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mysql執行drop table 數據恢復方法
對於MySQL數據庫的innodb引擎的數據庫中,由於誤操作刪除表,或者由於sqldump自動生成語句含drop table create table語句導致數據丟失,在沒有覆蓋的情況下,可以實現完美恢復
創建測試表
mysql> CREATE TABLE recover.`t_drop` ( -> `messageId` varchar(30) NOT NULL, -> `msgContent` varchar(1000) default NULL, -> `scheduleDate` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP, -> `deliverState` int(1) default NULL, -> PRIMARY KEY (`messageId`) -> ) ENGINE=InnoDB DEFAULT CHARSET=utf8; Query OK, 0 rows affected (0.00 sec) mysql> insert into recover.t_drop select messageId,msgContent,scheduleDate,deliverState from sms_send_record; Query OK, 11 rows affected (0.00 sec) Records: 11 Duplicates: 0 Warnings: 0 mysql> select * from recover.`t_drop`; +--------------------+----------------------------------------------------------------------------------+---------------------+--------------+ | messageId | msgContent | scheduleDate | deliverState | +--------------------+----------------------------------------------------------------------------------+---------------------+--------------+ | 10235259536125650 | 尊敬的用戶您好：您的手機驗證碼為474851如非本人操作，請撥打奧斯卡客服：400-620-757 | 2010-01-01 00:00:00 | 0 | | 10235353811295807 | 尊敬的用戶您好：您的手機驗證碼為444632如非本人操作，請撥打奧斯卡客服：400-620-757 | 2010-01-01 00:00:00 | 0 | | 102354211240398235 | 尊敬的用戶您好：您的手機驗證碼為478503如非本人操作，請撥打奧斯卡客服：400-620-757 | 2010-01-01 00:00:00 | 0 | | 102354554052884567 | 尊敬的用戶您好：您的手機驗證碼為216825如非本人操作，請撥打奧斯卡客服：400-620-757 | 2010-01-01 00:00:00 | 0 | | 132213454294519126 | 尊敬的用戶您好：您的手機驗證碼為854812如非本人操作，請撥打奧斯卡客服：400-620-757 | 2010-01-01 00:00:00 | 0 | | 82329022242584577 | 尊敬的用戶您好：您的手機驗證碼為253127如非本人操作，請撥打奧斯卡客服：400-620-757 | 2010-01-01 00:00:00 | 0 | | 82329022242584581 | 尊敬的用戶您好：您的手機驗證碼為253127如非本人操作，請撥打奧斯卡客服：400-620-757 | 2010-01-01 00:00:00 | 0 | | 8233400415607376 | 尊敬的用戶您好：您的手機驗證碼為338470如非本人操作，請撥打奧斯卡客服：400-620-757 | 2010-01-01 00:00:00 | 0 | | 82334502212106951 | 尊敬的用戶您好：您的手機驗證碼為916515如非本人操作，請撥打奧斯卡客服：400-620-757 | 2010-01-01 00:00:00 | 0 | | 82339012756833423 | 尊敬的用戶您好：您的手機驗證碼為396108如非本人操作，請撥打奧斯卡客服：400-620-757 | 2010-01-01 00:00:00 | 0 | | 8234322198577796 | 尊敬的用戶您好：您的手機驗證碼為935297如非本人操作，請撥打奧斯卡客服：400-620-757 | 2010-01-01 00:00:00 | 0 | +--------------------+----------------------------------------------------------------------------------+---------------------+--------------+ 11 rows in set (0.00 sec) mysql> checksum table t_drop; +-----------------+-----------+ | Table | Checksum | +-----------------+-----------+ | recover.t_drop | 920719058 | +-----------------+-----------+ 1 row in set (0.00 sec)
刪除測試表,後續用來恢復
mysql> drop table recover.t_drop; Query OK, 0 rows affected (0.00 sec)
解析ibdata文件
