mysql 查看锁表信息

// 查看进程
SHOW PROCESSLIST;
// 查看是否锁表
SHOW OPEN TABLES WHERE In_use > 0;
// 查看正在锁的事务
SELECT * FROM INFORMATION_SCHEMA.INNODB_LOCKS; 
// 查看等待锁的事务
SELECT * FROM INFORMATION_SCHEMA.INNODB_LOCK_WAITS;

通过以下的语句查询出锁表的SQL：

select l.session_id sid,

       s.serial#,
       l.locked_mode,
       l.oracle_username,
       s.user#,
       l.os_user_name,
       s.machine,
       s.terminal,
       a.sql_text,
       a.action
  from v$sqlarea a, v$session s, v$locked_object l
where l.session_id = s.sid
   and s.prev_sql_addr = a.address
order by sid, s.serial#;