Searching the ways to fix SQL server database corruption problem? Find out the best possible ways to deal with SQL server MDF file corruption problem easily.

How to Fix SQL Server Database Corruption 

Microsoft SQL Server is a powerful relational database management system that allows you to manage large sets of data. However, you may face some issues or corruption and once the database becomes corrupted, it is important to fix the problem immediately or risk losing all data in the database.

SQL database corruption problems can be difficult to troubleshoot and fix, but they don't have to be! This blog is dedicated to helping you to fix SQL server database corruption issues and get your data back up and running.

Additional Tips : Click here to know how to check SQL Server database corruption problem.

SQL Database Corruption Causes

 Database corruption most often occurs in MDF files as these are the data files holding the most crucial data. Corruption can result from various possible causes such as:

  • Hardware failure
  • Bugs in SQL database
  • Sudden power failure and unexpected system shutdown
  • Virus attack
  • Storing SQL database in compressed folders

When a database is corrupted, files can become inaccessible to users. If you try to access them, you might get several errors like,

  • MSG 823/824/825 error in SQL Server
  • Error 9004 in SQL Server
  • Metadata Corruption Error
  • SQL Server Page Level Corruption
  • SQL Server Table Corruption                                                 

The SQL Server database faces these common errors. To overcome these errors, make sure to have a proper backup to restore the database.

Methods to Fix SQL server database corruption Problem

Let’s start with a manual method which shows how to fix database corruption in the SQL server.

Method 1: Repair with SQL Server Management Studio

Even though repairing a database through the MS SQL Server Management Studio will fix it for you, don't rely on this as your go-to option. If the corruption seems mild, there could be conflicts and unintended consequences from using these commands such as data loss.

You may need an advanced type of SQL recovery software which we will explore in the next method.

Hence we will go through the basics of SQL Server Management Studio so that you can just fix the corrupted database.

To proceed, launch the Database in emergency mode to get access to admin-only. The steps are in the following order,

  • Start → All Programs → MS SQL Server → SQL Server Management Studio.
  • Once the database is connected click on New Query.
  • Next, insert the below-mentioned command in the New Query. 

EXEC sp_resetstatus [YourDatabase];

ALTER DATABASE [YourDatabase] SET EMERGENCY

DBCC checkdb( [YourDatabase])

ALTER DATABASE [YourDatabase] SET SINGLE_USER WITH ROLLBACK IMMEDIATE

DBCC CheckDB ([YourDatabase], REPATR_ALLOW_DATA_LOSS)

ALTER DATABASE [YourDatabase] SET MULTI_USER

  • Click on Execute.

Remember, this method won’t work most of the time as this commands may lead to data loss. Hence, SQL database recovery software is the ultimate solution.

Method 2: Using Stellar Repair for MS SQL

If you're looking for an easy way to fix corrupted MS SQL databases,

 SQL Recovery Software is your answer. This high-powered tool was specifically designed to recover and repair MS SQL Databases from damage or corruption.

It can even restore the lost or destroyed contents of your database - including tables, missing records, indexing information, triggers, stored procedures, keys, rules...anything!

The software has many terrific features that will help to save your day. These include,

  • Repairs corrupt MDF and NDF database files
  • Recovers deleted records from SQL database
  • Uses parallel processing to process and store multiple tables at once
  • Supports SQL server running on Windows or Linux platform
  • Multiple saving options

Just a matter of a few steps and you are good to go with Stellar Repair for MS SQL Database recovery tool.

1.First, choose the MDF file for your SQL database from the Stellar SQL repair tool's main interface screen. 


2.Next, click on Repair to start scanning and repairing the selected database file.


 
3.Choose between Standard Scan or Advanced Scan to initiate the scanning process.


 
4.The software will display a progress bar for each part of the repair process it completes.


 
5.Once completed, click OK.


 
6.Open up the preview of the files you are attempting to repair and hit Save on the File tab.


 
7.Choose between New Database, Live Database, or Other Formats when prompted, and then click Next.


 
8.Provide a name for the new database, choose where you would like to save it on your system, and then hit Next again.


 
9.Enter Fast Saving Mode to quickly save the repaired data. Select Standard Saving if you want both saved data and indexes saved at once. Hit Save.


10.A list of tables will be shown displaying the saving status as Completed, Processing, Pending, or Aborted.


 
11.Save Complete message box is displayed when all data has been saved successfully.


Final Thoughts

This write-up has all the information you need to know on how to fix database corruption in the SQL server. Manual and automated methods are discussed so that everyone can find one that best fits their needs. It's important to remember, though, that manual solutions do involve a lot of brainstorming and make it difficult for professionals who need to access these databases regularly.

For this reason, we always recommend an automated solution like Stellar Repair for MS SQL as it simplifies the entire process and speeds up recovery time significantly.

FAQ

Q. How to identify or check SQL database corruption?
A. To check the corrupt files, execute the following command,

SELECT * From msdb.dbo.suspect pages

If there is no error in the database, nothing will be displayed when you run the query. No corrupt entry will be found.

Q. Can a corrupted SQL database be repaired?
A. Yes. SQL server database corruption can be repaired using a manual method like SQL Server Management Studio.
For more reliability and a smooth process, try an automated solution like Stellar Repair for MS SQL.

Q. Can I fix corruption in SQL databases by using the DBCC CHECKDB REPAIR_ALLOW_DATA_LOSS command?
A. Yes. However, it is not always the best solution to restore a corrupted SQL database due to potential data loss. Executing this command may lead to data loss.