Additional uncaught exception thrown while handling exception.

Original

PDOException: SQLSTATE[HY000] [2003] Can't connect to MySQL server on '192.168.22.30' (113) in drupal_is_denied() (line 1921 of /var/www/drupal7/includes/bootstrap.inc).

Additional

PDOException: SQLSTATE[HY000] [2003] Can't connect to MySQL server on '192.168.22.30' (113) in dblog_watchdog() (line 150 of /var/www/drupal7/modules/dblog/dblog.module).