public synchronized void setHostBusy(Session session,int busy){
		
		Connection mConnection=null;
		CallableStatement mStatement=null;
		
		try {   
			try{
				mConnection = DriverManager.getConnection(HUB_DB_URL, HUB_USER_NAME,HUB_USER_PASSWORD);
				mConnection.setAutoCommit(false);
				
				mStatement=mConnection.prepareCall("CALL SET_HOST_BUSY(?,?)");
				mStatement.setInt(1, session.host_id);
				mStatement.setInt(2, busy);
				
				mStatement.executeQuery();
				mConnection.commit();
				
				notifyUsers(session.host_id);
			}
			catch(SQLException e){
				session.disconnect();
				mConnection.rollback();
				logError(e, "setHostBusy");
			}
		}
		catch(Exception e){
			session.disconnect();
			logError(e, "setHostBusy");
		}
		finally{	
			try{
				if(mStatement!=null){mStatement.close();}
				if(mConnection!=null){mConnection.close();}
			}
			catch(SQLException e){
				logError(e, "setHostBusy");
			}
		}
	}

НАЧАЛО_ПРОГРАММЫ() { 
   mConnection = DriverManager.getConnection(HUB_DB_URL, HUB_USER_NAME,HUB_USER_PASSWORD);
}

SYNCHRONIZED_ФУНКЦИЯ() {
   mStatement=...
   mStatement.executeQuery();
   mConnection.commit();
   mStatement.close();
}

КОНЕЦ_ПРОГРАММЫ() { 
   mConnection.close();
}