You can set variable innodb_lock_wait_timeout=100 for lock time to 100 sec.

mysql> set innodb_lock_wait_timeout=100

Query OK, 0 rows affected (0.02 sec)

mysql> show variables like 'innodb_lock_wait_timeout';
| Variable_name            | Value |
| innodb_lock_wait_timeout | 100   |

The transaction which is timeout, try to lock table which is hold by another process. and your timeout variable set with little number of second. so it shows error. You can see more status by the command.


You can see list of locked tables by-

 show open tables where in_use>0;

Now see the thread which is using this table

  show full processlist;

now you can kill that thread or wait to complete it.

To get a list of the threads you want to kill off.

SELECT CONCAT('KILL ',id,';') AS run_this FROM information_schema.processlist

You now have a list of the threads you want to kill off.