Recovering The Mysql Database After Improper Version Upgrade

Upgrading to a newer version of MySQL is a desirable step to make use of all the advanced features of the latest version

. This way, you can use the improved functionality such as faster database performance, more secure database, quicker turnaround time, etc. However, it is strongly recommended that you always take the backup of the database than to repent later in case of data loss or inaccessibility. But having said that, sometimes even after creating a backup of the database you are unable to restore the database from the backup. It happens because of corruption of the backup file because of various reasons such as virus infection, interruptions in taking the backup, power outages, etc. In such cases, you should take appropriate corrective measures to sort the issue. However, if you are unable to do so then you should use a third-party MySQL recovery software to repair MySQL database.

Consider a scenario wherein you have upgraded your existing MySQL version to MySQL 5.0.27 on an InnoDB engine. Once the upgrade is done, you try to access the database table but are unable to do so. An error message is displayed, that is:

"#1033 - Incorrect information in file "

Where refers to the name of the accessed file.

Cause

The most possible cause of this error message is that the MySQL upgrade is either incomplete or improper. Because of this, the database is behaving in this way.

Resolution

To resolve this issue, you should use any of the following methods:

Try downgrading the database to its previous version.

Restore the corrupted database from its updated and clean backup.

Repair the MySQL database using the innodb_force_recovery=4 command.

However, if you are not able to address the issue even after using the aforementioned methods then you should use a third-party mysql database repair software to recover MySQL database. Such read-only tools are able to repair the corrupted MySQL tables without overwriting the original data. These tools use fast yet sophisticated scanning algorithms to repair the corrupted database.

Database Recovery for MySQL is a mysql repair software that enables you to repair MySQL database. It supports InnoDB and MyISAM MySQL database engines. This tool is capable of repairing various MySQL database components such as tables, views, etc. It is capable of repairing the files created in MySQL 4.x or 5.x versions such as FRM, MYD, MYDATA, etc. This MySQL repair tool is compatible with Windows 7, Vista, Server 2003, XP, and 2000.

by: Advika Singh

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