From Zend Application Available Resources Db Documentation:

{quote} Below is an example INI configuration that can be used to initialize the DB resource.

[production]
resources.db.adapter = "pdo_mysql"
resources.db.params.host = "localhost"
resources.db.params.username = "webuser"
resources.db.params.password = "XXXXXXX"
resources.db.params.dbname = "test"
resources.db.isDefaultTableAdapter = true

Note: Retrieving the Adapter instance If you choose not to make the adapter instantiated with this resource the default table adapter, how do you retrieve the adapter instance? As with any resource plugin, you can fetch the DB resource plugin from your bootstrap:

$resource = $bootstrap->getPluginResource('db');

Once you have the resource object, you can fetch the DB adapter using the getDbAdapter() method:

$db = $resource->getDbAdapter();

{quote}

So i expect when i override the Application Bootstrap _initDb() function with those:

function _initDb() {
    if ($this->hasPluginResource('db')) {
        $resource = $this->getPluginResource('db');
        $db = $resource->getDbAdapter();
        return $db;
    }
}

that everything works fine. But it doesn't because getDbAdapter() does not set the default table adapter; it is acctually setted on init(). Imho, this is the wrong place.

The attached patch should fix this problem.

Here a workaround:

function _initDb() {
    if ($this->hasPluginResource('db')) {
        $resource = $this->getPluginResource('db');
        $db = $resource->init();
        return $db;
    }
}