MySQL drop database恢复(恢复方法同样适用MySQL drop table,delete,truncate table)

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标题:MySQL drop database恢复(恢复方法同样适用MySQL drop table,delete,truncate table)

作者:惜分飞©版权所有[未经本人同意,不得以任何形式转载,否则有进一步追究法律责任的权利.]

昨天晚上接到一个网络服务请求,由于不小心点击了自己产品软件上面的清空数据功能(这个工具确实需要小心,在Oracle恢复案例中,也有xx企业erp该功能导致数据被删除请求恢复),导致MySQL数据库被直接drop database掉了,之前没有做任何备份,只是发生故障之后,他们立即封存现场,备份出来了ibdata1文件。接到请求之后,通过让其把ibdata1文件发给过来,通过MySQL recovery工具进行分析恢复,经过6个小时的处理,基本上实现核心数据0丢失.
解析ibdata1(innodb文件)

[root@localhost recovery_MySQL]# ./stream_parser -f /tmp/ibdata1
Opening file: /tmp/ibdata1
File information:

ID of device containing file:         2055
inode number:                        97257
protection:                         100644 (regular file)
number of hard links:                    1
user ID of owner:                        0
group ID of owner:                       0
device ID (if special file):             0
blocksize for filesystem I/O:         4096
number of blocks allocated:          36920
Opening file: /tmp/ibdata1
time of last access:            1440083236 Thu Aug 20 23:07:16 2015
File information:

time of last modification:      1440062236 Thu Aug 20 17:17:16 2015
time of last status change:     1440081904 Thu Aug 20 22:45:04 2015
ID of device containing file:         2055
inode number:                        97257
protection:                         100644 total size, in bytes:             18874368 (18.000 MiB)

(regular file)
number of hard links:                    1
user ID of owner:                        0
group ID of owner:                       0
device ID (if special file):             0
blocksize for filesystem I/O:         4096
number of blocks allocated:          36920
Size to process:                  18874368 (18.000 MiB)
Opening file: /tmp/ibdata1
File information:

ID of device containing file:         2055
inode number:                        97257
protection:                         100644 (regular file)
number of hard links:                    1
user ID of owner:                        0
group ID of owner:                       0
device ID (if special file):             0
blocksize for filesystem I/O:         4096
number of blocks allocated:          36920
time of last access:            1440083236 Thu Aug 20 23:07:16 2015
time of last modification:      1440062236 Thu Aug 20 17:17:16 2015
time of last status change:     1440081904 Thu Aug 20 22:45:04 2015
total size, in bytes:             18874368 (18.000 MiB)

Opening file: /tmp/ibdata1
File information:

Size to process:                  18874368 (18.000 MiB)
ID of device containing file:         2055
inode number:                        97257
protection:                         100644 (regular file)
time of last access:            1440083236 Thu Aug 20 23:07:16 2015
number of hard links:                    1
user ID of owner:                        0
time of last modification:      1440062236 Thu Aug 20 17:17:16 2015
group ID of owner:                       0
time of last status change:     1440081904 Thu Aug 20 22:45:04 2015
device ID (if special file):             0
blocksize for filesystem I/O:         4096
number of blocks allocated:          36920
total size, in bytes:             18874368 (18.000 MiB)

Size to process:                  18874368 (18.000 MiB)
Opening file: /tmp/ibdata1
File information:

ID of device containing file:         2055
inode number:                        97257
protection:                         100644 (regular file)
number of hard links:                    1
user ID of owner:                        0
time of last access:            1440083236 Thu Aug 20 23:07:16 2015
group ID of owner:                       0
device ID (if special file):             0
time of last modification:      1440062236 Thu Aug 20 17:17:16 2015
blocksize for filesystem I/O:         4096
time of last status change:     1440081904 Thu Aug 20 22:45:04 2015
number of blocks allocated:          36920
Opening file: /tmp/ibdata1
total size, in bytes:             18874368 (18.000 MiB)

File information:

