1.mysql锁状态查询
show status like '%innodb_row_lock%';
// 查看进程 SHOW FULL 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;