//bootstrap.php

    protected function _initDB()
    {
        $dbs = $this->getPluginResource('multidb');
        Zend_Registry::set('db', $dbs->getDb('db1'));
        Zend_Registry::set('db2', $dbs->getDb('db2'));;
    }

//application.ini
;setting up the db - primary databse
resources.multidb.db1.adapter = "pdo_mysql"
resources.multidb.db1.host = "localhost"
resources.multidb.db1.username = "root"
resources.multidb.db1.password = ""
resources.multidb.db1.dbname = "herofull"

;secondary - user GS database
resources.multidb.db2.adapter = "pdo_mysql"
resources.multidb.db2.host = "localhost"
resources.multidb.db2.username = "root"
resources.multidb.db2.password =
resources.multidb.db2.dbname = "heroGS"