本篇文章主要介绍了" MySQL异常恢复之无主键情况下innodb数据恢复的方法"，主要涉及到方面的内容，对于MySql感兴趣的同学可以参考一下：
本文讲述了MySQL异常恢复之无主键情况下innodb数据恢复的方法。分享给大家供大家参考，具体如下：在mysql的innodb引擎的数据库异常恢复中,一般都要...
本文讲述了MySQL异常恢复之无主键情况下innodb数据恢复的方法。分享给大家供大家参考，具体如下：
在mysql的innodb引擎的数据库异常恢复中,一般都要求有主键或者唯一index,其实这个不是必须的,当没有index信息之时,可以在整个表级别的index_id进行恢复
创建模拟表—无主键
mysql> CREATE TABLE `t1` (
-> `messageId` varchar(30) character set utf8 NOT NULL,
-> `tokenId` varchar(20) character set utf8 NOT NULL,
-> `mobile` varchar(14) character set utf8 default NULL,
-> `msgFormat` int(1) NOT NULL,
-> `msgContent` varchar(1000) character set utf8 default NULL,
-> `scheduleDate` timestamp NOT NULL default '0000-00-00 00:00:00',
-> `deliverState` int(1) default NULL,
-> `deliverdTime` timestamp NOT NULL default '0000-00-00 00:00:00'
-> ) ENGINE=INnodb DEFAULT CHARSET=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> insert into t1 select * from sms_service.sms_send_record;
Query OK, 11 rows affected (0.00 sec)
Records: 11 Duplicates: 0 Warnings: 0
…………
mysql> insert into t1 select * from t1;
Query OK, 81664 rows affected (2.86 sec)
Records: 81664 Duplicates: 0 Warnings: 0
mysql> insert into t1 select * from t1;
Query OK, 163328 rows affected (2.74 sec)
Records: 163328 Duplicates: 0 Warnings: 0
mysql> select count(*) from t1;
+----------+
| count(*) |
+----------+
| 326656 |
+----------+
1 row in set (0.15 sec)
解析innodb文件
[root@web103 mysql_recovery]# rm -rf pages-ibdata1/
[root@web103 mysql_recovery]# ./stream_parser -f /var/lib/mysql/ibdata1
Opening file: /var/lib/mysql/ibdata1
File information:
ID of device containing file: 2049
inode number: 1344553
protection: 100660 (regular file)
number of hard links: 1
user ID of owner: 27
group ID of owner: 27
device ID (if special file): 0
blocksize for filesystem I/O: 4096
number of blocks allocated: 463312
time of last access: 1440819443 Sat Aug 29 11:37:23 2015
time of last modification: 1440819463 Sat Aug 29 11:37:43 2015
time of last status change: 1440819463 Sat Aug 29 11:37:43 2015
total size, in bytes: 236978176 (226.000 MiB)
Size to process: 236978176 (226.000 MiB)
Opening file: /var/lib/mysql/ibdata1
File information:
ID of device containing file: 2049
inode number: 1344553
protection: 100660 (regular file)
number of hard links: 1
user ID of owner: 27
group ID of owner: 27
device ID (if special file): 0
blocksize for filesystem I/O: 4096
number of blocks allocated: 463312
Opening file: /var/lib/mysql/ibdata1
File information:
time of last access: 1440819443 Sat Aug 29 11:37:23 2015
time of last modification: 1440819463 Sat Aug 29 11:37:43 2015
ID of device containing file: 2049
inode number: 1344553
protection: 100660 time of last status change: 1440819463 Sat Aug 29 11:37:43 2015
total size, in bytes: 236978176 (226.000 MiB)
Size to process: 236978176 (226.000 MiB)
Opening file: /var/lib/mysql/ibdata1
File information:
ID of device containing file: 2049
inode number: 1344553
protection: 100660 (regular file)
number of hard links: 1
user ID of owner: 27
group ID of owner: 27
device ID (if special file): 0
blocksize for filesystem I/O: 4096
number of blocks allocated: 463312
time of last access: 1440819443 Sat Aug 29 11:37:23 2015
time of last modification: 1440819463 Sat Aug 29 11:37:43 2015
time of last status change: 1440819463 Sat Aug 29 11:37:43 2015
total size, in bytes: 236978176 (226.000 MiB)
