How to fix InnoDB database corruption error?

Check the log files. If you find InnoDB database corruption, follow the below mentioned steps:

Take a backup or mysql directory, which can be used to restore if anything goes wrong.

# cd /var/lib/

# tar -cxvf mysql.tar.gz mysql

//Stop mysql service
# /etc/init.d/mysql stop

Add the following line into /etc/my.cnf to make mysql read only
innodb_force_recovery = 4

Restart mysqld - Mysql will start as we have started in read only mode

//Take backup of all databases using mysqldump
# mysqldump -A > alltable.sql

Drop all databases which are corrupted

Database can be deleted by deleting related directory in /var/lib/mysql/ or from mysql command-line or from phpmyadmin

#mysql -u root -p

# DROP ;

//We can check available database using this command
# show databases;

//Stop mysql service
# service mysql stop

//Remove innodb log and data file
# rm -rf /var/lib/mysql/ib*

Remove or comment out innodb_force_recovery in /etc/my.cnf

//Start mysql sevice in read-write mode
# service mysql start

//Restore database from backup that we have taken
# mysql -u root -p dbname < alldb.sql


After restoring DB restart mysql. We have fixed the issue, if MySQL is able to restart successfully. If still issue persists, you will need to restore database from older backup.


Related Articles

Fix :: Unable to login in phpMyadmin after revoking MySQL root user

Problem Statement I am not able to login into phpMyadmin after revoking root user. Solution...

How to Optimize MySQL Database Using phpMyAdmin?

Database always grows in size due to high traffic or a large amount of content. This will lead to...

Fix - PHPMyAdmin Error You should upgrade to MySQL 5.5.0 or later

Problem statement Recently we upgraded phpMyAdmin version from 4.0.10.12 to 4.5.3.1 in our...

How to Repair MDF Files in SQL Server Database?

Important Note :  Before proceed to following steps, we strongly advise taking your database...

How to connect MySQL using node js?

This article will show you how to connect to a MySQL database using the Node.js. Note: Node.js...

  • 0 Users Found This Useful

Was this answer helpful?