The table locks and blocking transaction are a very common thing in any database system.
To find all locked and blocked transactions of MySQL Server:
SELECT
pl.id
,pl.user
,pl.state
,it.trx_id
,it.trx_mysql_thread_id
,it.trx_query AS query
,it.trx_id AS blocking_trx_id
,it.trx_mysql_thread_id AS blocking_thread
,it.trx_query AS blocking_query
FROM information_schema.processlist AS pl
INNER JOIN information_schema.innodb_trx AS it
ON pl.id = it.trx_mysql_thread_id
INNER JOIN information_schema.innodb_lock_waits AS ilw
ON it.trx_id = ilw.requesting_trx_id
AND it.trx_id = ilw.blocking_trx_id;
For more information on latest deadlocks and transaction locks, please refer:
mysql> show engine innodb status\G
References:
http://www.dbrnd.com/2016/02/mysql-script-to-identify-the-locks-and-blocking-transactions/
To find all locked and blocked transactions of MySQL Server:
SELECT
pl.id
,pl.user
,pl.state
,it.trx_id
,it.trx_mysql_thread_id
,it.trx_query AS query
,it.trx_id AS blocking_trx_id
,it.trx_mysql_thread_id AS blocking_thread
,it.trx_query AS blocking_query
FROM information_schema.processlist AS pl
INNER JOIN information_schema.innodb_trx AS it
ON pl.id = it.trx_mysql_thread_id
INNER JOIN information_schema.innodb_lock_waits AS ilw
ON it.trx_id = ilw.requesting_trx_id
AND it.trx_id = ilw.blocking_trx_id;
For more information on latest deadlocks and transaction locks, please refer:
mysql> show engine innodb status\G
References:
http://www.dbrnd.com/2016/02/mysql-script-to-identify-the-locks-and-blocking-transactions/
No comments:
Post a Comment