Wednesday, April 21, 2010

Repair MySQL table with damaged Index

MySQL database table can be corrupted due to to various reasons, one of them being the damage of Index. A table index, usually created at the time of creation of table, is a set of pointers that point towards particular rows in a table. A table Index in MySQL is primarily used to improve the performance of the database by increasing the speed of your MySQL queries. MySQL table, once corrupted due to any reason, makes the records saved in it inaccessible. In such cases, the records can be easily accessed by restoration from an updated backup. However, if the backup does not restore the required table records, then it is of no use. A better way to overcome such table corruption scenarios is by repairing the table by using an advanced Repair MySQL Database application.

To illustrate the above scenario, picture a case where you encounter the below error message when you try to access your MySQL table:

“[Incorrect file format 'TABLENAME']”

After the above table error message pops up, the data saved in your MySQL table becomes inaccessible.

Cause:

The fundamental reason for the occurrence of the above error message is corruption of your MySQL table due to damage of its index.

Resolution:

The above table error message can be resolved within phpMyAdmin. To do so, you will need to follow the below steps:

1.Login into phpMyAdmin by entering your User name and Password.
2.Select the corrupted MySQL database table.
3.Enter the below code for the database table:
repair table employee use_frm;

The above steps resolve the above problem in most cases. However, if the above steps fail, then you will need to use an advanced MySQL Database Repair application to repair your table.

A third-party MySQL Repair utility is a complete solution to repair corrupt MySQL table, irrespective of their reason of damage. The repair utility uses powerful repairing methods – developed by database repair experts – to repair almost all MySQL database components. It can be downloaded from the Internet and allows even a novice user to perform the repair.

MySQL is a powerful application used by most of the MySQL database users to repair their database components. With repair of both MyISAM or InnoDB tables, the software is compatible with MySQL 5.x and 4.x. The MySQL Repair utility supports Windows 7, Vista, XP, 2003 and 2000.

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