Size to process:                  18874368 (18.000 MiB)
ID of device containing file:         2055
inode number:                        97257
protection:                         100644 (regular file)
number of hard links:                    1
user ID of owner:                        0
group ID of owner:                       0
device ID (if special file):             0
time of last access:            1440083236 Thu Aug 20 23:07:16 2015
blocksize for filesystem I/O:         4096
time of last modification:      1440062236 Thu Aug 20 17:17:16 2015
number of blocks allocated:          36920
time of last status change:     1440081904 Thu Aug 20 22:45:04 2015
Opening file: /tmp/ibdata1
total size, in bytes:             18874368 (18.000 MiB)

File information:

Size to process:                  18874368 (18.000 MiB)
ID of device containing file:         2055
inode number:                        97257
protection:                         100644 (regular file)
number of hard links:                    1
user ID of owner:                        0
group ID of owner:                       0
device ID (if special file):             0
blocksize for filesystem I/O:         4096
number of blocks allocated:          36920
time of last access:            1440083236 Thu Aug 20 23:07:16 2015
time of last modification:      1440062236 Thu Aug 20 17:17:16 2015
time of last status change:     1440081904 Thu Aug 20 22:45:04 2015
Opening file: /tmp/ibdata1
File information:

total size, in bytes:             18874368 (18.000 MiB)

ID of device containing file:         2055
inode number:                        97257
protection:                         100644 Size to process:                  18874368 (18.000 MiB)
(regular file)
number of hard links:                    1
time of last access:            1440083236 Thu Aug 20 23:07:16 2015
user ID of owner:                        0
group ID of owner:                       0
time of last modification:      1440062236 Thu Aug 20 17:17:16 2015
Opening file: /tmp/ibdata1
time of last status change:     1440081904 Thu Aug 20 22:45:04 2015
device ID (if special file):             0
File information:

blocksize for filesystem I/O:         4096
number of blocks allocated:          36920
total size, in bytes:             18874368 (18.000 MiB)

ID of device containing file:         2055
inode number:                        97257
protection:                         100644 (regular file)
Size to process:                  18874368 (18.000 MiB)
number of hard links:                    1
user ID of owner:                        0
group ID of owner:                       0
device ID (if special file):             0
blocksize for filesystem I/O:         4096
number of blocks allocated:          36920
time of last access:            1440083236 Thu Aug 20 23:07:16 2015
Opening file: /tmp/ibdata1
time of last modification:      1440062236 Thu Aug 20 17:17:16 2015
File information:

time of last status change:     1440081904 Thu Aug 20 22:45:04 2015
ID of device containing file:         2055
total size, in bytes:             18874368 (18.000 MiB)

inode number:                        97257
protection:                         100644 (regular file)
number of hard links:                    1
user ID of owner:                        0
Size to process:                  18874368 (18.000 MiB)
group ID of owner:                       0
time of last access:            1440083236 Thu Aug 20 23:07:16 2015
device ID (if special file):             0
blocksize for filesystem I/O:         4096
time of last modification:      1440062236 Thu Aug 20 17:17:16 2015
number of blocks allocated:          36920
time of last status change:     1440081904 Thu Aug 20 22:45:04 2015
total size, in bytes:             18874368 (18.000 MiB)

Opening file: /tmp/ibdata1
Size to process:                  18874368 (18.000 MiB)
File information:

ID of device containing file:         2055
inode number:                        97257
protection:                         100644 (regular file)
number of hard links:                    1
time of last access:            1440083236 Thu Aug 20 23:07:16 2015
user ID of owner:                        0
group ID of owner:                       0
time of last modification:      1440062236 Thu Aug 20 17:17:16 2015
device ID (if special file):             0
time of last status change:     1440081904 Thu Aug 20 22:45:04 2015
blocksize for filesystem I/O:         4096
number of blocks allocated:          36920
total size, in bytes:             18874368 (18.000 MiB)

Size to process:                  18874368 (18.000 MiB)
Opening file: /tmp/ibdata1
File information:

ID of device containing file:         2055
inode number:                        97257
protection:                         100644 (regular file)
number of hard links:                    1
user ID of owner:                        0
group ID of owner:                       0
time of last access:            1440083236 Thu Aug 20 23:07:16 2015
device ID (if special file):             0
time of last modification:      1440062236 Thu Aug 20 17:17:16 2015
blocksize for filesystem I/O:         4096
time of last status change:     1440081904 Thu Aug 20 22:45:04 2015
number of blocks allocated:          36920
total size, in bytes:             18874368 (18.000 MiB)

