SQL/DB Error -- [

Error establishing a database connection!
1. Are you sure you have the correct user/password?
2. Are you sure that you have typed the correct hostname?
3. Are you sure that the database server is running?

]

Array
(
    [0] => Array
        (
            [file] => /home/archcra/public_html/wp/wp-includes/wp-db.php
            [line] => 57
            [function] => print_error
            [class] => wpdb
            [object] => wpdb Object
                (
                    [debug_called] => 
                    [vardump_called] => 
                    [show_errors] => 1
                    [num_queries] => 0
                    [debug_all] => 
                    [last_query] => 
                    [col_info] => 
                    [dbh] => 
                )

            [type] => ->
            [args] => Array
                (
                    [0] => 
Error establishing a database connection!
Are you sure you have the correct user/password?
Are you sure that you have typed the correct hostname?
Are you sure that the database server is running?

                )

        )

    [1] => Array
        (
            [file] => /home/archcra/public_html/wp/wp-includes/wp-db.php
            [line] => 573
            [function] => wpdb
            [class] => wpdb
            [object] => wpdb Object
                (
                    [debug_called] => 
                    [vardump_called] => 
                    [show_errors] => 1
                    [num_queries] => 0
                    [debug_all] => 
                    [last_query] => 
                    [col_info] => 
                    [dbh] => 
                )

            [type] => ->
            [args] => Array
                (
                    [0] => wpuser
                    [1] => wpus3r
                    [2] => wp
                    [3] => database
                    [4] => 5432
                )

        )

    [2] => Array
        (
            [file] => /home/archcra/public_html/wp/wp-settings.php
            [line] => 30
            [args] => Array
                (
                    [0] => /home/archcra/public_html/wp/wp-includes/wp-db.php
                )

            [function] => require_once
        )

    [3] => Array
        (
            [file] => /home/archcra/public_html/wp/wp-config.php
            [line] => 33
            [args] => Array
                (
                    [0] => /home/archcra/public_html/wp/wp-settings.php
                )

            [function] => require_once
        )

    [4] => Array
        (
            [file] => /home/archcra/public_html/wp/wp-blog-header.php
            [line] => 6
            [args] => Array
                (
                    [0] => /home/archcra/public_html/wp/wp-config.php
                )

            [function] => require_once
        )

    [5] => Array
        (
            [file] => /home/archcra/public_html/wp/index.php
            [line] => 3
            [args] => Array
                (
                    [0] => /home/archcra/public_html/wp/wp-blog-header.php
                )

            [function] => require
        )

)