MYSQL已经生效的设置和状态查询命令

以下命令可以在任何已经连接上MYSQL服务器的客户端上执行。
show full processlist ;
kill 57725;#杀掉上面查到的某个导致阻塞的连接
SELECT @@profiling;
SET profiling = 1;
SHOW PROFILES;
SHOW PROFILE for QUERY 1;
#系统设置
show variables like '%key%';
show variables like '%key%';
show variables like '%max%';
show variables like '%char%';
show variables like '%coll%';
show variables like '%buffer%';
#运行状态
show status like '%thread%';
show status like 'Qcache%';
show status like 'Open%tables';
show status like '%lock%';
show status like '%key%';
show status like '%buffer%';
show global status ;
show master status;
show slave status;
show slave hosts;
show binlog events;