File largeMessagesFileDir = new File(getLargeMessagesDir());
File oldFile = new File(largeMessagesFileDir, oldID + ".msg");
File currentFile = new File(largeMessagesFileDir, messageID + ".msg");
currentFile.renameTo(oldFile);
server.start();
sf = locator.createSessionFactory();
session = sf.createSession(true, true, 0);
session.start();