Size to process: 236978176 (226.000 MiB)
(regular file)
number of hard links: 1
user ID of owner: 27
group ID of owner: 27
device ID (if special file): 0
blocksize for filesystem I/O: 4096
number of blocks allocated: 463312
time of last access: 1440819443 Sat Aug 29 11:37:23 2015
time of last modification: 1440819463 Sat Aug 29 11:37:43 2015
time of last status change: 1440819463 Sat Aug 29 11:37:43 2015
total size, in bytes: 236978176 (226.000 MiB)
Size to process: 236978176 (226.000 MiB)
Opening file: /var/lib/mysql/ibdata1
File information:
ID of device containing file: 2049
inode number: 1344553
protection: 100660 (regular file)
number of hard links: 1
user ID of owner: 27
group ID of owner: 27
device ID (if special file): 0
blocksize for filesystem I/O: 4096
number of blocks allocated: 463312
time of last access: 1440819443 Sat Aug 29 11:37:23 2015
time of last modification: 1440819463 Sat Aug 29 11:37:43 2015
time of last status change: 1440819463 Sat Aug 29 11:37:43 2015
total size, in bytes: 236978176 (226.000 MiB)
Size to process: 236978176 (226.000 MiB)
Opening file: /var/lib/mysql/ibdata1
File information:
ID of device containing file: 2049
inode number: 1344553
protection: 100660 (regular file)
number of hard links: 1
user ID of owner: 27
group ID of owner: 27
device ID (if special file): 0
blocksize for filesystem I/O: 4096
number of blocks allocated: 463312
time of last access: 1440819443 Sat Aug 29 11:37:23 2015
time of last modification: 1440819463 Sat Aug 29 11:37:43 2015
time of last status change: 1440819463 Sat Aug 29 11:37:43 2015
Opening file: /var/lib/mysql/ibdata1
File information:
ID of device containing file: 2049
inode number: 1344553
protection: 100660 (regular file)
number of hard links: 1
user ID of owner: 27
group ID of owner: 27
device ID (if special file): 0
blocksize for filesystem I/O: 4096
number of blocks allocated: 463312
total size, in bytes: 236978176 (226.000 MiB)
Size to process: 236978176 (226.000 MiB)
time of last access: 1440819443 Sat Aug 29 11:37:23 2015
time of last modification: 1440819463 Sat Aug 29 11:37:43 2015
time of last status change: 1440819463 Sat Aug 29 11:37:43 2015
total size, in bytes: 236978176 (226.000 MiB)
Size to process: 236978176 (226.000 MiB)
Opening file: /var/lib/mysql/ibdata1
File information:
ID of device containing file: 2049
inode number: 1344553
protection: 100660 (regular file)
number of hard links: 1
user ID of owner: 27
group ID of owner: 27
device ID (if special file): 0
blocksize for filesystem I/O: 4096
number of blocks allocated: 463312
time of last access: 1440819465 Sat Aug 29 11:37:45 2015
time of last modification: 1440819463 Sat Aug 29 11:37:43 2015
time of last status change: 1440819463 Sat Aug 29 11:37:43 2015
total size, in bytes: 236978176 (226.000 MiB)
Size to process: 236978176 (226.000 MiB)
All workers finished in 0 sec
恢复数据字典
[root@web103 mysql_recovery]# ./recover_dictionary.sh
Generating dictionary tables dumps... OK
Creating test database ... OK
Creating dictionary tables in database test:
SYS_TABLES ... OK
SYS_COLUMNS ... OK
SYS_INDEXES ... OK
SYS_FIELDS ... OK
All OK
Loading dictionary tables data:
SYS_TABLES ... 48 recs OK
SYS_COLUMNS ... 397 recs OK
SYS_INDEXES ... 67 recs OK
SYS_FIELDS ... 89 recs OK
All OK
分析数据字典,找出来index_id
这里需要注意对于没有主键的表恢复,我们对应的类型是GEN_CLUST_INDEX
