mysql server-side command

1 to see which threads are running
show processlist; // list the top 100
show full processlist; // List All

2 to see if the lock table
Show Open the Tables;

IN_USE indicates how many threads are using
Name_locked indicates whether the table is locked

3, the transaction is a lock to view
the SELECT * from information_schema.innodb_locks;

4, waiting for the lock to view the affairs of
the SELECT * from information_schema.innodb_lock_waits;

5, view server status
; show status like '% lock% '

6, see how it works innodb engine information
Show Status Engine InnoDB;

. 7, view server configuration parameters
Show Variables;
Show Variables like '%% timeout'; // timeout parameter