How to Recover Data from a Corrupt MDF File?

Published by Jacob Martin on January 6, 2014

SQL database provides a relational database management system (RDBMS) that is based on SQL Server technology. It helps to deploy relational database solution that is major concern of any SQL Server DBA. It is highly helpful for professional work, that helps for manage the official work, it helps to keep records of the employees, and also helps to manage the school works like keeping records of students. But sometimes unfortunately due to some critical situations when SQL Server files get damaged or may get corrupted that this marks the indication of data loss. Thus this can make situation panic. Users can face many problems when they encounter damage or corruption problems. As the MDF files helps to hold the primary database files.

Such a situation arisen with me when by mistake I deleted the database from the SQL Server. Due to which the MDF and the LDF files of the database got removed from the system. It was showing corruption messages, saying that your files are deleted etc. It became the highly annoying situation for me. As me important records was in tremendous danger.

Causes

The reasons for the corruption of SQL MDF can be anything whether it can be any virus attack or improper shutdown of the system, database file header corruption or it can be any network problem. There is range of reasons that leads to the corruption of SQL Server Database files (MDF) corruption. Some of them are:

• Usually in case of power failure that can lead to irregular termination of server computer.
• Problems or damage in Server, hard drive, disk controller, cache, main memory or Raid Controller.
• Users database that encounter incorrect string to multi-client database.
• While accessing and copying the files when still the server is running.
• Size restriction extension of the database file.
• When the database is working there is no free disk space.

You should not worry because you can fix MDF file corruption by the help of inbuilt tool that is DBCC CHECHDB command. But this repair tool helps to fix only few errors not the whole types of error. This inbuilt repair tool fails to repair heavy errors. So for such cases SQL MDF file repair tool can be highly efficient tool that is specially designed to deal with SQL Server database (MDF files) corruption. It can restore even the large sized SQL database files, records, tables. It helps to rescue MDF files from any hazardous situations. This repair tool helps to recover triggers, tables, indexes, primary keys, foreign keys, unique keys, stored procedures, default values, rules, predefined defaults, user data types (default, null, rule) from corrupt SQL database files easily.

Solution

SQL MDF Repair Tool is one of the powerful software that helps top perform SQL Repair and Rescue process easily and even provides you with several facilities. It helps to perform the recovery process speedily and completely. It even helps the SQL users to repair and recover their damaged and lost records or partially damaged records and saves them in separate script files. At the time of performing this recovery process it even does not harm the data and above all recovers all your important information accurately.

Steps to Recover Data from a Corrupt MDF File

Step 1: Stop the running MS SQL server. Perform the repair task on the copy of the corrupt database, click on the ‘OK’ button to continue.

Step 2: Click on the ‘Select database’ button and select the path of corrupt MDF file. You can also search your corrupt database file by using ‘Look in’ and ‘File Type’ button. click on the ‘Scan file‘ button to start the repairing process.

Step 3: The recoverable objects of database are listed in a tree view on the left side of the window. You can see the preview by clicking on the object.

Step 4: You can also search for a particular object by using ‘Find item’ option. Write the object name or a part of the object name in the given text box, check on ‘Match case‘ or ‘Match whole word‘ and then click find next button.

Step 5: Click on the ‘Start Repair’ icon. A dialog box will appear fill the SQL server instance name. To save the repaired file in the desired location click on the brows button and give the path, else the repaired file will be saved in the ‘Default SQL Location’. Click on the ‘OK’ button.

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