SQL Server is one of the most revolutionary pieces of technology we got. For storing huge data, we definitely need huge databases. However, there are scenarios where users undergo SQL Server database corruption repair operations. Evidently, this is because the huge amount of data is prone to corruption. This is why users should always keep a backup with themselves.
Now, in this article, we are going to have a look at the causes of this corruption, & relevant manual & automated solutions. We’re quite sure that users can easily repair their SQL Server database till the end of this master. Moreover, our final suggestion will help you select the right way to repair the files more precisely.
SQL Database Corruption Causes – All You Need to Know
There can be multiple causes why users’ SQL Server database gets corrupt. The major ones are listed below to let you know the primary reasons for the problem. This way you can avoid them in the future for sure.
Power Failure
Abrupt or sudden power failure causes the system shut down in an abnormal manner resulting in the corruption of data inside the SQL Server. Make sure you shut down the system properly & have Power backups.
Technical Issues
There can be several technical issues too, like bugs or errors in the network, system, application, etc that can result in a corrupted database. Just keep everything secure & cross-check all security measures frequently.
Cyber Attacks
Virus, malware & Ransomware are other threats that users need to avoid. Wallet ransomware is known for affecting the MDF files of your SQL server. This is a major cause of corruption all over the world.
Hardware Issues
Damage in the hardware that stores & manage the entire data causes the issue. It is a major cause of page-level corruption. Moreover, it is very common in western countries due to the unawareness of the technicalities involved.
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Manual Method for SQL Server Database Corruption Repair
Let’s start with the manual method to repair the database. Here we are going to repair the SQL Server database marked as suspect or corrupted. Users can not access the data in this scenario.
Follow the below steps to start this operation.
Phase #1 – Setting Emergency Mode
This suspect mode allows system administrators read-only permissions to the database. Moreover, only the system administrators can set the Emergency State & no one else.
Run the script mentioned below on the panel:
ALTER DATABASE DATABASE_NAME SET EMERGENCY
For an instance, we’re going with the database as Testing.
Phase #2 – Identifying the Damage Level
To scrutinize the errors, users need to run the DBCC CHECKDB (DB_Name) query.
DBCC CHECKDB (Database_Name)
Phase #3 Execute Repair Demand
For repairing SQL database corruption, here we have three methods. However, we’re going to check out the one having the least possibility of data loss. This one is called the Repair_Rebuild method.
It can perform time-taking operations that include the process of rebuilding the indexes in depth.
Note- users need to make sure that the Single_User mode is activated in the database.
DBCC CHECKDB (N ‘database name’, REPAIR_REBUILD) WITH ALL_ERRORMSGS, NO_INFOMSGS;
Phase #4 Multi_User mode Database Setting
After the successful repair of the database, use the below query to make things as they were before. This will change the database mode from singer user to multi-user.
ALTER DATABASE DATABASE_NAME SET MULTI_USER
Another Manual Way to Get the Results
Let’s check out another manual method to get the desired results. Here we are executing SQL Server database corruption repair operation in the Recovery Pending Mode.
Whenever the problem arises due to any resource malfunction, then this issue is obvious.
Here, the SQL server database is not certainly damaged or corrupted. However, it is for sure unavailable to users due to several errors.
To execute this operation, users need to detach the existing database first. Secondly, they need to attach it again using the T-SQL query. This way users can access their files again without facing any hassles.
SQL Server Database Corruption Repair Automatically
Now we‘re going to look at the automated method for executing this repair operation for the database. Users need to download the Best SQL Database Recovery Tool & then simply follow the five simple steps.
This automated method is designed with high-level technology integrations like artificial intelligence, multi-level working, etc. It repairs export data directly to server or Export Data from MS SQL Server to CSV as per users’ preference. Moreover, users can create a script file also to run it in the command prompt.
Follow the below-mentioned steps to start SQL Server database corruption repair:
Step-1. Click on the Open button to add MDF files to the software.
Step-2. Select Quick or Advance Scan for detecting corruption.
Step-3. Now Preview Data & Click on the Export button option.
Step-4. Here, Select CSV file format & then proceed further.
Step-5. Finally, Select Data & Click on the Save button.
Features of the Automated Method
The automated approach has several features that we are going to list down below. These features help users to understand its capabilities in a better way. These features accurately remove SQL database corruption.
- The software repairs SQL database from damaged SQL server files.
- It highlights the deleted database objects in Red color while previewing.
- It auto-detects the file version of SQL Server & also offers manual options.
- Tool is capable to repair tables, functions, views, stored procedures, rules, etc.
- Apart from server, it exports the repaired & recovered data into CSV, Script File.
- It is compatible with the SQL Server version 2000, 2005, 2008, 2008 R2, 2012, 2014, 2016, 2017, & 2019.
In A Nutshell
Now users can easily repair the database without any hassles. Our primary advice for users is to keep calm & try not to panic. Secondly, they should decide on a genuine method for SQL Server database corruption repair operation. As per our suggestion, users must opt for the automated solution as it’s the fastest & safest one. Hence, selecting an ideal solution can reduce users’ challenges for sure.
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