Additional uncaught exception thrown while handling exception.

Original

PDOException: SQLSTATE[HY000] [1040] Too many connections in _drupal_session_read() (line 92 of /var/www/v2test/opple.com/includes/session.inc).

Additional

PDOException: SQLSTATE[HY000] [1040] Too many connections in _registry_check_code() (line 3499 of /var/www/v2test/opple.com/includes/bootstrap.inc).

Uncaught exception thrown in session handler.

PDOException: SQLSTATE[HY000] [1040] Too many connections in _registry_check_code() (line 3499 of /var/www/v2test/opple.com/includes/bootstrap.inc).