【求助】不开启mysql，就一直提示错误，我想能正常显示页面，先缓缓加载mysql [ 新手入门 ]

1.不开启mysql服务，一直提示

CDbConnection failed to open the DB connection: SQLSTATE[HY000] [2003] Can't connect to MySQL server on 'localhost' (10061)

2.把main.php里的应用组件db给删除了，

'db'=>array(
    'connectionString' => 'mysql:host=localhost;dbname=ok',
    'emulatePrepare' => true,
    'username' => 'root',
    'password' => '',
    'charset' => 'utf8',
),

页面提示：CDbConnection.connectionString cannot be empty.

我一定要加载数据库吗？我想在我打开主页的时候，有个判断，如果没开启数据库，给个提示啥的，会不会友好一点？困惑老久，真心求助~