29+ Waiting For Table Metadata Lock

How can we disable truncate action on. Web Waiting in the queue.

Waiting For Table Metadata Lock Delft Stack

Web 8114 Metadata Locking.

. Web A metadata lock on a table prevents changes to the tables structure. Web mysql5710 出现waiting for table metadata lock. This locking approach has the implication that a table that is being used by a transaction.

Web Waiting for table metadata lock occurs in database whenever there is truncate cache_entity_node call execute. When a connection tries to use a. 发现多个该表的查询进程的状态为waiting for table metadata lock巧的发现表被锁的同时正在对表进行DDL操.

But all select queries are getting locked and we are observing Waiting for table metadata lock. Web 出现Waiting for table metadata lock这种情况多半是和事务有关要么是一个长事务在运行要么是事务没有提交造成的. If such a lock waiting queue appears in the core table of the production environment it will cause catastrophic consequences.

Web We are using only select queries. We have enabled slow query. MySQL uses metadata locking to manage concurrent access to database objects and to ensure data consistency.

Web Non-transactional tables are also locked as well as views and objects which are related to locked tablesviews stored functions triggers etc.

Generation And Handling Of Metadata Locks On Rds For Mysql Tables Alibaba Cloud Community