风云阁资源网

MySQL异常恢复之无主键情况下innodb数据恢复的方法
数据库 2024/12/29 佚名
3 1

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

mysql> select * from SYS_TABLES where name='test/t1';
+----------------------------------------+-----+-------------+------+--------+---------+--------------+-------+
| NAME                  | ID | N_COLS   | TYPE | MIX_ID | MIX_LEN | CLUSTER_NAME | SPACE |
+----------------------------------------+-----+-------------+------+--------+---------+--------------+-------+
| test/t1                | 100 |      8 |  1 |   0 |    0 |       |   0 | 
+----------------------------------------+-----+-------------+------+--------+---------+--------------+-------+
40 rows in set (0.00 sec)
 
mysql> SELECT * FROM SYS_INDEXES where table_id=100;
+----------+-----+------------------------------+----------+------+-------+------------+
| TABLE_ID | ID | NAME             | N_FIELDS | TYPE | SPACE | PAGE_NO  |
+----------+-----+------------------------------+----------+------+-------+------------+
|   100 | 119 | GEN_CLUST_INDEX       |    0 |  1 |   0 |    2951 | 
+----------+-----+------------------------------+----------+------+-------+------------+
67 rows in set (0.00 sec)

恢复数据

root@web103 mysql_recovery]# ./c_parser -5f pages-ibdata1/FIL_PAGE_INDEX/0000000000000119.page -t dictionary/t1.sql >/tmp/2.txt 2>2.sql
[root@web103 mysql_recovery]# more /tmp/2.txt
-- Page id: 10848, Format: COMPACT, Records list: Valid, Expected records: (73 73)
00000002141B  0000009924F2  80000027133548 t1   "82334502212106951"   "SDK-BBX-010-18681"   "13718311436"  8    "尊敬的用户您好：您的手机验证码为916515如非本人操作，请拨打奥
斯卡客服：400-620-7575。"    "2010-01-01 00:00:00"  0    "1970-01-01 07:00:00"
00000002141C  0000009924F2  80000027133558 t1   "82339012756833423"   "SDK-BBX-010-18681"   "13718311436"  8    "尊敬的用户您好：您的手机验证码为396108如非本人操作，请拨打奥
斯卡客服：400-620-7575。"    "2010-01-01 00:00:00"  0    "1970-01-01 07:00:00"
00000002141D  0000009924F2  80000027133568 t1   "8234322198577796"   "SDK-BBX-010-18681"   "13718311436"  8    "尊敬的用户您好：您的手机验证码为935297如非本人操作，请拨打奥
斯卡客服：400-620-7575。"    "2010-01-01 00:00:00"  0    "1970-01-01 07:00:00"
00000002141E  0000009924F2  80000027133578 t1   "10235259536125650"   "SDK-BBX-010-18681"   "13718311436"  8    "尊敬的用户您好：您的手机验证码为474851如非本人操作，请拨打奥
斯卡客服：400-620-7575。"    "2010-01-01 00:00:00"  0    "1970-01-01 07:00:00"
00000002141F  0000009924F2  80000027133588 t1   "10235353811295807"   "SDK-BBX-010-18681"   "13718311436"  8    "尊敬的用户您好：您的手机验证码为444632如非本人操作，请拨打奥
斯卡客服：400-620-7575。"    "2010-01-01 00:00:00"  0    "1970-01-01 07:00:00"
000000021420  0000009924F2  80000027133598 t1   "102354211240398235"  "SDK-BBX-010-18681"   "13718311436"  8    "尊敬的用户您好：您的手机验证码为478503如非本人操作，请拨打奥
斯卡客服：400-620-7575。"    "2010-01-01 00:00:00"  0    "1970-01-01 07:00:00"
000000021421  0000009924F2  800000271335A8 t1   "102354554052884567"  "SDK-BBX-010-18681"   "13718311436"  8    "尊敬的用户您好：您的手机验证码为216825如非本人操作，请拨打奥
斯卡客服：400-620-7575。"    "2010-01-01 00:00:00"  0    "1970-01-01 07:00:00"
000000021422  0000009924F2  800000271335B8 t1   "132213454294519126"  "SDK-BBX-010-18681"   "13718311436"  8    "尊敬的用户您好：您的手机验证码为854812如非本人操作，请拨打奥
斯卡客服：400-620-7575。"    "2010-01-01 00:00:00"  0    "1970-01-01 07:00:00"
000000021423  0000009924F2  800000271335C8 t1   "82329022242584577"   "SDK-BBX-010-18681"   "13718311436"  8    "尊敬的用户您好：您的手机验证码为253127如非本人操作，请拨打奥
斯卡客服：400-620-7575。"    "2010-01-01 00:00:00"  0    "2015-08-26 22:02:17"
…………
[root@web103 mysql_recovery]# cat /tmp/2.txt|grep -v "Page id:"|wc -l
380731

