When do I close a XAConnection

Question

          Hi:
          I am using XADataSource and XAConnection to manage a single
          transaction across multiple session beans. So my code looks sth
          like:
          UserTransaction u = (UserTransaction) ctx.lookup(...);
          try {
          u.begin();
          beanA.method();
          beanB.method();
          u.commit();
          catch () {
          u.rollback();
          Inside the SessionBeanA and SessionBeanB, database connection
          is opened separately via sth like this:
          XAConnection connection = some_XADataSource.getXAConnection();
          Everything works great here and the commit/rollback is taken
          care of by the UserTransaction so I need not worry about that
          inside each "connection". In fact, Weblogic document specifically
          says user MUST NOT call those two methods or else exception is
          thrown.
          the question is: when and how to I close the connection. Do I
          1:) treat it just like commit/rollback so that Transaction
          manager will automatially close it once all connections
          participating a transaction complete.
          or
          2:) Close it explicitly. But how do I know when to close it.
          I can't close the connection before the transaction manager
          commit/rollback my changes. On the other hand, I dont know
          when that is going to happen.
          Thanks.
          Lee
          

Answer 1

Most apps don't remain active when you go back to the home screen, but you can close apps completely (including the 'recently used' ones) by : from the home screen (i.e. not with an app that you want to close being 'open' on-screen) double-click the home button to bring up the taskbar, then press and hold any of the apps on the taskbar for a couple of seconds or so until they start shaking, then press the '-' in the top left of each app to close them, and touch any part of the screen above the taskbar so as to stop the shaking and close the taskbar.