A Request Tracker (RT) enables you to keep a record of all the operations performed in MySQL database. RT creates a session by using a MySQL database, a PERL (Practical Extraction and Report Language) based main engine and front-end web and mail interfaces. However, if RT is unable to store your transactions made into the MySQL component, chances are that your MySQL component is either corrupt or missing. Corruption of MySQL database component can occur due to MySQL database server malfunctioning, operating system failure, malicious software like virus and more. In such situations, you need to recover the MySQL database component by restoring it from the latest backup. But, if you have not maintained any backup or backup falls short of providing the required data, then you should repair your corrupted MySQL component to extract data from it. To do so, you need to use advanced MySQL Database Repair application.
Consider a practical scenario where you encounter the below error message when you attempt to save some changes in session_data table:
"RT couldn't store your session. This may mean that that the directory '/extra/requesttracker/current/var/session_data' isn't writable or a database table is missing or corrupt."
Cause:
The root cause behind occurrence of above error message is that the session_data table is either missing or corrupt.
Resolution:
To resolve the above error message and access the session_data table, you can follow these steps:
• Create a new directory and move the MySQL database to that directory. To do so, follow these steps:
mkdir /extra/var
mkdir /extra/var/lib
mv /var/lib/mysql /extra/var/lib/mysql
ln -sn /extra/var/lib/mysql /var/lib/mysql
• Next, you need to restart the MySQL database by using the below command:
service mysqld restart
If you find the table corruption even after moving the database files, then you need to follow these steps to repair the table:
• Check the mysql database for the table named "RT4" by using the below command:
mysqlcheck -u root -h localhost RT4 -p
• After checking, fix the mysql database table "RT4" by using this command:
mysqlcheck -r -u root -h localhost RT4 -p
• Finally, recheck the mysql repaired table "RT4" by using the following command:
mysqlcheck -u root -h localhost RT4 -p
However, if you encounter the same error message even after following the above steps, then you should use advanced MySQL Database Repair software. Such MySQL Repair tools use advanced scanning methods to repair and restore MySQL database objects. With easy-to-use interface and illustrated plus user-friendly documentation, these repair tools are easily to implement.
Author: David Poul
About the author:
Stellar Phoenix Database Recovery For MySQL is the foremost MySQL Repair tool. It supports both MySQL storage engines - MyISAM and InnoDB. It can restore and Repair MySQL components like tables, primary key(s) and relations. It is compatible with MySQL 5.x. It supports Windows Vista, XP, 2003 and 2000. It also supports Windows based recovery from MySQL database installed on Linux platform.
For More Information Visit: http://www.repair-mysql-database.com
Article source: Free Software Articles.
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