[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: 1440825416 Sat Aug 29 13:16:56 2015 time of last modification: 1440855835 Sat Aug 29 21:43:55 2015 time of last status change: 1440855835 Sat Aug 29 21:43:55 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: 1440825416 Sat Aug 29 13:16:56 2015 time of last modification: 1440855835 Sat Aug 29 21:43:55 2015 time of last status change: 1440855835 Sat Aug 29 21:43:55 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: 1440825416 Sat Aug 29 13:16:56 2015 time of last modification: 1440855835 Sat Aug 29 21:43:55 2015 time of last status change: 1440855835 Sat Aug 29 21:43:55 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: 1440825416 Sat Aug 29 13:16:56 2015 time of last modification: 1440855835 Sat Aug 29 21:43:55 2015 time of last status change: 1440855835 Sat Aug 29 21:43:55 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: 1440825416 Sat Aug 29 13:16:56 2015 time of last modification: 1440855835 Sat Aug 29 21:43:55 2015 time of last status change: 1440855835 Sat Aug 29 21:43:55 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: 1440825416 Sat Aug 29 13:16:56 2015 time of last modification: 1440855835 Sat Aug 29 21:43:55 2015 time of last status change: 1440855835 Sat Aug 29 21:43:55 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: 1440855928 Sat Aug 29 21:45:28 2015 time of last modification: 1440855835 Sat Aug 29 21:43:55 2015 time of last status change: 1440855835 Sat Aug 29 21:43:55 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: 1440855928 Sat Aug 29 21:45:28 2015 time of last modification: 1440855835 Sat Aug 29 21:43:55 2015 time of last status change: 1440855835 Sat Aug 29 21:43:55 2015 total size, in bytes: 236978176 (226.000 MiB) Size to process: 236978176 (226.000 MiB) Worker(1): 56.64% done. 2015-08-29 21:45:30 ETA(in 00:00:01). Processing speed: 8.000 MiB/sec Worker(0): 56.64% done. 2015-08-29 21:45:30 ETA(in 00:00:01). Processing speed: 8.000 MiB/sec Worker(4): 56.64% done. 2015-08-29 21:45:30 ETA(in 00:00:01). Processing speed: 8.000 MiB/sec Worker(3): 56.64% done. 2015-08-29 21:45:30 ETA(in 00:00:01). Processing speed: 8.000 MiB/sec Worker(2): 56.64% done. 2015-08-29 21:45:30 ETA(in 00:00:01). Processing speed: 8.000 MiB/sec Worker(7): 56.64% done. 2015-08-29 21:45:30 ETA(in 00:00:01). Processing speed: 8.000 MiB/sec Worker(5): 56.64% done. 2015-08-29 21:45:30 ETA(in 00:00:01). Processing speed: 8.000 MiB/sec Worker(6): 56.64% done. 2015-08-29 21:45:30 ETA(in 00:00:01). Processing speed: 8.000 MiB/sec All workers finished in 1 sec
恢復mysql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 ... 162 recs OK SYS_COLUMNS ... 1247 recs OK SYS_INDEXES ... 216 recs OK SYS_FIELDS ... 411 recs OK All OK [root@web103 mysql_recovery]# mysql test Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 10162 Server version: 5.0.95 Source distribution Copyright (c) 2000, 2011, 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> select * from SYS_TABLES WHERE name like 'recover%'; +-------------------------+-----+--------+------+--------+---------+--------------+-------+ | NAME | ID | N_COLS | TYPE | MIX_ID | MIX_LEN | CLUSTER_NAME | SPACE | +-------------------------+-----+--------+------+--------+---------+--------------+-------+ | recover/#sql-64a9_1f6d | 120 | 8 | 1 | 0 | 0 | | 0 | | recover/#sql2-64a9-1f6d | 115 | 8 | 1 | 0 | 0 | | 0 | | recover/t_delete | 74 | 2 | 1 | 0 | 0 | | 0 | | recover/t_delete1 | 84 | 2 | 1 | 0 | 0 | | 0 | | recover/t_drop | 125 | 4 | 1 | 0 | 0 | | 0 | | recover/t_truncate | 120 | 8 | 1 | 0 | 0 | | 0 | | recover/t_xifenfei | 75 | 2 | 1 | 0 | 0 | | 0 | | recover/zx_users | 89 | 85 | 1 | 0 | 0 | | 0 | +-------------------------+-----+--------+------+--------+---------+--------------+-------+ 8 rows in set (0.00 sec) mysql> select * from SYS_INDEXES WHERE TABLE_ID=125; +----------+-----+---------+----------+------+-------+------------+ | TABLE_ID | ID | NAME | N_FIELDS | TYPE | SPACE | PAGE_NO | +----------+-----+---------+----------+------+-------+------------+ | 125 | 142 | PRIMARY | 1 | 3 | 0 | 4294967295 | +----------+-----+---------+----------+------+-------+------------+ 1 row in set (0.00 sec) 恢復被刪除表記錄 [root@web103 mysql_recovery]# ./c_parser -5f pages-ibdata1/FIL_PAGE_INDEX/0000000000000142.page -t dictionary/t_drop.sql >dumps/default/t_drop 2>2.sql [root@web103 mysql_recovery]# more dumps/default/t_drop -- Page id: 9860, Format: COMPACT, Records list: Valid, Expected records: (11 11) 00000099F9F2 80000026800110 t_drop "10235259536125650" "尊敬的用戶您好：您的手機驗證碼為474851如非本人操作，請撥打奧斯卡客服：400-620-7575。" "2010-01-01 00:00:00" 0 00000099F9F2 80000026800129 t_drop "10235353811295807" "尊敬的用戶您好：您的手機驗證碼為444632如非本人操作，請撥打奧斯卡客服：400-620-7575。" "2010-01-01 00:00:00" 0 00000099F9F2 80000026800142 t_drop "102354211240398235" "尊敬的用戶您好：您的手機驗證碼為478503如非本人操作，請撥打奧斯卡客服：400-620-7575。" "2010-01-01 00:00:00" 0 00000099F9F2 8000002680015C t_drop "102354554052884567" "尊敬的用戶您好：您的手機驗證碼為216825如非本人操作，請撥打奧斯卡客服：400-620-7575。" "2010-01-01 00:00:00" 0 00000099F9F2 80000026800176 t_drop "132213454294519126" "尊敬的用戶您好：您的手機驗證碼為854812如非本人操作，請撥打奧斯卡客服：400-620-7575。" "2010-01-01 00:00:00" 0 00000099F9F2 80000026800190 t_drop "82329022242584577" "尊敬的用戶您好：您的手機驗證碼為253127如非本人操作，請撥打奧斯卡客服：400-620-7575。" "2010-01-01 00:00:00" 0 00000099F9F2 800000268001A9 t_drop "82329022242584581" "尊敬的用戶您好：您的手機驗證碼為253127如非本人操作，請撥打奧斯卡客服：400-620-7575。" "2010-01-01 00:00:00" 0 00000099F9F2 800000268001C2 t_drop "8233400415607376" "尊敬的用戶您好：您的手機驗證碼為338470如非本人操作，請撥打奧斯卡客服：400-620-7575。" "2010-01-01 00:00:00" 0 00000099F9F2 800000268001DA t_drop "82334502212106951" "尊敬的用戶您好：您的手機驗證碼為916515如非本人操作，請撥打奧斯卡客服：400-620-7575。" "2010-01-01 00:00:00" 0 00000099F9F2 800000268001F3 t_drop "82339012756833423" "尊敬的用戶您好：您的手機驗證碼為396108如非本人操作，請撥打奧斯卡客服：400-620-7575。" "2010-01-01 00:00:00" 0 00000099F9F2 8000002680020C t_drop "8234322198577796" "尊敬的用戶您好：您的手機驗證碼為935297如非本人操作，請撥打奧斯卡客服：400-620-7575。" "2010-01-01 00:00:00" 0 -- Page id: 9860, Found records: 11, Lost records: NO, Leaf page: YES
恢復數據入庫
mysql> source dictionary/t_drop.sql Query OK, 0 rows affected (0.00 sec) mysql> source 2.sql Query OK, 0 rows affected (0.00 sec) Query OK, 11 rows affected (0.00 sec) Records: 11 Deleted: 0 Skipped: 0 Warnings: 0 mysql> checksum table t_drop; +-----------------+-----------+ | Table | Checksum | +-----------------+-----------+ | recover.t_drop | 920719058 | +-----------------+-----------+ 1 row in set (0.00 sec)
至此實現刪除數據完美恢復
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