Quick Ways to Repair MDF Files in SQL Server – Let’s Know How

Summary:- MDF file is formerly a Master Database file and is used by SQL Servers to store all types of data. It can store your SQL data in a single file, like form columns, rows, fields, indexes, views, and tables. However, these days, it has been found that users reported different errors they faced while accessing the SQL Server, like SQL Server not loading and MDF files not being more accessible. The main reasons behind all these issues are either your SQL Server being infected by a virus, failure of the operating system, or corruption & damage to the MDF file. Hence, in this blog, we will be going to discuss several reasons and the possible solutions to repair MDF files in SQL Server. For more accuracy and data privacy, you can also go for the Aryson SQL Database Recovery Software, which is competent enough to recover all the data from the MDF file.

Reasons Behind SQL MDF File Corruption

There are several reasons behind the need to repair corrupt SQL MDF files. Some of the common reasons are listed below:

• An issue occurs in the storage media where all MDF files are saved.
• If your data contains MDF files in a compressed folder for many days, it may be possible that your MDF file gets corrupted or damaged.
• If any not-required updates or changes are done in the SQL Server account, then it may, as a result, stop your work.
• It may be possible that the users will remove some data accidentally or unintentionally.
• If the file header is missing, it may be possible that your file will get damaged earlier.
• Network failure while using the SQL Server.
• Hard Disk failure, unexpected shutdown of computer and power failure, and virus attacks are other common causes.

As we have read, above mentioned all the points more or less are responsible for the MDF File corruption. Thus, let’s look at how you can easily repair MDF files in SQL Server.

Best Ways to Repair MDF Files in SQL Server

Multiple methods are available for users to repair a corrupt or damaged MDF file. Here, we will mention the two selective and tested methods to recover data from corrupt MDF files in SQL Server.

Method 1: Repair MDF Files in SQL Server Using DBCC CHECKDB Command

Follow the steps below to recover corrupt MDF files in SQL Server using the DBCC command.

• First, you need to run DBCC CHECKDB Command
  DBCC CHECKDB (Name of the corrupt Database)
• Here, it will also offer the option of no_infomsgs and infomsgs to use with the DBCC CHECKDB.
• Once you do these, you need to check the index ID.
• Case 1: If your index ID is greater than 1, drop it, and you must create the new one again.
• Case 2: If the index ID is between 0 and 1, you need to run the DBCC CHECKDB again with the help of required repair options such as repair_rebuild, repair_fast, or repair_allow_data_loss.
  DBCC CHECK (name_of_corrupt_database, repair_fast)
  DBCC CHECK (name_of_corrupt_database, repair_rebuild)
  DBCC CHECK (name_of_corrupt_database, repair_allow_data_loss)
• To verify that your corrupted MDF file is repaired successfully, try to execute the DBCC CHECKDB command again and check that the messages are displayed as 0 and with no errors.

The above method helps you to restore or repair MDF files in SQL Server, but not all time, as this method is a bit tricky for users who are from a non-technical background and who have less knowledge of SQL databases. The process is also time-consuming and lengthy. Therefore, we prefer a professional tool to repair the MDF file.

Method 2: Repair MDF Files Using the Aryson SQL Database Recovery

The software is an efficient and safe utility to repair MDF files of the SQL Server without losing any data. It allows users to browse the MDF files from the system, and the software successfully recovers Triggers, Functions, Indexes, Tables, Rules, Views, and Stored Procedures from them.

Conclusion

Through this blog, we learned the best two methods to repair MDF files, and in both, one is manual and another is a professional method to repair MDF files in SQL Server. So, it is better to use both of them and go for the best one according to your requirements. However, we suggest you use the SQL Server Recovery Tool to repair the SQL MDF file easily.

About The Author:

Pradyum Shashank

I am a technical content writer at Aryson Technologies with an experience of 2 year specializing in writing about databases, data recovery, file management, e-mail recovery & migration solutions. Also, I am proficient in working in a challenging environment using all my skills and want to serve the reputed growth of the industry in the development field.

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