SQL Server Database Corruption Causes and Solutions

Microsoft SQL Server is the largely used relational database management system in almost all organization for managing data professionally. Despite the usefulness of SQL Server, there are many errors and corruption problems also arises for administrators. As a result, users cannot access their data and need to fix the issues. In this blog, we will learn about common SQL Server database corruption causes, errors, and solutions.

SQL Server Database Corruption Causes

There are many reasons that MDF and NDF SQL database files can corrupt or damage. Some of the most common reasons are listed below:

Hardware Failure

Sudden shutdown of the system

Bugs present in SQL Server

Some changes in SQL account

Upgrading from an older version to a newer SQL version

Virus or malware attack

File header corruption

For these reasons, the SQL database is corrupt and inaccessible to users. If you try to access the damaged files, this section shows several errors:

Msg 823, 824, 825 in SQL Server

Page Level Corruption

Table Corruption Error

Non-clustered index corruption error

Metadata corruption error

These are the most common errors of SQL Server database corruption. To get rid of all these errors, it is always recommended to use a backup to restore the SQL database.

Tips to Avoid SQL Database Corruption

Let us know what you should never do if you have problems with the SQL database corruption.

Do not reboot server

Do not shutdown SQL Server

Do not connect/re-connect database

Make a proper backup before upgrading SQL Server

Solutions for SQL Server Database Corruption Repair

Microsoft always recommends that you regularly back up the SQL database so that you can easily restore the SQL database in the event of damage. Backup is the best option to deal with corruption. However, it is not always a good idea to restore all of the data because some information is missing between the last backup and the time of the disaster.

You can use the DBCC CHECKDB command to check and fix corruption problems. It is not always possible to repair badly damaged files with this command.

If you do not have the most recent backup or the backup is damaged, the SQL database files MDF and NDF cannot be repaired. In such a situation, you can get help from third-party tools like SQL Recovery.

Recover SQL Database Tool is the expert-recommended software to repair corrupt database files without backup. It helps the user to scan and recover tables, views, rules, functions, triggers, and other objects. The tool has advanced option to recover deleted objects and shows a preview in red color.

Steps to Fix SQL Server Database Corruption via Recovery Software

Step 1. Download the tool and install it on your machine.

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Step 2. Add MDF or NDF files.

Step 3. Choose Quick or Advance Scan option, and select SQL version.

Step 4. After scanning, the software will display the preview of recovered items.

Step 5. Click Export to restore the SQL database files.

The Final Words

There can be many reasons for database corruption. In this blog, we have covered the most common SQL Server database corruption causes, errors and solutions. Here we explained that you should never do if you have corrupted data. Regular backups are the best and most effective way to repair corrupt files. If you don’t have a recent backup of your database or the backup is corrupt, you can try the SQL database recovery tool. This is the expert-suggested solution to repair damaged MDF and NDF files with all objects.

Frequently Asked Questions