Adom (Aryson Technologies)

Aug 28, 2021 3 Minute Read

Adom Click

Adom (Aryson Technologies)Technical Specialist at Aryson Technologies

Main Areas of Contribution:

This article presents information regarding the SQL Server database MDF file and how corruption might render the database inaccessible. It describes the most typical causes of MDF file corruption and how to fix the file manually. It also describes how to fix a corrupt MDF file using a third-party SQL Database Recovery Tool.

MS SQL Server is now one of the most widely used relational databases. It features a sophisticated internal structure and a high level of dependability. As a result, most businesses use the SQL Server database to save all critical company data. However, in some cases, such as virus infection, operating system failure, damaged file system, and so on, the SQL database becomes corrupt, and all data stored in it becomes unavailable. Repairing .mdf files in SQL Server from a corrupted condition is a difficult operation.

A user can use the manual technique to repair a corrupted MDF file in a SQL database; however, this is not a reliable method because there is no guarantee of data recovery when utilizing the manual method. Third-party software like Aryson SQL Database Recovery, on the other hand, claims to repair .mdf files flawlessly.

As a result, we'll go over the best ways to fix a faulty SQL database in this piece. However, before proceeding, it is necessary to comprehend the causes of SQL database corruption.

**Causes of MDF file corruption**

SQL Database MDF file corruption can be caused by many factors, including:

- Third-party drivers or a firmware problem in the layer beneath the SQL server are to blame for the platform issue.
- Problems with discs, controllers, CPUs, or memory modules are examples of hardware faults.
- SQL Server relies on the Disk Subsystem for data storage and retrieval. As a result, any problem with disc controllers, communication lines, or the disc Subsystem can result in database corruption.
- Microsoft's products contain flaws.
- Inadequate system shutdown as a result of a power failure or a forceful restart.
- Infection of one or more server volumes with a virus.

2 Steps total

Step 1: Methods to Repair MDF Files for Free

A corrupted MDF file can be repaired for free in the following ways:

- The DBCC CHECKDB command is used to check the database (built-in).

- Using a recent backup to restore an MDF file.

Note: While both methods can be utilized in most instances, they do have limitations:

- The "DBCC CHECKDB" command is frequently unable to repair severe MDF file corruption.

- Because corruption occurs without warning, you may not have a recent backup on hand when your SQL database is damaged.

Step 2: Repair Damaged SQL Database From MDF File

Aryson [SQL Database Recovery](https://www.arysontechnologies.com/sql-database-recovery.html) is a capable application that repairs even the most serious corruptions in MDF and NDF files and recovers inaccessible objects from them. During the process, the product does an advanced non-destructive repair to maintain database integrity. In addition, it comes with an amazing feature set that will help you fix MDF files smoothly and precisely.

Steps to Repair MDF File in MS SQL Server Database

1. Start the Aryson MS SQL Database Recovery tool. Click on the Open button. Select the corrupt MDF file by clicking the Browse button.
2. Choose any corrupt MDF file from the list and press the Open button.
3. Now, choose recovery mode and press the OK button.
4. The scanning process for the specified file is finished. Select the OK button.
5. Expand the folders in the left pane. To see a preview of any item, double-click it in the "Preview Pane."
6. Now, on the left-hand side window, pick the objects you want to save. Save the file by clicking the Save button.
7. Choose the location where you wish to save the recovered data. Select the OK button.
8. The procedure of saving has been completed. Select the OK button.
9. Close the software application by clicking the Close button. Select the Yes option.

Database files are extremely significant for all users since they contain a wealth of vital information. In addition, any SQL database corruption might cause problems for users. As a result, to overcome all of these challenges, we have explored both manual and professional SQL database file repair options.