Opening file: /tmp/ibdata1
File information:

Size to process:                  18874368 (18.000 MiB)
ID of device containing file:         2055
inode number:                        97257
protection:                         100644 (regular file)
number of hard links:                    1
user ID of owner:                        0
group ID of owner:                       0
device ID (if special file):             0
blocksize for filesystem I/O:         4096
number of blocks allocated:          36920
time of last access:            1440083236 Thu Aug 20 23:07:16 2015
time of last modification:      1440062236 Thu Aug 20 17:17:16 2015
time of last status change:     1440081904 Thu Aug 20 22:45:04 2015
total size, in bytes:             18874368 (18.000 MiB)

Opening file: /tmp/ibdata1
File information:

Size to process:                  18874368 (18.000 MiB)
ID of device containing file:         2055
inode number:                        97257
time of last access:            1440083236 Thu Aug 20 23:07:16 2015
protection:                         100644 (regular file)
time of last modification:      1440062236 Thu Aug 20 17:17:16 2015
number of hard links:                    1
time of last status change:     1440081904 Thu Aug 20 22:45:04 2015
user ID of owner:                        0
group ID of owner:                       0
device ID (if special file):             0
blocksize for filesystem I/O:         4096
total size, in bytes:             18874368 (18.000 MiB)

number of blocks allocated:          36920
Size to process:                  18874368 (18.000 MiB)
time of last access:            1440083236 Thu Aug 20 23:07:16 2015
time of last modification:      1440062236 Thu Aug 20 17:17:16 2015
time of last status change:     1440081904 Thu Aug 20 22:45:04 2015
total size, in bytes:             18874368 (18.000 MiB)

Size to process:                  18874368 (18.000 MiB)
Opening file: /tmp/ibdata1
File information:

ID of device containing file:         2055
inode number:                        97257
protection:                         100644 (regular file)
number of hard links:                    1
user ID of owner:                        0
group ID of owner:                       0
device ID (if special file):             0
blocksize for filesystem I/O:         4096
number of blocks allocated:          36920
time of last access:            1440083236 Thu Aug 20 23:07:16 2015
time of last modification:      1440062236 Thu Aug 20 17:17:16 2015
time of last status change:     1440081904 Thu Aug 20 22:45:04 2015
total size, in bytes:             18874368 (18.000 MiB)

Size to process:                  18874368 (18.000 MiB)
Opening file: /tmp/ibdata1
File information:

ID of device containing file:         2055
inode number:                        97257
protection:                         100644 (regular file)
number of hard links:                    1
user ID of owner:                        0
group ID of owner:                       0
device ID (if special file):             0
blocksize for filesystem I/O:         4096
number of blocks allocated:          36920
time of last access:            1440083236 Thu Aug 20 23:07:16 2015
time of last modification:      1440062236 Thu Aug 20 17:17:16 2015
time of last status change:     1440081904 Thu Aug 20 22:45:04 2015
total size, in bytes:             18874368 (18.000 MiB)

Size to process:                  18874368 (18.000 MiB)
All workers finished in 0 sec

