Easy Guide to Fix SQL Database Page Level Corruption

Summary: Coming across page-level deterioration in SQL Servers is the most alarming nightmare for any SQL administrator or experienced. The SQL page-level error can risk all your essential data saved on the server. Therefore, comprehending the corruption, its causes, and the answers to fix SQL database page level corruption at an early stage would be a wise move. We introduce 2 methods: one is the traditional approach, and the other is a professional SQL database recovery tool. Download Now   Purchase Now

The structure query language (SQL) is even understood as SQL Server. It is a relational database management system (RDBMS) that is utilized by numerous small as well as large institutions to store or control their essential data. Nevertheless, being a SQL Database admin, you might have encountered several database-related problems, including SQL page level corruption. Getting this mistake could show you the inaccessibility of your crucial data even if you have full admin privileges. Thus, before going to the explanation part, let’s know the basic cause of page-level corruption in SQL Server.

Possible Reasons for SQL Server Page Level Corruption

SQL Server stores complete database information in the format of pages, as a page is the primary storage unit of the SQL Server database. The SQL database files, such as MDF and LDF, are divided into multiple pages. Whenever corruption takes place on SQL Server, it initiates at the page level foremost. Hence, it is relatively straightforward to fix it on a particular page rather than a complete file. Below are some potential causes that cause page-level corruption in SQL Server:

• Hardware Failure: The primary cause of page-level corruption in an SQL Server database is often a malfunction in the electronic circuits of the hard drive or other components within the computer system.
• Abrupt Power Failure: A disruption in the power supply while the database is running can result in the loss of important data. Therefore, having a backup power solution for the server can help prevent SQL Server corruption.
• Virus or malware attack: When downloading software applications to the server, ensure that the setup files are thoroughly scanned to prevent database corruption.
• Wrong Update Installation: Before installing software applications on the server, make sure to thoroughly scan the setup files to prevent database corruption.

Note: If you encounter issues accessing data due to any of the aforementioned reasons, it is advisable to create a backup of your database and implement some immediate fixes.

How to fix page corruption in SQL Server?

By conducting the DBCC CHECKDB command, one can correct or fix SQL database page level corruption with comfort. But before performing this command, taking the full backup of your actual SQL database files (MDF and LDF) is recommended to save your data from any data disaster circumstances. Let’s observe the steps below to learn how to find the corrupt page in SQL Server:

1. 1. Download text comparison software to review the distinctions between the authentic and the corrupted database files.
   2. Now execute the DBCC CHECKDB command on the damaged or corrupted files.
   3. Now switch on the trace flag 3604 and execute the DBCC PAGE parameter to analyze the infected page contents.
      • DBCC TRACEON (3604)
      • DBCC PAGE ({ ‘dbname’ | dbid}, filenum, pagenum [, printopt=0|1|2|3])

Here, in this command, Filenum and Pagenum are indicated as page ids. Some additional parameters are:

1. • 0: It is utilized to print the page header.
   • 1: It represents the SQL page header with per-row hex dumps.
   • 2: Page header with full page hex dump of the page
   • 3: Page header along with per-row interpretation
2. To verify the page number, run the Select * from dbo. table command.
3. Now, after establishing the location of corruption, use the comparison tool to compare the corruption file.
4. At last, improve the infected or corrupt page and run the DBCC CHECKDB command.

Through this, you can fix SQL Database Page Level Corruption with the manual method without paying any additional penny.

Drawbacks of this Manual Method

There are various restrictions on using manual methods. Some of them are mentioned below:

• If multiple locations or a large area are corrupted, other types of pages may be affected, potentially preventing SQL Server from opening the file.
• Directly editing the file is prone to errors. Since checksums are computed for each page, any mistakes during copy/pasting can result in I/O errors or prevent the database from opening.
• This solution will require time and practice to execute successfully, so it’s important to prepare and rehearse it in advance.

These are some limitations of the manual method. Hence, we recommend using a professional approach to repair page level corruption in SQL databases. We move to the next section of this article to introduce the professional approach.

An automated solution: How to restore page level in SQL Server?

Executing the aforesaid techniques is quite problematic, as it mandates thorough specialized knowledge to fix SQL database page level corruption. Hence, it is recommended to opt for a professional Aryson SQL Recovery tool to fix SQL database corruption issues with ease. Employing advanced algorithms, this tool has demonstrated success in fixing all types of corruption in SQL Server databases and recovering inaccessible objects from MDF and NDF files. Users have noted that the software utilizes a highly effective non-destructive repair algorithm, ensuring the preservation of database integrity. For a dependable and efficient solution, this tool is an excellent choice.

Steps to fix Page Corruption using a professional tool:

1. Download and launch the SQL Database Recovery Tool.
2. Now, open the MDF file and select recovery mode.
3. After that, the scanning process was started.
4. After completing the scanning process. Click OK to select a folder.
5. Choose either SQL Server or SQL Script.
6. Click OK to save the resultant recovered file.

Conclusion

Page-level corruption in SQL Server databases can arise from various causes. We’ve covered how to detect such corruption, and if multiple pages are affected, the DBCC CHECKDB command can be used to attempt repairs. However, these methods have their limitations. As an alternative, you can use a professional SQL repair tool like Aryson SQL Data Recovery Tool to Fix SQL Database Page Level Corruption. This tool can effectively repair severely damaged SQL database files and restore all data, including pages, with high precision.

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