protected function _configdb($check = false) {
		$this->out(__d('cake_installer', 'Configure database connections'));
		$this->hr();
		if ($check && ($this->InstallerCheck->checkConnectDb($this->path, true) === true)) {
			$this->out('<success>' . __d('cake_installer', 'This action has already been successfully completed. Skipped.') . '</success>');

			return true;
		}

		$result = $this->DbConfigExtend->execute();
		if ($check && $result) {
			$result = null;
		}

		return $result;
	}