Error message

PDOException: SQLSTATE[HY000] [1040] Too many connections in db_select() (line 2640 of /data/www/drupal/includes/database/database.inc).

Error

The website encountered an unexpected error. Please try again later.

Uncaught exception thrown in shutdown function.

PDOException: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'dabar.semaphore' doesn't exist: DELETE FROM {semaphore} WHERE (value = :db_condition_placeholder_0) ; Array ( [:db_condition_placeholder_0] => 137468241366057ebb4323c8.40354914 ) in lock_release_all() (line 269 of /data/www/drupal/includes/lock.inc).