Rechercher dans le manuel MySQL
27.4.3.9 The innodb_lock_waits and x$innodb_lock_waits Views
These views summarize the InnoDB
locks that
transactions are waiting for. By default, rows are sorted by
descending lock age.
The innodb_lock_waits
and
x$innodb_lock_waits
views have
these columns:
wait_started
The time at which the lock wait started.
wait_age
How long the lock has been waited for, as a
TIME
value.wait_age_secs
How long the lock has been waited for, in seconds.
locked_table_schema
The schema that contains the locked table.
locked_table_name
The name of the locked table.
locked_table_partition
The name of the locked partition, if any;
NULL
otherwise.locked_table_subpartition
The name of the locked subpartition, if any;
NULL
otherwise.locked_index
The name of the locked index.
locked_type
The type of the waiting lock.
waiting_trx_id
The ID of the waiting transaction.
waiting_trx_started
The time at which the waiting transaction started.
waiting_trx_age
How long the waiting transaction has been waiting, as a
TIME
value.waiting_trx_rows_locked
The number of rows locked by the waiting transaction.
waiting_trx_rows_modified
The number of rows modified by the waiting transaction.
waiting_pid
The processlist ID of the waiting transaction.
waiting_query
The statement that is waiting for the lock.
waiting_lock_id
The ID of the waiting lock.
waiting_lock_mode
The mode of the waiting lock.
blocking_trx_id
The ID of the transaction that is blocking the waiting lock.
blocking_pid
The processlist ID of the blocking transaction.
blocking_query
The statement the blocking transaction is executing. This field reports NULL if the session that issued the blocking query becomes idle. For more information, see Identifying a Blocking Query After the Issuing Session Becomes Idle.
blocking_lock_id
The ID of the lock that is blocking the waiting lock.
blocking_lock_mode
The mode of the lock that is blocking the waiting lock.
blocking_trx_started
The time at which the blocking transaction started.
blocking_trx_age
How long the blocking transaction has been executing, as a
TIME
value.blocking_trx_rows_locked
The number of rows locked by the blocking transaction.
blocking_trx_rows_modified
The number of rows modified by the blocking transaction.
sql_kill_blocking_query
The
KILL
statement to execute to kill the blocking statement.sql_kill_blocking_connection
The
KILL
statement to execute to kill the session running the blocking statement.
Traduction non disponible
Le manuel MySQL n'est pas encore traduit en français sur l'infobrol. Seule la version anglaise est disponible pour l'instant.
Document créé le 26/06/2006, dernière modification le 26/10/2018
Source du document imprimé : https://www.gaudry.be/mysql-rf-sys-innodb-lock-waits.html
L'infobrol est un site personnel dont le contenu n'engage que moi. Le texte est mis à disposition sous licence CreativeCommons(BY-NC-SA). Plus d'info sur les conditions d'utilisation et sur l'auteur.
Références
Ces références et liens indiquent des documents consultés lors de la rédaction de cette page, ou qui peuvent apporter un complément d'information, mais les auteurs de ces sources ne peuvent être tenus responsables du contenu de cette page.
L'auteur de ce site est seul responsable de la manière dont sont présentés ici les différents concepts, et des libertés qui sont prises avec les ouvrages de référence. N'oubliez pas que vous devez croiser les informations de sources multiples afin de diminuer les risques d'erreurs.