获取innodb_lock_wait_timeout参数的数值 如果我们想要获取innodb_lock_wait_timeout参数当前的数值,可以使用如下命令: SHOWVARIABLESLIKE'innodb_lock_wait_timeout'; 1. 执行上述命令后,可以看到innodb_lock_wait_timeout参数的当前数值。 示例 下面我们通过一个实际的示例来演示如何设置和获取innodb_lock_wait_timeo...
-- 设置锁超时时间为10秒SETinnodb_lock_wait_timeout=10;-- 开启事务STARTTRANSACTION;-- 更新操作UPDATEtable_nameSETfield1=new_value1WHEREcondition;-- 提交事务COMMIT; 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 4. 总结 通过加锁顺序、设置事务隔离级别和锁超时时间等方式,我们可以有效地解决"mys...
SHOW [GLOBAL | SESSION] VARIABLES [LIKE 'pattern'] SHOW VARIABLES显示了一些MySQL的系统变量值。这些信息也可以通过运行命令mysqladmin variables来得到。 GLOBAL和SESSION可选项是从MySQL 4.0.3开始可以用的。如果是SESSION,就会得到每次新连接中使用的变量值。如果是 SESSION,则得到当前连接中变量的值。如果你不加...
The prior bug you noted (Bug #36285) they cannot change innodb_lock_wait_timeout per session. Is there any way to change the value globally? I need my application to be able to reset it for all users on all future sessions. That would be the equivalent as setting the global value us...
version_comment wait_timeout Session 系统变量 错误码 性能调优 数据库代理 驱动 平台产品 组件& 工具 常见问题 版本发布记录 OceanBase 术语 下载PDF 反馈 鼠标选中内容,快速反馈问题 选中文档中有疑惑的内容,即可快速反馈问题,我们将会跟进处理。例如: 好的,知道了 联系我们 ...
innodb_stats_persistent interactive_timeout lc_time_names log_row_value_options license lower_case_table_names max_allowed_packet max_connections max_sp_recursion_depth max_user_connections net_buffer_length net_read_timeout net_write_timeout nls_calendar nls_characterset nls_comp nls_currency nls...
MariaDB [(none)]> SHOW VARIABLES LIKE '%timeout'; +---+---+ | Variable_name | Value | +---+---+ | connect_timeout | 10 | | delayed_insert_timeout | 300 | | innodb_lock_wait_timeout | 50 | | innodb_rollback_on_timeout | OFF | | interactive_timeout | 28800 | | loc...
record is set. This use of a shared lock can result in deadlock should there be multiple sessions trying to insert the same row if another session already has an exclusive lock. This can occur if another session deletes the row. Suppose that an InnoDB table t1 has the following structure...
To carry out an emergency failover for the primary InnoDB Cluster, follow this procedure: Using MySQL Shell, connect to any member server that is still active in the InnoDB ClusterSet deployment, using an InnoDB Cluster administrator account (created withcluster.setupAdminAccount()). You may also...
setglobalrpl_semi_sync_master_timeout=10000000000; 在主从 semi-sync 复制正常运行时,kill -9 从库mysqld进程,之后在主库执行的新事务会处于Waiting for semi-sync ACK from slave状态。 一、如果主库执行的是flush xxx等非事务型语句,则不会阻塞set global super_read_only=on的执行: ...