http://blog.sina.com.cn/s/blog_66519bd80102v3ct.html
http://blog.chinaunix.net/uid-10661836-id-4090576.html
http://blog.csdn.net/dc_726/article/details/8576151/
SELECT * FROM INFORMATION_SCHEMA.INNODB_LOCKS;
SELECT * FROM INFORMATION_SCHEMA.INNODB_LOCK_WAITS;