MYSQL中怎么调整日志组
发布时间:2022-02-11 13:50:46 所属栏目:搜索优化 来源:互联网
导读:本篇文章为大家展示了MYSQL中怎么调整日志组,内容简明扼要并且容易理解,绝对能使你眼前一亮,通过这篇文章的详细介绍希望你能有所收获。 1、查看关闭方式: mysql show variables like %fast%; +----------------------+-------+ | Variable_name | Value
本篇文章为大家展示了MYSQL中怎么调整日志组,内容简明扼要并且容易理解,绝对能使你眼前一亮,通过这篇文章的详细介绍希望你能有所收获。 1、查看关闭方式: mysql> show variables like '%fast%'; +----------------------+-------+ | Variable_name | Value | +----------------------+-------+ | innodb_fast_shutdown | 1 | +----------------------+-------+ 1 row in set (0.00 sec) 该参数解释如下:,默认值为1,设置为0 是干净的关闭 和ORACLE里面shutdown immeidate对应 The InnoDB shutdown mode. If the value is 0, InnoDB does a slow shutdown, a full purge and a change buffer merge before shutting down. If the value is 1 (the default), InnoDB skips these operations at shutdown, a process known as a fast shutdown. If the value is 2, InnoDB flushes its logs and shuts down cold, as if MySQL had crashed; no committed transactions are lost, but the crash recovery operation makes the next startup take longer.。 2、调整参数innodb_fast_shutdown为0 set global innodb_fast_shutdown=0 3、关闭MYSQL mysqladmin -uroot shutdown -S /home/mysql-5.6/mysql-3306/mysql.sock 4、调整REDO大小,日志文件默认命名是ib_logfile开头 1、找到REDO文件所在目录(有几个文件处理几个,移动到其他目录)。 mv ib_logfilexx ../ ib_logfilexx 2、添加参数:日志组个数和日志大小到参数文件 在参数文件[mysqld]下面添加如下参数 innodb_log_file_size = 512M –每个日志组大小512M innodb_log_files_in_group = 3—一共3组日志组 5、 打开mysql ./mysqld_safe --defaults-file=/home/mysql-5.6/mysql-3307/my.cnf & 6、查看修改后的日志组大小和个数 mysql> show variables like '%log_file%'; +---------------------------+------------------------------------------------+ | Variable_name | Value | +---------------------------+------------------------------------------------+ | general_log_file | /home/mysql-5.6/mysql-3306/data/test1.log | | innodb_log_file_size | 536870912 | | innodb_log_files_in_group | 3 | | slow_query_log_file | /home/mysql-5.6/mysql-3306/data/test1-slow.log | +---------------------------+------------------------------------------------+ 4 rows in set (0.00 sec) 上述内容就是MYSQL中怎么调整日志组,你们学到知识或技能了吗? (编辑:好传媒网) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |