................................................................................. 14 4.1.5 Server File Permissions ..................................................................................... following notice is applicable: U.S. GOVERNMENT END USERS: Oracle programs (including any operating system, integrated software, any programs embedded, installed, or activated on delivered hardware, and modifications preparation of derivative works, and/or adaptation of i) Oracle programs (including any operating system, integrated software, any programs embedded, installed, or activated on delivered hardware, and modifications

............................................................................. 8 8. tpcc‐mysql System Resource Utilization............................................................................ resulted in buying more HDD capacity than was necessary. Now, storage administrators typically size a system based on the needed capacity, then buy a quantity of SSDs to provide that capacity, and are pleasantly to be considered to maximize performance and system value. In the software domain, MySQL Server is a commonly used Relational Database Management System (RDBMS).This whitepaper clarifies how today's

AB公司开发，目前属于Oracle 旗下产品。MySQL是最流行的关系型数据库管理系统之一，在Web应用方面，MySQL 是最好的RDBMS (Relational Database Management System，关系数据库管理系 统）应用软件之一。 MySQL是一种关系数据库管理系统，关系数据库将数据保存在不同的表中，而不是将 所有数据放在一个大仓库内，这样就增加了速度并提高了灵活性。 MySQL Huawei TM280 25G网卡上为mysql 绑定93个核能获得最佳性能。 numactl -C 0-92 -i 0-3 /usr/local/mysql/bin/mysqld --defaults-file=/etc/my.cnf & MySQL 8.0.17 调优指南（openEuler 20.09） 3 操作系统调优 2020-10-15 9

.com::system', 'target_cluster', 'ROM') mysqlsh> clusterset.setRoutingOption('instance-....com::system', 'target_cluster', 'BRU') mysqlsh> clusterset.setRoutingOption('instance-....com::system', 'target_cluster' mysqlsh> clusterset.setRoutingOption('instance-....com::system', 'target_cluster', 'primary') mysqlsh> clusterset.setRoutingOption('instance-....com::system', 'invalidated_cluster_policy', 'accept_ro') mysqlsh> mysqlsh> clusterset.setRoutingOption('instance-....com::system', 'invalidated_cluster_policy', 'drop_all') mysqlsh> clusterset.setRoutingOption('target_cluster', 'LIS') Copyright @ 2021 Oracle and/or

Position position; position.update(metadata.binlog_position,metadata.binlog_file, metadata.executed_gtid_set); metadata.transaction(position, [&]() Position position; position.update(metadata.binlog_position,metadata.binlog_file, metadata.executed_gtid_set); metadata.transaction(position, [&]() Position position; position.update(metadata.binlog_position,metadata.binlog_file, metadata.executed_gtid_set); metadata.transaction(position, [&]()

slave on *.* to ‘sync’@'%' identified by 'sync'; /*保存权限设定*/ flush privileges; /*查看主数据日志状态，需要记住查询结果 File 和 Position 值，是从数据库复 制的日志起点*/ show master status; 在从数据库中执行 SQL 脚本： /*如果已经开启了同步，停止同步*/ stop slave; master_host='master_db', master_user='sync', master_password='sync', master_port=3306, master_log_file='<主数据库查询得到的 File 值>', master_log_pos=<主数据库查询得到的 Positions 值>; 下面是我的脚本例子： change master to master_host='master_db' master_host='master_db', master_user='sync', master_password='sync', master_port=3306, master_log_file='mariadb-bin.000004', master_log_pos=789; /*开启从数据库复制*/ start slave; 最后可以通过 show slave status; 查看同步情况。 至此我们就建立了一个基于

Distributed How to do it © 2018 Percona. 4 Distributed ? MySQL Deployment on More than one System © 2018 Percona. 5 Modern MySQL Scalability © 2018 Percona. 6 Single MySQL Instance Can Do Stays up when component fails © 2018 Percona. 22 Availability via Redundancy Have more than one system Works well for stateless systems Is not enough for databases © 2018 Percona. 23 Availability

Spatial Support • InnoDB R-tree Spatial Indexes • GeoHash • GeoJSON • Spatial Reference System (SRS) MySQL HeatWave • Fully Managed Database Service • Single Database for OLTP, OLAP

Building Blocks (1) 22 M M M M M Com. API Replication Plugin API MySQL Server Group Comm. System (Corosync) Group Com. Engine 2017/4/16 Percona Live 2016 - Santa Clara, CA, US Replication vs Group

为执行完没执行一条 SQL 马上 commit; 2 代表日志写入日志文件在每次提交 后 , 但是日志文件只有大约每秒才会刷新到磁盘上 . 对速度影响比较大，同时也关系数据完整性 innodb_log_file_size 8M 512M 在日志组中每个日志文件的大小 , 一般是 innodb_buffer_pool_size 的 25% ，官方推荐是 innodb_buffer_pool_size 的