Importing tables from external database in Symfony2 with doctrine
doctrine:
    dbal:
        default_connection: default
        connections:
            default:
                driver:   pdo_mysql
                host:     localhost
                dbname:   database1
                user:     root
                password:
            buv:
                driver:   pdo_mysql
                host:     localhost
                dbname:   database2
                user:     root
                password:

php app/console doctrine:mapping:convert xml ./src/App/MyBundle/Resources/config/doctrine/metadata/orm --from-database --force

php app/console doctrine:mapping:import AppMyBundle annotation --filter="users_table"