schema_table_lock_waits
This page is part of MariaDB's Documentation.
The parent of this page is: Sys Database Tables for MariaDB Enterprise Server
Topics on this page:
Overview
DETAILS
SCHEMA
VIEW `schema_table_lock_waits` AS SELECT
`g`.`OBJECT_SCHEMA` AS `object_schema`,
`g`.`OBJECT_NAME` AS `object_name`,
`pt`.`THREAD_ID` AS `waiting_thread_id`,
`pt`.`PROCESSLIST_ID` AS `waiting_pid`,
`sys`.`ps_thread_account`(`p`.`OWNER_THREAD_ID`) AS `waiting_account`,
`p`.`LOCK_TYPE` AS `waiting_lock_type`,
`p`.`LOCK_DURATION` AS `waiting_lock_duration`,
`sys`.`format_statement`(`pt`.`PROCESSLIST_INFO`) AS `waiting_query`,
`pt`.`PROCESSLIST_TIME` AS `waiting_query_secs`,
`ps`.`ROWS_AFFECTED` AS `waiting_query_rows_affected`,
`ps`.`ROWS_EXAMINED` AS `waiting_query_rows_examined`,
`gt`.`THREAD_ID` AS `blocking_thread_id`,
`gt`.`PROCESSLIST_ID` AS `blocking_pid`,
`sys`.`ps_thread_account`(`g`.`OWNER_THREAD_ID`) AS `blocking_account`,
`g`.`LOCK_TYPE` AS `blocking_lock_type`,
`g`.`LOCK_DURATION` AS `blocking_lock_duration`,
concat('KILL QUERY ',`gt`.`PROCESSLIST_ID`) AS `sql_kill_blocking_query`,
concat('KILL ',`gt`.`PROCESSLIST_ID`) AS `sql_kill_blocking_connection`
FROM (((((`performance_schema`.`metadata_locks` `g` join `performance_schema`.`metadata_locks` `p` on(`g`.`OBJECT_TYPE` = `p`.`OBJECT_TYPE` and `g`.`OBJECT_SCHEMA` = `p`.`OBJECT_SCHEMA` and `g`.`OBJECT_NAME` = `p`.`OBJECT_NAME` and `g`.`LOCK_STATUS` = 'GRANTED' and `p`.`LOCK_STATUS` = 'PENDING')) join `performance_schema`.`threads` `gt` on(`g`.`OWNER_THREAD_ID` = `gt`.`THREAD_ID`)) join `performance_schema`.`threads` `pt` on(`p`.`OWNER_THREAD_ID` = `pt`.`THREAD_ID`)) left join `performance_schema`.`events_statements_current` `gs` on(`g`.`OWNER_THREAD_ID` = `gs`.`THREAD_ID`)) left join `performance_schema`.`events_statements_current` `ps` on(`p`.`OWNER_THREAD_ID` = `ps`.`THREAD_ID`)) where `g`.`OBJECT_TYPE` = 'TABLE'