Mysql Database Corrupted Post Upgrading To 5.0.27

Upgrading to a newer MySQL version is primarily done to take benefit of all the improved features of its newer versions

. This helps you to increase the database performance, add to safety, and allows accessing quick results. But it is always recommended that before you upgrade MySQL server, backup your database, otherwise, you may encounter serious database corruption. This is because after database corruption, one of the best and safest solution is to restore database from backup. But it becomes frustrating when you cannot restore from backup because the file is either corrupted or not updated enough to offer all the required data. To deal with such scenarios of backup incompetency, you need solutions like, MySQL Repair software.

As a symptom of corruption, you may observe the database records inaccessible and/or database unmountable. For further illustration, we'll now discuss a realistic problem when you upgrade to MySQL 5.0.27 running on Innodb engine. After the upgrade is done, when you try to access the database tables, you get the below error message:

#1033 - Incorrect information in file 'file_name'

Where, file_name refers to the name of affected file.

Cause

MySQL upgrade is either incomplete or has been improper. In such cases, MySQL databases usually behave as above.

Solution

To resolve the depicted issue, you should apply one of the following methods:

Try downgrading the database to the original version

Restore the corrupted database from last available backup

Repair MySQL Database using innodb_force_recovery=4 command

There are times, when none of the above solutions work for you. You cannot restore from the database backup because it is corrupted or it not updated enough to provide complete data restoration. To deal with such specific problems, use a third-party MySQL Repair software.

These utilities perform intensive database scanning to repair corrupted MySQL database and restore all the database components. With a user-friendly interface, these tools can be easily understood and implemented. Also, these software are safe to use with non-destructive algorithms.

MySQL is a comprehensive solution for repairing corrupted databases created in InnoDB and MyISAM database storage engines. Designed to work with Windows Vista, XP, 2003 and 2000 operating systems, this utility can Repair MySQL Database using a systematic approach. The tool supports recovery of databases created in MySQL 4.x and 5.x.

by: Naveen Kadian

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