Best Tutorial to Resolve Database Corruption in SQL Server

Are you looking for solutions to fix the database corruption in SQL Server? If yes, then the article is for you. So this blog is aimed at users who are interested in finding out the way to repair databases in SQL servers. It can be a tedious task to repair a corrupt SQL Server database if you do not know how to do it properly. Here, we will discuss some manual and automated methods to repair corrupt SQL databases. As an automated solution, We will Sysinfo SQL Database Recovery. But before proceeding to the methods, we should understand some corruption causes of the SQL Server Database.

Reason for Database Corruption in SQL Server

There can be a lot of reason for SQL server Database Corruption. Several causes are mentioned below:

• When unexpected power failure, hardware failure, or improper shutdown occurs.
• An error occurred when the database file was damaged or inaccessible.
• Due to a virus attack on the SQL server database.
• When the disk has not had enough space available for the Microsoft SQL Server
• When the SQL Server Database files crashed.
• If the database resource and database files are Unavailable, this may be responsible for Database Corruption in SQL Server.

Above are some causes for the database corruption of SQL Server. Now move towards the solution of the SQL database recovery.

How to recover SQL Server Database from Suspect Mode

1. Firstly run Microsoft SQL Server Management Studio on your device and connect to your database.

2. After that, tap on the New Query button. Type the below-mentioned SQL script in the new query page and Replace [YourDatabase] with the name of your database.

EXEC sp_resetstatus [YourDatabase];

ALTER DATABASE [YourDatabase] SET EMERGENCY

DBCC checkdb([YourDatabase])

ALTER DATABASE [YourDatabase] SET SINGLE_USER WITH ROLLBACK IMMEDIATE

DBCC CheckDB ([YourDatabase], REPAIR_ALLOW_DATA_LOSS)

ALTER DATABASE [YourDatabase] SET MULTI_USER

3. Lastly, click on Execute button. Now your database will no longer be marked as suspect, and you can access it.

It was a method to fix the database corruption in SQL Server. Let’s know another approach to repair the database in the SQL server.

How to Recover the Full Database From A Backup File

It is common for MS SQL Server users to operate large databases and take backups of their databases daily. It is possible to see some corruption in the SQL Database when a user connects to the server. You can now restore your database from your backup file and remove the corruption. 

1. Go to the Object Explorer, connect to an instance of the SQL Server Database Engine, and then expand it.
2. After that, Right-click on the databases and select the restore database option.
3. Now use the Source section to specify the source on the General page, and the location of the backup sets to restore.
4. Upon selecting the Destination section, the Database box is automatically filled with the database name. Enter the new database name in the Database box.
5. Select Timeline to access the Backup Timeline dialog box to select a point in time to manually stop the recovery action in the Restore to box. Leave the default as To the last backup taken. For more details on choosing a specific point in time, see Backup Timeline.
6. Make sure the backups you wish to restore are selected in the Backup sets to restore the grid. This grid shows the backups available for the specified location. It is recommended to create a recovery plan by default. By changing the selections in the grid, you can override the recovery plan suggested. The backups that depend on the restoration of an earlier backup are automatically deselected when the earlier backup is deleted. To learn more about the columns in the Backup sets to restore the grid, see Restore Database (General Page).
7. Select Files in the Select a page pane to open the Files dialog box. In the Restore the database files as a grid, you can specify a new restore destination for each file so the database can be restored to a new location.
8. Select any of the following options on the Options page, in the Restore options panel, if appropriate for your situation, if you want to view or select the advanced options:
9. WITH options (not required):

• Overwrite the existing database (WITH REPLACE)
• Preserve the replication settings (WITH KEEP_REPLICATION)
• Restrict access to the restored database (WITH RESTRICTED_USER)

2. Choose an option for the Recovery state box. After restoring the database, the state of the database is determined by this box.

• Rolling back the uncommitted transactions is the default behavior of RESTORE WITH RECOVERY, which leaves the database ready for use. It is not possible to restore any additional transaction logs. If you’re restoring all of the necessary backups at once, select this option.
• RESTORE WITH NORECOVERY leaves the database non-operational and does not roll back uncommitted transactions. It is possible to restore additional transaction logs. Databases cannot be used until they are recovered.
• RESTORE WITH STANDBY which leaves the database in read-only mode. In order to prevent recovery effects from being reversed, it undoes uncommitted transactions but saves the undo actions in a standby file.

3. Take a tail-log backup before restoring. Not all restore scenarios require a tail-log backup. You can find more information on scenarios that require tail-log backups in Scenarios That Require Tail-Log Backups (SQL Server).
4. The restore operation may fail if there are active connections to the database. Make sure all active connections between Management Studio and the database are closed by checking the Close existing connections option. When this check box is selected, the database is set to single-user mode before the restore operation is performed, and then to multi-user mode after it has been completed.
5. Choose Prompt before restoring each backup if you want to be prompted between each restore process. This isn’t required unless the database is large and you need to monitor the status of the restore procedure.

9. Lastly, click the OK button.

An Automated Way to Repair Corrupt SQL Database

In this method, we are utilizing third-party software named Sysinfo SQL Database Recovery to repair database in SQL server. It successfully repairs SQL Database objects like tables, views, stored procedures, programmability, and triggers, without any inconvenience. It is a completely Windows-based software that recovers essential data from corrupted MS SQL database files. Moreover, It successfully repairs SQL Database objects like tables, views, stored procedures, programmability, and triggers, without any inconvenience. 

Conclusion

Here we are going to end the blog with a few lines. So we have discussed some reasons for database corruption in SQL server. After that, we described the three methods of which two are manual and one is automated. You have to perform a lot of steps in the manual methods which may not be suitable for novice users. For better and risk-free results, use the automated method. Also, you can read another blog to resolve the SQL recovery pending state in SQL server.