hosting upgraded from shared to VPS, database connection error

hello, i recently requested for an upgrade of my web hosting from shared to VPS, but after it, i accessed my amember links and has database connection error:

Script Error
Error establishing a database connection. Please contact site webmaster if this error does not disappear long time

Could you help me how to correct this?
Appreciate any help.

Thanks!

Could be you need to create user for database on new hosting but it might also help if you posted contents of error log.

Hi I have below in config.php
what shall i do with the credentials?

return array(
'db' => array(
'mysql' => array(
'db' => 'XXX_amember',
'user' => 'YYY_amember',
'pass' => 'SI]+zG&SrHSaa',
'host' => 'localhost',
'prefix' => 'am_',
'port' => '',
),
),
);

and how can i check if the pdo and pdo_mysql are enabled?
I'm not really into technical but i can explore if given steps.

Thanks!

i have seen that pdo is not yet enabled. im asking hosting support to do this..

Now change that database password you posted on a public forum...

Cheers
Rob