但即使你打开了 polar_support_mdl_sync_preemption = ON; 也无济于事,还会在添加索引的时候报这个错误,同时也不是每次都会报错,而是在有大事务情况下,在读节点上很长时间无法运行完毕的情况下,会出现这个报错,而且只要出现这个报错,就会导致后续在添加索引的失败。解决方案为重启从节点。 这里提示:解决问题的关键...
CREATE USER 'appuser'@'%' IDENTIFIED BY 'StrongPassword123!'; GRANT SELECT,INSERT,UPDATE,DELETE ON appdb.* TO 'appuser'@'%'; FLUSH PRIVILEGES; 5. 性能调优 5.1 监控工具配置 安装mysqltuner: wget https://raw.githubusercontent.com/major/MySQLTuner-perl/master/mysqltuner.pl chmod +x mysqltuner...
How to sync two MySQL databases Each IT project has at least two development environments: staging and production. The same thing is true for databases. If your product deals with a MySQL database, then you should have such a database on staging. ...
Database schema compare tool enables you to identify differences in the object structure within relational databases, and synchronize your specific objects across multiple databases. It is usually used in the following scenarios: Merge database changes from your private branch to your team's main bran...
There are different approaches to convert MySQL to MSSQL databases, including manual scripting or using automated migration software. The two methods you can use to migrate data from MySQL to SQL Server.Want to sync MySQL data to SQL Server? Method 1: Using Hevo Data to Connect MySQL to ...
Different deployment scenarios require specific network configurations. For details, see Network Readiness Overview. For source databases hosted on self-built IDC environments or other cloud providers, the access types include Public Network / Direct Connect / VPN Access / CCN. Public Network: The ...
BenchANTdoes a great job of showing how different servers can impact a database’s performance. Along with that, the hardware configuration also makes a significant impact on your database performance. For example, if you use aVPS with NVMe storage, the underlying storage is much faster than ...
CreateDBInstance 新增入参:AutoSyncFlag CreateDBInstanceHour 新增入参:AutoSyncFlag DescribeDBSecurityGroups 新增入参:ForReadonlyInstance DisassociateSecurityGroups 新增入参:ForReadonlyInstance ModifyDBInstanceSecurityGroups 新增入参:ForReadonlyInstance 修改数据结构: Inbound 新增成员:Desc Outbound 新增...
CREATE USER 'syncuser'@'%' IDENTIFIED BY 'userpassword'; GRANT REPLICATION SLAVE, REPLICATION CLIENT on *.* to 'syncuser'@'%'; SHOW GRANTS FOR syncuser@'%'; 存储过程执行所有数据传入复制函数。 有关所有过程的信息,请参阅数据传入复制存储过程。 可以在 MySQL shell 或 MySQL Workbench 中...
Create the from_name and to_name databases manually on the source and the replica with different names. If you use statement-based or mixed binary logging format, do not use cross-database queries, and do not specify database names in queries. For both DDL and DML statements, rely on ...