[root@localhost recovery_MySQL]# cd pages-ibdata1
[root@localhost pages-ibdata1]# ls -l
total 16
drwxr-xr-x 2 root root 4096 Aug 20 22:53 FIL_PAGE_INDEX
drwxr-xr-x 2 root root 4096 Aug 20 22:53 FIL_PAGE_TYPE_BLOB
[root@localhost pages-ibdata1]# cd FIL_PAGE_INDEX
[root@localhost FIL_PAGE_INDEX]# ls -l
total 9924
-rw-r--r-- 1 root root   32768 Aug 20 22:53 0000000000000001.page
-rw-r--r-- 1 root root  278528 Aug 20 22:53 0000000000000002.page
-rw-r--r-- 1 root root   32768 Aug 20 22:53 0000000000000003.page
-rw-r--r-- 1 root root   32768 Aug 20 22:53 0000000000000004.page
-rw-r--r-- 1 root root   32768 Aug 20 22:53 0000000000000005.page
-rw-r--r-- 1 root root   16384 Aug 20 22:53 0000000000000011.page
-rw-r--r-- 1 root root   16384 Aug 20 22:53 0000000000000012.page
-rw-r--r-- 1 root root   16384 Aug 20 22:53 0000000000000013.page
-rw-r--r-- 1 root root   16384 Aug 20 22:53 0000000000000014.page
-rw-r--r-- 1 root root 2883584 Aug 20 22:53 0000000000000065.page
-rw-r--r-- 1 root root  475136 Aug 20 22:53 0000000000000066.page
-rw-r--r-- 1 root root  737280 Aug 20 22:53 0000000000000067.page
-rw-r--r-- 1 root root   49152 Aug 20 22:53 0000000000000068.page
-rw-r--r-- 1 root root   16384 Aug 20 22:53 0000000000000069.page
-rw-r--r-- 1 root root   16384 Aug 20 22:53 0000000000000070.page
-rw-r--r-- 1 root root   16384 Aug 20 22:53 0000000000000071.page
-rw-r--r-- 1 root root   16384 Aug 20 22:53 0000000000000072.page
-rw-r--r-- 1 root root   16384 Aug 20 22:53 0000000000000073.page
-rw-r--r-- 1 root root   16384 Aug 20 22:53 0000000000000074.page
-rw-r--r-- 1 root root   16384 Aug 20 22:53 0000000000000075.page
-rw-r--r-- 1 root root   16384 Aug 20 22:53 0000000000000076.page
-rw-r--r-- 1 root root   16384 Aug 20 22:53 0000000000000077.page
-rw-r--r-- 1 root root   49152 Aug 20 22:53 0000000000000078.page
-rw-r--r-- 1 root root   49152 Aug 20 22:53 0000000000000079.page
-rw-r--r-- 1 root root   49152 Aug 20 22:53 0000000000000080.page
-rw-r--r-- 1 root root   49152 Aug 20 22:53 0000000000000081.page
-rw-r--r-- 1 root root   49152 Aug 20 22:53 0000000000000082.page
-rw-r--r-- 1 root root   49152 Aug 20 22:53 0000000000000083.page
-rw-r--r-- 1 root root   49152 Aug 20 22:53 0000000000000084.page
-rw-r--r-- 1 root root  753664 Aug 20 22:53 0000000000000085.page
-rw-r--r-- 1 root root   49152 Aug 20 22:53 0000000000000086.page
-rw-r--r-- 1 root root   49152 Aug 20 22:53 0000000000000087.page
-rw-r--r-- 1 root root   49152 Aug 20 22:53 0000000000000088.page
-rw-r--r-- 1 root root   49152 Aug 20 22:53 0000000000000089.page
-rw-r--r-- 1 root root  901120 Aug 20 22:53 0000000000000110.page
-rw-r--r-- 1 root root 2097152 Aug 20 22:53 0000000000000115.page
-rw-r--r-- 1 root root   98304 Aug 20 22:53 0000000000000116.page
-rw-r--r-- 1 root root   98304 Aug 20 22:53 0000000000000117.page
-rw-r--r-- 1 root root   98304 Aug 20 22:53 0000000000000118.page
-rw-r--r-- 1 root root   98304 Aug 20 22:53 0000000000000119.page
-rw-r--r-- 1 root root   49152 Aug 20 22:53 0000000000000120.page
-rw-r--r-- 1 root root   98304 Aug 20 22:53 0000000000000121.page
-rw-r--r-- 1 root root   98304 Aug 20 22:53 0000000000000122.page
-rw-r--r-- 1 root root   98304 Aug 20 22:53 0000000000000123.page
-rw-r--r-- 1 root root   98304 Aug 20 22:53 0000000000000124.page
-rw-r--r-- 1 root root   16384 Aug 20 22:53 18446744069414584320.page
[root@localhost FIL_PAGE_INDEX]# 

