修改my.ini
# The maximum amount of concurrent sessions the MySQL server will 
# allow. One of these connections will be reserved for a user with 
# SUPER privileges to allow the administrator to login even if the 
# connection limit has been reached. 

max_connections=100 


将它改成更大的数值，如500 

转自江苏三艾网络

如何增加mysql的最大连接数