与max_connections有关的特性 MySQL无论如何都会保留一个用于管理员(SUPER)登陆的连接,用于管理员连接数据库进行维护操作,即使当前连接数已经达到了max_connections。因此MySQL的实际最大可连接数为Max_used_connections=max_connections+1; 这个参数实际起作用的最大值(实际最大可连接数)为16384,即该参数最大值不能...
#2 0x00000000016e5b1binTCP_socket::get_listener_socket(this=0x7fffffffdb40)at/root/mysql5.7.14/percona-server-5.7.14-7/sql/conn_handler/socket_connection.cc:522 #3 0x00000000016e41d8inMysqld_socket_listener::setup_listener(this=0x339d550)at/root/mysql5.7.14/percona-server-5.7.14-7/sql/c...
#2 0x00000000016e5b1binTCP_socket::get_listener_socket(this=0x7fffffffdb40)at/root/mysql5.7.14/percona-server-5.7.14-7/sql/conn_handler/socket_connection.cc:522 #3 0x00000000016e41d8inMysqld_socket_listener::setup_listener(this=0x339d550)at/root/mysql5.7.14/percona-server-5.7.14-7/sql/c...
Max used is the largest # of concurent active connections. If you use mysql_connect, the connection is only around for the life of the page processing (should be very quick in most cases - under 2 seconds) >I get 2 or greater
secureCRT在打开一个窗口 mysql -uroot -p 登陆 mysql> showglobalstatus like'max_used_connections';+---+---+ | Variable_name | Value | +---+---+ | Max_used_connections |2| +---+---+1rowinset(0.01sec) MySQL比较理想的最大连接数计算方式为:...
Category:MySQL ServerSeverity:S3 (Non-critical) Version:5.0.19-BK, 5.0.16, 4.1OS:Linux (Linux, FreeBSD) Assigned to:CPU Architecture:Any Tags:bfsm_2007_05_03 [22 Dec 2005 10:22] J Rabbit Description:If you issue a FLUSH STATUS command, max_used_connections is reset to 0. However, ...
博主负责的项目主要采用阿里云数据库MySQL，最近频繁出现慢SQL告警，执行时间最长的竟然高达5分钟。导出日志...
MySQL8.0新特性之解决too many connections 2019-12-03 15:06 − 众所周知,目前数据库在超过设置最大连接数时,会报too many connections,把新的连接拒之门外,而在MariaDB 10.0和Percona5.6版本中,有个参数extra_port可以额外登陆到数据库解决这个连接问题。 MySQL官方终于在8.0.14这个版本也推出了相关参数。主...
mysql: [Warning] Using a password on the command line interface can be insecure. ERROR 1203 (42000): User root already has more than 'max_user_connections' active connections 2、max_connections max_connections:这个参数是MYSQL服务端允许的最大连接会话数量,没什么好说的 ...
evey page it keeps adding "connections" -- Either: * You are not calling disconnect(), or * You have "persistent connections" and the number will count up until it hits the number of "children" the server can handle. In Apache, this is MaxClients. That setting should, for most applica...