Monday, February 22, 2010

How To Recover Corrupted/Crashed InnoDB Database?

Are you a frequent user of the transaction database characteristic in MySQL? If 'Yes', then you must be quite familiar with the InnoDB storage engine of MySQL. InnoDB offers transaction safe database, along with the BDB, within MySQL environment. However, in some cases, this database engine may get damaged due a number of reasons, and leads to critical data loss situations. At this point, you are required to go for MySQL Repair solutions to get your precious data recovered.

A MySQL user or database administrator would never want bad things to happen, but they do. Sometimes, internal system malfunction, virus infection, human errors, power outages, improper system shutdown, or even operating system malfunction make your MySQL database corrupted or crashed. At this point, it becomes essential to identify the actual cause of the database corruption and perform MySQL Recovery by sorting it out.

How to Find Out Damaged MySQL Database:

All of a sudden, you may encounter query errors on some or all pages of your website. If your MySQL is configured well, you are required to be pretty cautious when you come across the below error message:

ERROR 2006 (HY000): MySQL server has gone away

If the above error occurs repeatedly, further investigation is required. First investigation point for this is the application log. If your installation is standard, you can find the MySQL log file at /var/log/mysqld.log.

The error is related to the below errors. You can run a simple command “OPTIMIZE TABLE tablename” and verify if you experience:

ERROR 1030 (HY000): Got error -1 from storage engine (It means that data has not been recovered from the previous database corruption or crash).
ERROR 1030 (HY000): Got error 28 from storage engine (It means the storage device is full).

If you encounter the first error message, you need to restore your database from the most recent backup. In case the backup is not available, you have to Repair MySQL Database using reliable and effective tools.

The Repair MySQL Database applications ensure complete recovery in all cases of MySQL database corruption as they perform in-depth scan of entire database through high-end scanning techniques. They come equipped with simple and self-descriptive graphical user interface to enable easy recovery, without demanding sound and prior technical skills. These software preserve the integrity of database as they have read-only and non-destructive conduct.

MySQL is an excellent solution to repair and restore damaged MySQL database in all cases. It supports both InnoDB and MyISAM storage engines of MySQL. The software works well with MySQL 5.x and 4.x.

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