Thursday, March 11, 2010

MySQL Database Corruption Due to Damaged Table Handler


MySQL is a powerful and widely used Relational Database Management System (RDBMS), which provides multi-user access to different databases. This works on various operating system platforms including Microsoft Windows and Linux. The MySQL databases could involve several powerful feature such as triggers, stored procedures, cursors, query caching and views. In some situations, the reliable database gets damaged. In these cases, you are required to restore the database from backup to get your mission critical data back. In case if the backup is unavailable, it becomes essential to go for MySQL Recovery using proper tools.

In a practical scenario of MySQL database corruption, you might come across the below given error message when you attempt to access the database:

"Got error ### from table handler"

Where, ### refers to the MySQL error codes like 126, 127, 144, 145 etc.

After this behavior, the database could not be accessed and you come across data loss. At this point, you are required to find out the cause of this problem and go for MySQL Recovery by sorting it out.

Root of the issue

The above problem might take place because of the database corruption that might occur due to any of the below reasons:

Mysqld process has killed while writing data in the database. Hardware problems such as CPU and memory related. Improper system shutdown. Use of third party utilities for database operations. Software error in MyISAM or MySQL code. Resolution

In order to sort out this problem of MySQL Database, you need to go through below steps: Analyze the extent of database corruption. Use below command for the same: Check Table tablename If the database is damaged, you need to run the underwritten command for repairing it: Repair Table tablename

Scan whole database with the Check Table command again to verify if the database is free from corruption. If the problem persists, run mysqldump command to backup the database. Then create a new empty MySQL database and import the information from damaged database. After that, edit /admin/config.php point of newly created database. When all else fails, go for MySQL Database Recovery using third party tools.

These applications employ high-end scanning algorithms for efficient scanning of corrupted MySQL database and retrieve all of the data from it. They come equipped with interactive user interface and thus allows you to carry out easy and safe MySQL Repair.

Stellar Phoenix Database Recovery for MySQL is the absolute solution for all MySQL database corruption scenarios. It works well with MySQL 5.x and 4.x. This software recovers all MySQL database objects and compatible with Microsoft Windows Vista, XP, 2003 and 2000.

Article Source :- http://www.goarticles.com/cgi-bin/showa.cgi?C=1968809

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