分析数据字典

[root@localhost recovery_MySQL]# ./recover_dictionary.sh

Generating dictionary tables dumps... OK
Creating test database ... Warning: Using a password on the command line interface can be insecure.
OK
Creating dictionary tables in database test:
SYS_TABLES ... Warning: Using a password on the command line interface can be insecure.
OK
SYS_COLUMNS ... Warning: Using a password on the command line interface can be insecure.
OK
SYS_INDEXES ... Warning: Using a password on the command line interface can be insecure.
OK
SYS_FIELDS ... Warning: Using a password on the command line interface can be insecure.
OK
All OK
Loading dictionary tables data:
SYS_TABLES ... Warning: Using a password on the command line interface can be insecure.
34 recs OK
SYS_COLUMNS ... Warning: Using a password on the command line interface can be insecure.
3061 recs OK
SYS_INDEXES ... Warning: Using a password on the command line interface can be insecure.
206 recs OK
SYS_FIELDS ... Warning: Using a password on the command line interface can be insecure.
206 recs OK
All OK

关于MySQL数据字典恢复,也可以参考另外一篇文章:使用工具直接抽取MySQL数据字典

查看数据库中记录情况

[root@localhost recovery_MySQL]# MySQL -uroot -p123456
Warning: Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 34954
Server version: 5.6.21 MySQL Community Server (GPL)

Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MySQL> use test;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
MySQL> show tables;
+----------------+
| Tables_in_test |
+----------------+
| SYS_COLUMNS    |
| SYS_FIELDS     |
| SYS_INDEXES    |
| SYS_TABLES     |
+----------------+
4 rows in set (0.00 sec)

MySQL> SELECT NAME,ID from SYS_TABLES;
+-------------------------+----+
| NAME                    | ID |
+-------------------------+----+
| cnywmcom/zx_account_log | 31 |
| cnywmcom/zx_area_code   | 32 |
| cnywmcom/zx_goods_group | 33 |
| cnywmcom/zx_manage_type | 34 |
| cnywmcom/zx_order_goods | 35 |
| cnywmcom/zx_order_info  | 36 |
| cnywmcom/zx_param       | 37 |
| cnywmcom/zx_users       | 46 |
| cnywmcom/zx_user_type   | 38 |
| SYS_FOREIGN             | 11 |
| SYS_FOREIGN_COLS        | 12 |
+-------------------------+----+
11 rows in set (0.00 sec)

MySQL> select * from SYS_INDEXES;
+----------+-----+-----------------+----------+------+-------+---------+
| TABLE_ID | ID  | NAME            | N_FIELDS | TYPE | SPACE | PAGE_NO |
+----------+-----+-----------------+----------+------+-------+---------+
|       11 |  11 | ID_IND          |        1 |    3 |     0 |      46 |
|       11 |  12 | FOR_IND         |        1 |    0 |     0 |      47 |
|       11 |  13 | REF_IND         |        1 |    0 |     0 |      48 |
|       12 |  14 | ID_IND          |        2 |    3 |     0 |      49 |
|       31 |  65 | PRIMARY         |        1 |    3 |     0 |      50 |
|       31 |  66 | user_id         |        1 |    0 |     0 |     216 |
|       32 |  67 | PRIMARY         |        1 |    3 |     0 |      52 |
|       33 |  68 | PRIMARY         |        1 |    3 |     0 |     205 |
|       34 |  69 | PRIMARY         |        1 |    3 |     0 |      54 |
|       35 |  70 | PRIMARY         |        1 |    3 |     0 |      55 |
|       35 |  71 | order_id        |        1 |    0 |     0 |      56 |
|       35 |  72 | goods_id        |        1 |    0 |     0 |      57 |
|       36 |  73 | PRIMARY         |        1 |    3 |     0 |      59 |
|       36 |  74 | order_sn        |        1 |    2 |     0 |      60 |
|       36 |  75 | user_id         |        1 |    0 |     0 |      61 |
|       36 |  76 | order_status    |        1 |    0 |     0 |      62 |
|       36 |  77 | shipping_status |        1 |    0 |     0 |      63 |
|       36 |  78 | pay_status      |        1 |    0 |     0 |     192 |
|       36 |  79 | shipping_id     |        1 |    0 |     0 |     193 |
|       36 |  80 | pay_id          |        1 |    0 |     0 |     194 |
|       36 |  81 | extension_code  |        2 |    0 |     0 |     195 |
|       36 |  82 | agency_id       |        1 |    0 |     0 |     203 |
|       37 |  83 | PRIMARY         |        1 |    3 |     0 |     196 |
|       38 |  84 | PRIMARY         |        1 |    3 |     0 |     206 |
|       46 | 120 | PRIMARY         |        1 |    3 |     0 |      58 |
|       46 | 121 | user_name       |        1 |    2 |     0 |     256 |
|       46 | 122 | email           |        1 |    0 |     0 |     257 |
|       46 | 123 | parent_id       |        1 |    0 |     0 |     258 |
|       46 | 124 | flag            |        1 |    0 |     0 |     259 |
+----------+-----+-----------------+----------+------+-------+---------+
29 rows in set (0.00 sec)

