MyISAM tables (extensions .myi and .myd) in MySQL database form an integral part of storing data in the most effective manner. Corruption in these tables primarily occurs due to unexpected mysqld (MySQL Server) shutdown, operating system malfunctioning, usage of external program (like myisamchk) on a live table, software bugs and more. In most of these situations, you encounter an error message. Such error messages further makes the data saved in MyISAM table inaccessible. To completely recover the lost data from MyISAM table, you need to restore it from the latest backup. But, if you have not created any backup, then you need to repair the MyISAM table by using advanced MySQL database repair application.
Consider a scenario, where you are making certain modifications in the Marketing table. While doing so, you encounter a power outage and your system shuts down unexpectedly. After you switch on your system and try to open the table, the following error message gets displayed:
“Table is crashed and last repair failed”
The data saved in the Marketing table becomes inaccessible after the error occurrence.
Cause:
The reasons behind the above error message are:
· The table handler is unable to find Marketing.myi file.
· Unexpected end of the file due to power failure
· Some of the records in the Marketing.myi file have been crashed.
Resolution:
To resolve the above error message, you will need to repair Marketing.myi table by using these steps:
1. To check and analyze the corrupted table, use either of the two commands:
myisamchk Marketing.myi
Or
Check Table Marketing
2. To repair the corrupted table, use either of the two commands:
myisamchk -r -q Marketing (-r -q means “quick recovery mode”)
Or
Repair Table Marketing
But if the above repair commands fail to repair the Marketing table, you need to repair the table by using powerful MySQL Repair software. Such MySQL Database Repair applications incorporate advanced scanning algorithms to repair and restore the data stored in MyISAM tables. With user-friendly interface, this repair utility is easily understandable without sound technical skills. The repair tools also create a secure link with MySQL Server while repairing the corrupted MyISAM table.
Stellar Phoenix Database Recovery for MySQL is the most efficient MySQL repair software. This read only repair utility is compatible with both (MyISAM and InnoDB) MySQL database storage engines. It can completely restore and Repair MySQL components like tables, primary key(s), relations etc. It supports recovery from MySQL database installed on Windows (Vista, XP, 2003 and 2000) plus Linux on Windows platform.