Tuesday, August 24, 2010

How to Recover Corrupt MySQL Database When the Wtlicensemanager DLL File is Missing

MySQL is an open source database that is used as a means for enterprise solutions. It is widely used in various high-traffic Web applications such as Flickr, Nokia, Google, etc. One such application is Webtrends Analytics that keeps track of the user behavior on certain websites as well as on mobiles that run operating systems. However, sometimes the MySQL database do get corrupt because of various reasons such as abrupt shutdown while the database is open, virus infections, hardware malfunctioning, human errors, etc. In such cases, you should try to repair MySQL database using in-built methods. If you are unable to repair MySQL file, then you should use a third-party MySQL recovery software to recover MySQL database.

Consider a scenario wherein you have installed Webtrends Analytics in your organization to track and analyze the traffic coming in your official website. You are using MySQL as backend for the application. One day, there is a power outage and there is abrupt system shutdown. You open the system after when power is restored, but you are unable to unable to access the application. An error message is displayed, that is:
"Could not find file wtlicensemanager.dll."

Cause
The root cause for this erroneous situation is that the database table has corrupted because of abrupt system shutdown.

Resolution
To resolve this situation, you should check the state of the backup. If the backup is clean and update, you should straightaway restore the database from the backup. If not, then you should perform the following steps to repair MySQL database:

Log into the MySQL database as administrator.

Type the password, if asked to do so. To do this, type the command:
mysql-u Administrator-p

Repair the table with the following command:
Use wtmaster

REPAIR TABLE table_name:
Where, wtmaster is the name of the database.

Exit the database by typing exit and pressing the Enter key.

Try to access the database as it the error would have been resolved by now. However, if you still are getting the same error message then you should use a third-party repair mysql software to restore the corrupted database. Such MySQL recovery tools are able to restore the database without overwriting the original data.

Database Recovery for MySQL is a MySQL repair software that enables you to mysql repair database from all instances of corruption. It supports the recovery of various files such as .ibdata, .ibd, .frm, .myd, .myi, and .frm in the MyISAM and InnoDB engines. This mysql database repair tool is able to repair MySQL files and related objects such as tables, views, etc. It recovers the databases created in MySQL 4.x and 5.x versions. This tool is compatible with Windows 7, Vista, Server 2003, XP, and 2000.

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