QUEUE_DRIVER=database

'database' => [
        'driver' => 'database',
        'table' => 'jobs',
        'queue' => 'default',
        'expire' => 60,
    ],

class Jobs extends Eloquent {
    protected $connection = "database2"
}

'default' => env('QUEUE_DRIVER', 'database'),

bootstrapcacheconfig.php

'queue' =>
array (
'default' => 'sync',

'queue' =>
array (
'default' => 'database',

php artisan config:cache