MySQL数据库连接状态查看
MySQL的最大连接数默认是100客户端登录：mysql -uusername -ppassword
设置新的最大连接数为200：mysql> set GLOBAL max_connections=200;
显示当前运行的Query：mysql> show processlist;
显示当前状态：mysql> show status;
退出客户端：mysql> exit;
查看当前最大连接数：mysqladmin -uusername -ppassword variables |find "max_con"
如：
C:\mysql\bin>mysqladmin -uroot -p variables | find "max_con"
Enter password:
| max_connections | 100
| max_connect_errors | 10
show status 也可以，但不方便。
Threads_connected
The number of currently open connections.
Threads_created
The number of threads created to handle connections.
Threads_running
The number of threads that are not sleeping.
Max_used_connections
The maximum number of connections that have been in use simultaneously since the server started.
Connections
The number of connection attempts (successful or not) to the MySQL server.
其中Threads_running 你可以知道当前运行的线程。不过不如show processlist来得方便。并且还可以知道在正执行什么SQL语句。
页:
[1]