subject: Resolving your Database May Be Corrupt Error Message [print this page] Records stored in your MySQL InnoDB database tables becomes inaccessible after it gets corrupted or damaged. In most cases, an error message pops up that stops the database to mount (making the database offline) and informs the user about cause of its corruption. To verify that the database is unmountable due to corruption of InnoDB tables, you will need to review the MySQL log file. Once it is confirmed that the error message is caused due to InnoDB table corruption, the best way to access your database is by restoration of data from an updated backup. However if the backup is not available or backup falls short to restore the required data, then you will need to use advanced mysql database repair application.
Consider a practical scenario, where your InnoDB table get corrupted and you are not able to mount your database. Furthermore, when you check the log file, you view the below error messages:
InnoDB: Error: page 306 log sequence number 0 162040719
InnoDB: is in the future! Current system log sequence number 0 19295526.
InnoDB: Your database may be corrupt or you may have copied the InnoDB
InnoDB: tablespace but not the InnoDB log files...
These list of error messages can easily identify that the InnoDB tables are corrupted or damaged. For successful repair of these tables, you will need to follow the below steps:
Add the below line to /etc/my.cnf configuration file.
[mysqld] innodb_force_recovery = 4
Restart MySQL. The database will mount with innodb_force_recovery, ignoring all UPDATEs and INSERTs
Dump all your tables.
Shutdown your database and erase the data directory.
Run mysql_install_db to create default MySQL tables.
Erase the innodb_force_recovery from /etc/my.cnf configuration file.
Restart your database.
Restore data from an updated backup.
The above steps ensure complete success in case you have maintained an updated backup. But, if database backup is not created or maintained, then you will need to use powerful MySQL Database Repair software. Such read-only MySQL Repair tools use high-end scanning methods to perform an orderly scan of your corrupted database and recover all database components.
Stellar Phoenix Database Recovery For MySQL is an advance tool that repairs damaged MySQL database tables created in MySQL database storage engines MyISAM and InnoDB. Supported by Windows Vista, XP, 2003 and 2000, the read only mysql repair software ensures risk-free recovery of almost all MySQL components, like tables, primary key(s), and relations.
