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MySQL旧版本升级为新版本_MySQL

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Jun 01, 2016 pm 01:47 PM

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一：从版本3.23升级到4.10
4.10新特性：支持事务处理和存储过程

升级过程的注意事项：

1:升级采用直接复制安装文件的方法，简单实用，但要注意相关的配置更改； 2:直接复制备份的数据库不能通过复制的方法恢复，因此须采用mysqldump方法备份； 3:mysql4.1的用户管理与3.23有所不同，user表中增加了字段max_questions、max_updates、 max_connections，可以对不同的mysql用户进行不同设置，如果是备份/恢复用户就可以将max_questions、max_updates设置大些，具体设置值根据数据库的实际情况而定。

升级步骤：

1: 停止当前MySQL服务

#/www/mysql/bin/mysqladmin shutdown

2:备份数据文件

#cp

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