Home Database Mysql Tutorial 亲测Mysql表结构为InnoDB类型从ibd文件恢复数据_MySQL

亲测Mysql表结构为InnoDB类型从ibd文件恢复数据_MySQL

Jun 01, 2016 pm 01:01 PM
document type structure

客户的机器系统异常关机,重启后mysql数据库不能正常启动,重装系统后发现数据库文件损坏,悲催的是客户数据库没有进行及时备份,只能想办法从数据库文件当中恢复,查找资料,试验各种方法,确认下面步骤可行:

一、找回表结构,如果表结构没有丢失直接到下一步
a、先创建一个数据库,这个数据库必须是没有表和任何操作的。
b、创建一个表结构,和要恢复的表名是一样的。表里的字段无所谓。一定要是innodb引擎的。CREATE TABLE `test`( `testID` bigint(20)) ENGINE=InnoDB DEFAULT CHARSET=utf8;
c、关闭mysql, service mysqld stop;
d、用需要恢复的frm文件覆盖刚新建的frm文件;
e、修改my.ini 里 innodb_force_recovery=1 , 如果不成修改为 2,3,4,5,6。
f、 启动mysql,service mysqld start;show create table test就能够看到表结构信息了。

二、找回数据

a、建立一个数据库,根据上面导出的创建表的sql执行创建表。
b、找到记录点。先要把当前数据库的表空间废弃掉,使当前ibd的数据文件和frm分离。 ALTER TABLE test DISCARD TABLESPACE;
c、把之前要恢复的 .ibd文件复制到新的表结构文件夹下。 使当前的ibd 和frm发生关系。ALTER TABLE test IMPORT TABLESPACE;

d、将恢复好的数据导出就行了

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