ERROR: No se conecto a la base de datos..!

PDOException: SQLSTATE[HY000] [1040] Too many connections in /var/www/html/commons/config.php:396 Stack trace: #0 /var/www/html/commons/config.php(396): PDO->__construct('mysql:host=wpbu...', 'bdeboleto', 'bde2017*') #1 /var/www/html/commons/404.php(5): ClaseDatos->valores() #2 {main}