在使用独立表空间的情况下,如果不慎使得innodb存储引擎的元数据文件ibdata损坏,我们还可以挽救宝贵的数据.因为在innodb使用独立表
在使用独立表空间的情况下,如果不慎使得innodb存储引擎的元数据文件ibdata损坏,我们还可以挽救宝贵的数据.因为在innodb使用独立表空间的情况下,ibdata文件会记录每个innodb表的id,只要使得ibd中的表id和ibdata文件中记录的表id相同,就能够打开表,读取到数据.
#创建表
CREATE TABLE `ibdtest` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`fid` int(11) NOT NULL COMMENT '表b中的id',
`content` char(255) NOT NULL COMMENT '操作内容,系统生成',
`mark` char(255) NOT NULL COMMENT '备注',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
#添加数据
INSERT ibdtest (fid,content,mark) VALUES (1,'1','1'),(2,'2','2');
SELECT * FROM ibdtest;
关闭mysql将ibdtest.ibd copy出来,放到其他数据库中来模拟灾难.
[root@localhost ~]#/opt/soft/mysql/bin/mysqladmin -p123456 shutdown
120130 18:31:50 mysqld_safe mysqld from pidfile /opt/soft/mysql/60137.localdomain.pid ended
[1]+ Done /opt/soft/mysql/bin/mysqld_safe--defaults-file=/opt/soft/mysql/config/my.cnf --user=mysql

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