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HomeDatabaseMysql TutorialMySQL数据库InnoDB引擎下服务器断电数据恢复方法_MySQL

说明:

线上的一台MySQL数据库服务器突然断电,造成系统故障无法启动,重新安装系统后,找到之前的MySQL数据库文件夹。

问题:

通过复制文件的方式对之前的MySQL数据库进行恢复,发现在程序调用时找不到数据库中的表,造成网站无法正常访问。

分析:

1、MySQL数据库,使用拷贝文件方式来恢复数据库,只支持MyISAM引擎;
2、如果有数据库或数据表使用了InnoDB引擎,恢复的时候,必须连同MySQL数据库目录下的ibdata1文件一起拷贝过来。

解决办法:

1、停止MySQL服务

service mysqld stop

2、找之前的备份数据库文件

cd /home/mysql_bak/mysql/ #进入MySQL备份目录

ibdata1 #需要此文件

3、拷贝ibdata1文件到数据库相应目录

cp /home/mysql_bak/mysql/ibdata1 /usr/local/mysql/data/ibdata1 #拷贝文件到现在的数据库目录
chown mysql.mysql /usr/local/mysql/data/ibdata1 #设置权限位mysql用户和用户组
rm /usr/local/mysql/data/ib_logfile0 #删除现有日志文件,否则启动MySQL失败
rm /usr/local/mysql/data/ib_logfile1 #删除现有日志文件,否则启动MySQL失败


4、启动MySQL

service mysqld start

故障解决

此时页面已正常打开。

ibdata1作用:InnoDB引擎下的表数据文件。

建议:数据库一定要做好备份,恢复数据最好使用.sql备份文件导入。

至此,MySQL数据库InnoDB引擎下服务器断电数据恢复教程完成。

 以上就是MySQL数据库InnoDB引擎下服务器断电数据恢复方法_MySQL的内容,更多相关内容请关注PHP中文网(www.php.cn)!


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