code: protected void notifyListenersDatabaseOpen(Collection<DatabaseListener> listeners, DatabaseServer databaseServer)
              throws DatabaseException {
          for (DatabaseListener databaseListener : listeners) {
              try {
                  databaseListener.databaseOpen(databaseServer);
              } catch (DatabaseUnsupportedException e) {
                  logger.error(e.getMessage(), e);
              }
          }
      }
docs: Notifies the given listeners that the given database server was opened.
  
  @param listeners the listeners that will be notified
  @param databaseServer the database server that was opened
  @throws DatabaseException if an error occurred while notifying the database listeners.