cabeza - thanks for your feedback on my problem.
In the settings is MySQL - see annex file
Here are the contents of my config.php:
<?php
define('DB_ADAPTER', 'mysql');
define('DB_HOST', 'localhost');
define('DB_USER', 'ххххххххххх');
define('DB_PASS', 'хххххххххххх');
define('DB_NAME', 'ххххххххххх');
define('DB_PERSIST', true);
define('TABLE_PREFIX', '');
define('DB_ENGINE', 'InnoDB');
define('ROOT_URL', 'хххххххххххххххххххххххх');
define('DEFAULT_LOCALIZATION', 'ru_ru');
define('COOKIE_PATH', '/');
define('DEBUG', true);
define('SEED', '4ff0832efc209e92e5d32939edfa778c');
define('DB_CHARSET', 'utf8');
return true;
?>