1 “Too many connections”错误

1.1 错误提示

[Mon Mar 11 15:17:14.533289 2019] [php7:error] [pid 20199:tid 140561442842368] [client 10.168.0.119:50581] PHP Fatal error:  Uncaught Doctrine\\DBAL\\DBALException: Failed to connect to the database: An exception occured in driver: SQLSTATE[HY000] [1040] Too many connections in /var/www/owncloud/lib/private/DB/Connection.php:62\nStack trace:\n#0

1.2 解决方法

vim /etc/php.ini

修改如下参数，

pcre.jit=0

1.3 参阅连接

https://github.com/doctrine/dbal/issues/2819
http://php.net/manual/en/pcre.configuration.php