| Improper or unexpected MySQL Sever shutdown is | | | | stored in InnoDB database becomes inaccessible. |
| one of the primary reasons for InnoDB database | | | | Resolution |
| corruption. Two main reasons for improper server | | | | To resolve the above error message and to access |
| shutdown could be power outage and human errors. | | | | the data stored in tables, you will need to follow the |
| A major hazard that a database user encounters | | | | below steps: |
| after InnoDB database corruption is inaccessibility of | | | | 1.Add “innodb_force_recovery=4” to etc/my.cnf |
| database records. The user is not left with any choice, | | | | configuration file. |
| but to restore the database records from an updated | | | | 2.Restart MySQL and dump all the tables. |
| and complete backup. However, the database backup | | | | 3.Shutdown your database, erase the data directory, |
| fails to restore the desired records in case it is | | | | and mysql_install_db to create new MySQL tables. |
| corrupted, damaged, or not updated. In such situations, | | | | 4.Remove “innodb_force_recovery=4” from |
| the user need to opt for an advanced mysql database | | | | etc/my.cnf configuration file. |
| repair application that can repair its corrupt database | | | | 5.Restart your database and restore everything from |
| and restore all the records on its desired location. | | | | a backup. |
| Below is the error message that pops up when your | | | | The above command assures systematic repair of |
| InnoDB database gets corrupted after MySQL Server | | | | database after almost all logical corruption scenarios. |
| crash: | | | | However, the resolution fails to resolve the issue when |
| “InnoDB: Database page corruption on disk or a | | | | you have not maintained any backup. To repair your |
| failed | | | | database in case of no backup availability, you will |
| InnoDB: file read of page 1294396. | | | | need to opt for powerful mysql database recovery |
| InnoDB: You may have to recover from a backup. | | | | application. |
| 031030 5:33:50 InnoDB: Page dump in ascii and hex | | | | Such repair applications scan and repair your database |
| (16384 bytes):len 16384; hex 000000000013c03c0000 | | | | to the maximum possible level. These MySQL Repair |
| ...... | | | | tools are read-only in nature and perform repair |
| .... | | | | without making any changes in original data. Built with |
| ....” | | | | interactive user-interface, these tools provide clear |
| After the above error message appears, the data | | | | understanding of the repair process. |