@文心快码BaiduComatemysql database is locked 文心快码BaiduComate 当MySQL数据库被锁定时,你可以按照以下步骤进行解锁和优化操作: 1. 确认MySQL数据库锁定状态 首先,你需要确认数据库是否真的被锁定。可以使用以下命令来查看当前正在运行的进程和锁定状态: sql SHOW PROCESSLIST; 这个命令会显示所有当前MySQL服务器上...
Enter password: debug会将状态信息生成到mysql的错误文件,一般锁的信息都会保存在最后几行,这里我们在操作系统层error log最后几行: [root@phpmysql02 data]# tail -10 phpmysql02.err Thread database.table_name Locked/Waiting Lock_type 2 hdpic.t_wiki_zutu Waiting - write Highest priority write lock ...
1234567 mysql show open tables where in_use 0 ;+---+---+---+---+| Database | Table | In_use | Name_locked |+---+---+---+---+| test | t | 1 | 0 |+---+---+---+---+1 row in set (0.00 sec) 2.第2步 查看数据库当前的进程,看一下有无正在执行的慢SQL记录线程。
通过日志我们发现事务1顺利执行,事务2抛出异常 Exception in thread "Thread-5" org.springframework.dao.DeadlockLoserDataAccessException: ### Error updating database. Cause: com.mysql.cj.jdbc.exceptions.MySQLTransactionRollbackException: Deadlock found when trying to get lock; try restarting transaction\...
Name_locked: 是否被上了表级锁,如果为1则表示该表被锁定。+---+---+---+---+|Database|Table|In_use|Name_locked|+---+---+---+---+|performance_schema|events_waits_summary_by_user_by_event
If you use third-party software to perform a full backup, the MySQL database is locked. As a result, the backup job is blocked and delayed. A delay occurs when you perform a full backup in the Cloud Backup console. The MySQL backup feature does not support backing up multiple MySQL ...
| Database | Table | In_use | Name_locked | +---+---+---+---+ | test | user | 1 | 0 | +---+---+---+---+ 1 row in set (0.00 sec) 元数据锁 在Session A中,执行如下SQL给表中某些行加上行级X锁: mysql> begin; ...
3 mysql锁 相对其他数据库而言,MySQL的锁机制比较简单,其最显著的特点是不同的存储引擎支持不同的锁机制。...4 MyISAM 表锁 MyISAM 存储引擎只支持表锁,这也是MySQL开始几个版本中唯一支持的锁类型。...tables; 读锁案例准备环境 -- 创建数据库 create database demo03 default charset=utf8; use demo03;...
Markus Larsson June 04, 2007 07:10AM Re: Database gets locked without information in the ldb-file 2717 Doug Lourey June 04, 2007 01:25PM Sorry, you can't reply to this topic. It has been closed.Content reproduced on this site is the property of the respective copyright holders....
Database changed mysql> begin; Query OK, 0 rows affected (0.01 sec) mysql> update students set name=UUID() where id = 1; Query OK, 1 row affected (0.02 sec) Rows matched: 1 Changed: 1 Warnings: 0 mysql> update students set name=UUID() where id = 2; ...