Symfony2中的多个数据库

I have an application with two database connections. First database is application's own database and second database is from another application (same server, different subdomain).

For SQL queries on the second database I use services.

services.yml

login.company:
    class: JP\CoreBundle\Service\Login\CompanyService
    arguments:
        em: "@doctrine.orm.login_entity_manager"

CompanyService.php

class CompanyService {    
    private $_em;

    public function __construct(EntityManager $em){
        $this->_em = $em;
    }

    public function getSomethingBySomething($something){ // Intentionally obscured method and parameter name
        $conn = $this->_em->getConnection();

        $sql = ''; // Intentionally removed SQL query

        $stmt = $conn->prepare($sql);
        $stmt->bindParam('something', $something); // Intentionally obscured real name to something
        $stmt->execute();

        return ($stmt->rowCount() == 1) ? $stmt->fetch(Query::HYDRATE_ARRAY) : false;
    }
}

config.yml

doctrine:
    dbal:
        default_connection: analysis
        connections:
            analysis:
                driver:   "%database_driver1%"
                host:     "%database_host1%"
                port:     "%database_port1%"
                dbname:   "%database_name1%"
                user:     "%database_user1%"
                password: "%database_password1%"
                charset:  UTF8
            login:
                driver:   "%database_driver2%"
                host:     "%database_host2%"
                port:     "%database_port2%"
                dbname:   "%database_name2%"
                user:     "%database_user2%"
                password: "%database_password2%"
                charset:  UTF8
    orm:
        default_entity_manager: analysis
        entity_managers:
            analysis:
                connection: analysis
                mappings:
                    JPCoreBundle: ~
            login:
                connection: login
        auto_generate_proxy_classes: "%kernel.debug%"

Question: Is this correct use of multiple databases in Symfony2 environment? Could it be improved somehow?