因为没有主键,使得恢复出来记录可能有一些重复,整体而言,可以较为完美的恢复数据

更多关于MySQL相关内容感兴趣的读者可查看本站专题：《MySQL日志操作技巧大全》、《MySQL事务操作技巧汇总》、《MySQL存储过程技巧大全》、《MySQL数据库锁相关技巧汇总》及《MySQL常用函数大汇总》

希望本文所述对大家MySQL数据库计有所帮助。

风云阁资源网 Design By www.bgabc.com
广告合作：本站广告合作请联系QQ：858582 申请时备注：广告合作（否则不回）
免责声明：本站资源来自互联网收集,仅供用于学习和交流,请遵循相关法律法规,本站一切资源不代表本站立场,如有侵权、后门、不妥请联系本站删除！
风云阁资源网 Design By www.bgabc.com
www.bgabc.com 风云阁资源网
120,135影音资源
344,641技术资源
22,817软件资源
435,032站长资源

《魔兽世界》大逃杀！60人新游玩模式《强袭风暴》3月21日上线

暴雪近日发布了《魔兽世界》10.2.6 更新内容，新游玩模式《强袭风暴》即将于3月21 日在亚服上线，届时玩家将前往阿拉希高地展开一场 60 人大逃杀对战。

艾泽拉斯的冒险者已经征服了艾泽拉斯的大地及遥远的彼岸。他们在对抗世界上最致命的敌人时展现出过人的手腕，并且成功阻止终结宇宙等级的威胁。当他们在为即将于《魔兽世界》资料片《地心之战》中来袭的萨拉塔斯势力做战斗准备时，他们还需要在熟悉的阿拉希高地面对一个全新的敌人──那就是彼此。在《巨龙崛起》10.2.6 更新的《强袭风暴》中，玩家将会进入一个全新的海盗主题大逃杀式限时活动，其中包含极高的风险和史诗级的奖励。

《强袭风暴》不是普通的战场，作为一个独立于主游戏之外的活动，玩家可以用大逃杀的风格来体验《魔兽世界》，不分职业、不分装备（除了你在赛局中捡到的），光是技巧和战略的强弱之分就能决定出谁才是能坚持到最后的赢家。本次活动将会开放单人和双人模式，玩家在加入海盗主题的预赛大厅区域前，可以从强袭风暴角色画面新增好友。游玩游戏将可以累计名望轨迹，《巨龙崛起》和《魔兽世界：巫妖王之怒 经典版》的玩家都可以获得奖励。

更新日志

友情链接

杰晶网络 DDR爱好者之家 桃源资源网 杰网资源 富贵资源网 南强小屋 铁雪资源网 幽灵资源网 万梅资源网 狼山资源网 白云岛资源网 昆仑资源网 相思资源网 明霞山资源网 内蒙古资源网 黑松山资源网 茶园资源网 饿虎岗资源网 大旗谷资源网 常春岛资源网 岱庙资源网 兴国资源网 快活林资源网 蝙蝠岛资源网 帝王谷资源网 白云城资源网 伏龙阁资源网 清风细雨楼 天枫庄资源网 圆月山庄资源网 无争山庄资源网 神水资源网 移花宫资源网 神剑山庄资源网 无为清净楼资源网 金钱帮资源网 丐帮资源网 华山资源网 极乐门资源网 小李飞刀资源网 凤求凰客栈 风云阁资源网 金狮镖局 鸳鸯亭资源网 千金楼资源网 更多链接
风云阁资源网 Design By www.bgabc.com