How to Repair SQL Database DBCC CHECKDB?

Throughout this article, we will discuss how to repair SQL database DBCC CHECKDB command. We will share how to execute the repair method using DBCC CHECKDB. Along with that, we wll share an expert-suggested alternative to repair corrupted SQL database as well. So, let us get started with the vlog and see how to tackle the issue.

SQL database, as we know, is a relational database collection of highly structured tables, where each column reflects a specific information field and each row defines a specific identity. Unfortunately, oftentimes due to various reasons, SQL database tend to get corrupted, and thus, users need to repair SQL database using command or other solutions.

Therefore, in this article, we will discuss how you can repair SQL database using DBCC CHECKDB commands for free of cost. Along with that, we will also see an expert-recommended alternative to repair SQL database DBCC CHECKDB.

Steps to Repair SQL Database With DBCC CHECKDB

First and foremost, open SSMS and proceed ot follow the instructions givn below to repair corrupt SQL database DBCC CHECKDB command.

Note: In these shared steps, we will use “testDB” as the Databse Name. Feel free to replace “testDB” with the name of your database.

Step 1: Set Database to Emergency Mode

The first step of this process requires changing the database status to EMERGENCY mode. To do that, here is the query you need to run:

ALTER DATABASE [testDB] SET EMERGENCY

Step 2: Analyze Corruption Errors to Repair SQL Database DBCC CHECKDB

The next step is to check for corruption errors. Once the administrator accesses the database, execute this following command to analyze and check the corruption errors in the database:

DBCC CHECKDB (testDB)

If the DBCC CHECKDB command detects any errors in the analuyzed database, it will recommend appropriate repair options to fix the issue.

Step 3: Set Database to Emergency Mode

Next, in the third step, before you use the DBCC CHECKDB repair options, put the corrupt SQL database in SINGLE_USER mode to ensure other users don’t modify the data during the repair process. Follow the given techniques to set your SQL database in SINGLE_USER mode:

Method 1: Using Graphical User Interface (GUI)

The first solution is to set SQL database in SINGLE_USER mode using the graphical user interface of SSMS [SQL Server Management Studio]. To proceed, open SSMS and follow the instructions given below.

• Right-click on the “Database” you wish to repair and click on “Properties”.
• Next, click on “Optins” in the “Database Property” window.
• Afterward, under the “State” tab, click the “Restrict Access” dropdown box. Then, select the “SINGLE_USER” option, and at last, click on “OK”.

Method 2: Using the T-SQL Command

The next technique to set your SQL database in SINGLE_USER mode is by running the following T-SQL query in SQL Server Management Studio [SSMS].

ALTER DATABASE testDB SET SINGLE_USER

Step 4: Set Database to Emergency Mode

Once you have set your SQL database mode to SINGLE_USER, it is time to run DBCC CHECKDB with the REPAIR_ALLOW_DATA_LOSS repair option to repair your corrupted SQL Server database.

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

Note: As we see, the REPAIR_ALLOW_DATA_LOSS repair option helps in repairing all the reported errors in user’s SQL database, however, it is not the best option for repairing corrupted databases as it causes data loss. Even Microsoft itself recommends choosing the REPAIR_ALLOW_DATA_LOSS option as a last resort when you cannot restore your database from backup. In case, you do not have any backup and cannot risk losing your crucial data, proceed to the following segment and check out the alternative solution suggested by experts. But before that, let’s move on to the next and last step of the manual procedure.

Step 5: Set Database to Emergency Mode

After you repair your database successfully, set your database back to MULTI_USER mode by executing the following command:

ALTER DATABASE testDB SET MULTI_USER

What To Do When DBCC CHECKDB to Repair SQL Database Fails?

As you witnessed, running the manual DBCC CHECKDB REPAIR_ALLOW_DATA_LOSS command is free of cost, however, requires deleting database objects which results in data loss. In addition to that, the DBCC CHECKDB might fail and result in an error while restoring severely corrupted databases. Therefore, technical professionals recommend users go for a professional utility such as this expert-favorite SQL Recovery Tool. The astonishing utility is loaded with extravagant features that make it one of a kind. This tool is specially designed to provide users with a secure and smooth sailing database repair process. Furthermore, we have shared some of the prime astonishing features of this utility in the following segment as well.

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Fascinating Features of the Expert Solution

• The expert tool supports repairing the database of all SQL Server versions, whether the latest or the older.
• The utility highlights and displays the recovered deleted records in red color to distinguish them from the rest of the previewed data.
• It provides two different modes for scanning users’ uploaded database in a thorough manner. Where the Quick Scan mode helps in scanning healthy SQL data files, the Advanced Scan mode helps in thoroughly scanning severely corrupted files.

In summation, the utility is deemed an expert favorite due to the high-reliability factor it provides to its users. And that is why, numerous technical experts urge users go for this professional utility to ensure a secure repair process.

So There You Have It

In this article, we discussed how to repair SQL Database DBCC CHECKDB, a manual method free of cost. We know how a corrupt database can lead to unnecessary downtime or even atrocities like data loss. In this case, even the free DBCC CHECKDB command/s method requires users to lose some database objects in order to restore and repair corrupt databases. Hence, technical professionals suggest users go for the above-mentioned expert utility to ensure a reliable and hassle-free process.

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