLE"});
        } catch (Exception e) {
          System.err.println(e);
          System.err.println();
          continue;
        } finally {
          c.close();
        }
        Thread.sleep(2000);
        display(cpds);
      }

      System.err.println(
          "Closing data source, \"forcing\" garbage collection, and sleeping for 5 seconds...");
      cpds.close();
      System.gc();
      System.err.println("Main Thread: Sleeping for five seconds!");
      Thread.sleep(5000);
      // 		System.gc();
      // 		Thread.sleep(5000);
      System.err.println("Bye!");
    } catch (Exception e) {
      e.printStackTrace();
    }
  }