Repair Corrupt SQL Database Using DBCC CHECKDB Command

Summary: This article explains the best and simple methods to repair corrupt SQL Database files with issues. Here, we will discuss a manual solution to fixing SQL database file corruption or damage issues using the DBCC CHECKDB commands and a professional solution to repair Corrupt SQL Database using Aryson SQL Database Recovery Tool. Download Now   Purchase Now

Microsoft SQL Server is the most used and trusted relational database management system compared to other databases. It is used by multiple organizations and companies to store their crucial data information. Most users trust it more because it has several advanced features and functions that any database managing application does not provide.

However, there are a few cases where users face corruption issues in the SQL Server database due to viruses or malware infection, file system corruption, etc. As a result, these corruption or damage issues make your SQL Server Database inaccessible, so repairing or fixing the corruption issue is mandatory. For the same, the upcoming section is, as we are going to discuss the effective ways to repair corrupt SQL Database MDF files.

What are the Methods to Repair Corrupted SQL Database files?

If you are thinking about the methods to repair a corrupted SQL database, then please note we researched and found the two best solutions to fix SQL Server database corruption/damage issues. Follow the step-by-step procedure correctly to complete the repair process.

Method 1: Repair Corrupt SQL Database Using DBCC CHECKDB Command

This method suits you when your SQL Server Database corruption issues are small or less. Also, you need to ensure that you need to follow mentioned prerequisites to run this DBCC CHECKDB command:-

1. You have SQL Server Management Studio on your system.
2. A user must have Administrator privileges to run a repair process.

Step By Step Guide to Repair SQL Database DBCC CHECKDB

Step 1: Set SQL Database to Emergency Mode

Open SQL Server Management Studio and change the database status to EMERGENCY mode. As a result, it provides read-only access to the administrator.

ALTER DATABASE [DB_NAME] SET EMERGENCY

Step 2: Check If there are Any Corruption Errors

Now, run the DBCC CHECKDB command to check the corruption errors.

DBCC CHECKDB (DB_NAME)

If there is any corruption error in the database, then the command will recommend a suitable repair option for the same.

Step 3: Set SQL Database to SINGLE_USER Mode

First, you need to put the SQL database in the SINGLE_USER mode to start the repairing process of the SQL database.

To set it to SINGLE_USER mode, run the following command:

ALTER DATABASE DB_NAME SET SINGLE_USER

Step 4: Repair SQL Database

Now, you need to run the DBCC CHECKDB command either with the REPAIR_FAST command, REPAIR_REBUILD command, or the REPAIR_ALLOW_DATA_LOSS command.

The syntax of all commands is shared below:

REPAIR_FAST DBCC CHECKDB (N ‘DB_Name’, REPAIR_FAST) WITH ALL_ERRORMSGS, NO_INFOMSGS; GO

REPAIR_REBUILD DBCC CHECKDB (N ‘DB_NAME’, REPAIR_REBUILD) WITH ALL_ERRORMSGS, NO_INFOMSGS;

REPAIR_ALLOW_DATA_LOSS DBCC CHECKDB (N ’DB_NAME’, REPAIR_ALLOW_DATA_LOSS) WITH ALL_ERRORMSGS, NO_INFOMSGS; GO

Step 5: Set SQL Database to MULTI_USER Mode

As we above perform the steps based on SINGLE_USER mode, you need to switch to the MULTI_USER mode.

ALTER DATABASE DB_NAME SET MULTI_USER

Limitations of Manual Method

• The manual procedure to repair Corrupt SQL Database is very time-consuming and lengthy.
• These commands are unsuitable for a file that is severely corrupted or damaged.
• There are also high chances of data loss during the whole repairing process.
• Users must have the technical expertise to complete the process.
• The process requires the installation of SSMS and access to the admin account.

Method 2: Repair Corrupted SQL Database file using Bethe st DB Repair Tool

Aryson SQL Database Repair Tool is one of the finest and most efficient utilities to Repair Corrupted SQL Database MDF files. The software can recover all the database objects, like tables, stored procedures, defaults, rules, triggers, functions, etc., from database MDF files.

Here are the Steps to Repair a Corrupted SQL Database file

1. Download & Run MS SQL Database Recovery Software.
2. Click on the Browse option to select MDF File.
3. Choose the Recovery mode to scan database .mdf files.
4. Click on the OK button to start the scanning process.
5. Now click on the folder to preview the recovered database after scanning.
6. Click Save SQL Data, enter SQL Server account credentials, and check the database connectivity.
7. Click the OK button to successfully save the recovered SQL database data into the SQL Server.

Conclusion

This how-to guide describes all the possible reasons as well as the methods to repair corrupt SQL Database files. The explained solutions are easy to perform and help you to fix the SQL Server Database files corruption issues successfully. Well, it all depends upon you whether you want to choose the manual or professional solution to fix SQL Database file corruption.

Frequently Asked Questions

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