SQL Server

Step-By-Step Approach to Repair Corrupted Page in SQL Server

SQL file corruption can occur at any time and database corruption will be the worst situation for any Database Administrator. However, the SQL database saves lots of crucial data on different pages and SQL corruption makes it inaccessible. Basically, pages are the basic unit of SQL database which is logically divided into pages numbered from 0 to n. But, when database pages are infected by corruption, the database administrator needs to restore each damaged page. Hence, in this post, we are going to tell you how to repair corrupted page in SQL Server.

What is the Reason behind SQL Database Page Corruption?

There are many causes due to which the SQL page can be corrupted. Some of them are discussed below:

• A hardware malfunction or failure can corrupt SQL database
• Internal issues in SQL server result corruption
• Sudden system shut-down when the database is opened
• If the server is infected by malware or virus then it can also cause corruption problems.
• During updating of the SQL server in the newer version also results in corruption.
• Power Supply related issues when the database is in the running state will also cause SQL database page-level corruption issues.

How to Repair Corrupted Page in SQL Server?

If you need to fix the SQL page corruption, then you can take the help of DBCC CHECKDB command. Before starting the process, it is advised to take a full backup of the SQL database to keep your data safe if anything goes wrong.

• Run DBCC CHECKDB Command

You can easily run the DBCC CHECKDB command without any repair clause. When you run the DBCC CHECKDB command, it will check both the logical and physical consistency in all the objects of the SQL Server database.
Then, follow the given below instructions to repair corrupted page in SQL Server:

1. At first, you need to check the difference between an original and the corrupted file by using any text comparison utility.
2. Now, run the DBCC CHECKDB command on only the corrupted or damaged file. This cmdlt executes the systematic data integrity check and then identifies the exact issues.
3. After that, you can run the DBCC PAGE command after switching on the trace flag 3604 (for this run DBCC TRACEON command). It will examine the infected page content.

DBCC TRACEON (3604)
DBCC PAGE ({ ‘dbname’ | dbid}, filenum, pagenum [, printopt={0|1|2|3}])
Here, filenum & pagenum denotes the page ids.
The Syntax of DBCC CHECKDB

Finding DBCC CHECKDB Method Challenging?

It is a very challenging task to run the DBCC CHECKDB command to repair the corrupted page in SQL Server. Because it requires depth knowledge and experience in SQL Server to execute the DBCC CHECKDB command. Also, if some pages of the SQL server database are highly damaged, then making changes in files may lead to further issues as well. Therefore, to avoid all such problems, it is suggested to use a professional tool to repair corrupted MDF or NDF files.

The best software advised by IT experts and perfectly capable to resolve the SQL page-level corruption is SQL Database Recovery tool. This application allows easily repairing the damaged page of SQL Server without facing any issue. It will repair both primary and secondary database files. It is compatible to work with all the versions of the SQL Database Server. Let’s have a look at the working procedure of this software that how it repairs the corrupted page in SQL.

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Step 1 – Run the software to repair corrupted page in SQL server on your system.

Step 2 – After that, click on the Open and Start Advance scan process.

Step 3 – Choose the server and click on the Ok button to get going with the process.

Step 4 – Choose whether you want to export data in the SQL database or in an already existing database.

Step 5 – Select With schema and data and Click Export.

Wrapping Up

If SQL corruption found in any page, it creates a problem for SQL Administrator. Hence, in this post, we have discussed the method to repair corrupted page in SQL Server by using the DBCC CHECKDB command. But, the manual method has some limitations. So, it is better to opt for a reliable solution like the SQL Recovery tool to repair SQL database corruption.