通过这里,我们就可以明确的知道,我们需要恢复的表的page是多少了,这里举例说明恢复表cnywmcom.zx_account_log,我们需要去分析65号page

分析表恢复

[root@localhost recovery_MySQL]# ./c_parser -5f pages-ibdata1/FIL_PAGE_INDEX/0000000000000065.page -t dictionary/zx_account_log.sql|more
-- Page id: 223, Format: COMPACT, Records list: Invalid, Expected records: (0 7)
0B0C2000101C    55000230000000  zx_account_log  2979181 270888  "0"0"0.00"      "0.00"  "0.00"  2147483649      ""      0       ""      "0.00"  "-10643256.27"  "06."   "06."   "0782
7251.51"        "0.5"   "0.5"   "0.5"   "0.5"
000000042228    00000001040135  zx_account_log  561     1       "0.00"  "0.00"  "0.00"  "1.00"  "0.00"  1436840718      "会员注册"      99      "13818289939"   "1.00"  "0.00"  "0.00"  "0.00
"       "0.00"  "0.00"  "0.00"  "0.00"  "0.00"
000000042228    0000000104015A  zx_account_log  562     136     "0.00"  "0.00"  "0.00"  "1.00"  "0.00"  1436841067      "会员注册"      99      "17828025855"   "1.00"  "0.00"  "0.00"  "0.00
"       "0.00"  "0.00"  "0.00"  "0.00"  "0.00"
000000042228    0000000104017F  zx_account_log  563     137     "0.00"  "0.00"  "0.00"  "1.00"  "0.00"  1436842239      "会员注册"      99      "18617157667"   "1.00"  "0.00"  "0.00"  "0.00
"       "0.00"  "0.00"  "0.00"  "0.00"  "0.00"
000000042228    000000010401A4  zx_account_log  564     139     "0.00"  "0.00"  "0.00"  "1.00"  "0.00"  1436846738      "会员注册"      99      "18113070688"   "1.00"  "0.00"  "0.00"  "0.00
"       "0.00"  "0.00"  "0.00"  "0.00"  "0.00"
000000042228    000000010401C9  zx_account_log  565     1       "0.00"  "0.00"  "0.00"  "1.00"  "0.00"  1436848523      "会员注册"      99      "13623646573"   "1.00"  "0.00"  "0.00"  "0.00
"       "0.00"  "0.00"  "0.00"  "0.00"  "0.00"

至此该表的数据已经恢复出来,剩下任务就是把数据保存为文件,并且导入到新库中.然后依次处理相关表.至此完成这次drop database的恢复.在恢复过程中,遇到不少坑,比如有些记录在对应的page中无法找到,需要进行额外处理.对于乱码问题需要进一步处理等.通过一系列的恢复,给客户恢复了所有核心表,实现核心数据0丢失.通过这次的恢复,已经证明我们不光是Oracle恢复中的行业强者,在MySQL数据库的各种故障中,我们也有立足之地.如果有MySQL数据库的恢复(误删除数据/delete,误删除表/drop table,误截断表/truncate table,误删除数据库/drop database,MySQL不能启动,ibdata1文件损坏/丢失等MySQL各种恢复)请求,如果您遇到MySQL恢复问题无法自行解决,请联系我们提供专业服务,最大程度减小您的损失:

Phone:13429648788    Q Q:107644445    E-Mail:dba@xifenfei.com

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