public function init()
    {
        parent::init();
        if (strncmp($this->db->driverName, 'oci', 3) !== 0 && strncmp($this->db->driverName, 'odbc', 4) !== 0) {
            throw new InvalidConfigException('In order to use OracleMutex connection must be configured to use Oracle database.');
        }
    }