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
There are many reasons due to which MDF and NDF SQL database files can corrupt or damage. Some of the most common reasons are listed below:
Sudden shutdown of the system
Bugs present in SQL Server
Some changes in SQL account
Upgrading from an older version to a newer SQL
Virus or malware attack
File header corruption
Due to these reasons, the SQL database get corrupted and become inaccessible to users. If you try to access the damaged files, then you might get 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 healthy 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.
Step 2. Add MDF or NDF files to fix SQL Server database corruption issues.
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
Can I fix SQL Server data corruption without backup?
Use Recover SQL Database tool to fix all corruption issues without backup.
How can I check is the SQL Server is corrupted?
To check if SQL database is corrupted, you can use this command: DBCC CHECKDB (Name_of_database)