config/autoload/db.local.php

'doctrine' => array(
                'connection' => array(
                        'orm_default' => array(
                                'driverClass' =>'Doctrine\DBAL\Driver\PDOMySql\Driver',
                                'params' => array(
                                        'host'     => 'localhost',
                                        'port'     => '3306',
                                        'user'     => 'root',
                                        'password' => 'A',
                                        'dbname'   => 'test_bogdan',
                                )
                        ),

                        'orm_alternative'=> array(
                                'driverClass' => 'Doctrine\DBAL\Driver\PDOMySql\Driver',
                                'params' => array(
                                        'host'     => 'localhost',
                                        'port'     => '3306',
                                        'user'     => 'root',
                                        'password' => 'A',
                                        'dbname'   => 'test_bogdan2',
                                )
                        ),
                )
        ),
        'entitymanager' => array(
                'orm_default' => array(
                        'connection'    => 'orm_default',
                        'configuration' => 'orm_default'
                ),
                //This is the alternative config
                'orm_alternative' => array(
                        'connection'    => 'orm_alternative',
                        'configuration' => 'orm_alternative'
                )
        ),