Database or any database object corruption in SQL Server is a nightmare for the database administrators. When we talk about how to repair corrupted page in SQL Server, it becomes challenging for the users as the page-level corruption in SQL Server occurs on a single data page in the SQL database.
With this guide, we will try to understand the causes and the solutions to repair the corruption in much more efficient ways. So, without any further delay, let’s discuss what this corruption is and how it affects the database and users’ day-to-day tasks.
Understanding Page-Level Corruption
When we talk about the page-level corruption in SQL Server, it simply defines when a single page of the database becomes inaccessible or unreadable due to any damage or corruption. Let’s understand the signs that help to detect corruption and then work on the solution for how to repair corrupted page in SQL Server. There can be several reasons leading to this corruption, and it can be detected in the following ways:
- If the PAGE ID doesn’t match the desired value.
- When the page has damaged structures or data.
- If the page is unreadable by the processors.
All these reasons signify that there is something wrong with the page in the SQL database. When it comes to understanding what causes these issues, we will now take a look at the possible factors that lead to this corruption.
What Causes Page-Level Corruption in SQL Server?
There are numerous reasons that can lead to SQL Server page corruption. We will discuss a few of them here and then try to find the best ways to resolve the how to repair corrupted page in SQL Server issue. Here are the causes for the corruption in SQL database pages.
Due to Hardware Failures
With the hardware damages in the SQL Servers, like bad sectors in the storage disks, or if there are any faulty RAMs in the system. It can create many more challenges in the SQL Server, one of them being page-level corruption in the database.
Abrupt Power Outages
When the database encounters any sudden power outage in the SQL Server, it might lead to page-level corruption. The sudden shutdown of the server can restrict the page from being written, leading to an incomplete or broken state.
Due to a Virus or Malware
One of the rare reasons for SQL Server page corruption can be a virus or malware attack. The viruses can affect the database pages and can further impact the workflow of the users.
Possible Human Errors
There are also chances that the corruption might have been caused due to human errors, like accidental deletion of the data or forced shutdowns of the database.
All these reasons can become a factor for the page-level corruption in the SQL Server. We will now take a look at the solutions that will help the users repair the corrupted page in SQL Server.
How to Repair Corrupted Page in SQL Server? – Best Methods
There are different solutions as per the different causes for the SQL Server page-level corruption in the database. Let’s discuss these methods one by one and try to understand how they will help with the page repair.
Method 1: Repair Database Page With DBCC CHECKDB Command
The first method we are going to discuss is using the DBCC CHECKDB command to repair the page corruption effectively. Here are the steps to proceed with this method:
- Firstly, run the DBCC command to inspect and repair the page-level corruption in the database. The command to be executed is as follows:
DBCC CHECKDB(Database_Name, REPAIR_ALLOW_DATA_LOSS); - To change the database into the Single User mode, use the following command:
ALTER DATABASE Database_Name SET SINGLE_USER WITH ROLLBACK IMMEDIATE
This method will help you to inspect and repair the database and the affected page. Now, we will take a look at how a professional solution can help you with how to repair corrupted page in SQL Server.
Method 2: Repair Page Corruption Using Expert Solution
If the users wish for an effective solution to repair the corruption as well as recover the data with complete precision, it is always best to use a professional solution. A similar solution is the SQL Recovery Tool, a solution that helps not only with the recovery of the corrupted page but also restores the affected data with complete data integrity. The steps for using the solution are as follows:
- Install and run the professional tool. Click on the open tab to add the MDF files in the software.
- Select one Quick Scan or Advanced Scan mode as per your requirements.
- After the scan, preview the recovered database objects in the software panel.
- Next, click on the export button to export the recovered data.
- Choose the destination and enter the required details accordingly.
- Choose the objects to be exported and click on export with schema and data option.
- Finally, click on the export button to resolve the page corruption in SQL Server.
Using this solution, users can easily resolve how to repair corrupted page in SQL Server much more conveniently. With the solution, users can easily repair the database page and also recover the affected database.
Conclusion
The article discusses the causes and issues of corruption on a database page. We have also explained and suggested a few solutions that will help the users with how to repair corrupted page in SQL Server in a hassle-free way without damaging the database integrity during the process.