Repair SQL Database without Data Loss Using Manual & Software Solution

Microsoft SQL Server is a crucial part of any business organization today, and any damage or corruption in the database can lead to various challenges such as data loss or data inaccessibility. In such situations, it becomes necessary for the database administrators to repair SQL database without data loss and access the complete database again efficiently. Through this write-up, we will learn the common issues due to which the database becomes inaccessible and further the best ways to restore the database to a healthy state.

Let us take a look at the causes before knowing the solutions. So, below and we have listed all the reasons related to restore SQL server database.

Why do We Need to Repair SQL Database Without Data Loss?

Database administrators face various situations where database issues can compromise data security and create challenges when accessing or managing data. Here are other reasons you may need to repair a SQL Server database for better performance.

• The most common reason for restoring a SQL database is database corruption that completely makes the database inaccessible or results in complete data loss. This requires users and database administrators to repair the database files and secure SQL data and records completely. 
• Another reason is to secure the database tables from complete loss due to a server or hardware crash. 
• There are various SQL Server errors that often create challenges for the database administrators and further restrict them from opening or reading the data completely. 

These are some of the common reasons that require users to repair SQL database without data loss for complete restoration. We will now move to the methods that will help restore the database to a healthy state.

Also Read: How to Fix SQL Server Error 823 without Any Hassles?

Now, as we know some of the common reasons to repair SQL Server database, let’s now proceed with the solutions. Before jumping right to the methods, we will first take a look at the prerequisites for a safe method execution and then carry out the steps for best results.

Prerequisites for Safe SQL Database Restoration

There are certain things you need to remember and take care of, such as:

• The specified database must be in single-user mode
• Before the database repair process, please create physical copies of the files associated with a database, such as the primary data file (.mdf), secondary data file (.ndf), complete transaction log files, etc.
• Ensure that the database state of the database is in emergency mode.

Repair SQL Database Without Data Loss Using DBCC CHECKDB

With a healthy backup file available, fixing lost or corrupted data is not a big concern. The following DBCC CHECKDB instructions or commands can be used to restore the database.

• DBCC CHECKDB [Database Name]: In the command line or through Query Manager, use this command to fix the entire database.
• REPAIR_ALLOW_DATA_LOSS: This command allows you to fix data with the help of row allocation and deallocation. Damaged content, line errors, page errors, and column errors are all removed by this command. However, this process can be quite tedious and carries the risk of permanent data loss; this is why it is not an ideal method of restoring consistency to a SQL Server database.
• REPAIR_FAST: This command is also used to repair SQL database without data loss. It will take less time, but it only helps with minor damage and shows no certain results.
• DBCC CHECKTABLE (TABLE_NAME): To repair a corrupted database table, use this command in Query Manager or the command line.

All commands should execute if you have Microsoft SQL Server Management Studio. To do this, you must first open it in your framework and then follow the instructions listed below.

1. Find the toolbar, enter it, and select the New Query button.
2. Go to the New Search page.
3. Enter the SQL script listed below:
   • EXEC sp_resetstatus [DATABASE_NAME];
   • ALTER DATABASE [DATABASE_NAME] SET EMERGENCY
   • DBCC CHECKDB ([DATABASE_NAME])
   • ALTER DATABASE [DATABASE_NAME] SET SINGLE_USER WITH ROLLBACK IMMEDIATE
   • DBCC DATABASE ([DATABASE_NAME], REPAIR_ALLOW_DATA_LOSS)
   • ALTER DATABASE [DATABASE_NAME] SET MULTI_USER
4. Perform repair now.

Limitations of Manual Solution 

There are certain limitations also associated with the manual solution. Some of them are:

• REPAIR_ALLOW_DATA_LOSS or REPAIR_FAST aren’t very reliable ways when it comes to repairing a SQL database with severe corruption. REPAIR_ALLOW_DATA_LOSS can only be used as a last resort or emergency option when there is no fresh backup available to repair data.
• These commands are highly supported. But, not considered the best option to bring the SQL Server database to a consistent state. Because the successful execution of this command will also result in loss of data.
• These commands do not examine any disabled index. Moreover, it does not ensure ACID properties in any transaction.

Repairing corrupted data and its associated components can be very time-consuming if done manually. In such cases, it is optimal to use a professional solution for database recovery. It can save time and effort and can generate output with higher accuracy. So, with the help of a professional solution, the whole process becomes seamless and quick. That’s why we have told you a great solution below.

Read More: Troubleshoot SQL Database Error 3624 with Ease

Professional Way to Repair SQL Database Without Data Loss 

The manual method is more of a troubleshooting solution that only repairs minor corruption and can also result in data loss. The limitations of the manual solution can be eliminated by using a dedicated solution like Revove SQL Recovery Software. It is a smart solution to repair and recover data from corrupted or damaged SQL Server databases without any external dependency.

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The tool is capable to fix the header level corruption in the physical file of the database. It also supports repairing page-level corruption in the database file. Also, exporting the repaired database into a live SQL Server present on the same machine or on a network. Also, the tool allows you to save the database items as SQL Scripts, or CSV files.

Steps To Restore SQL Server Database

Here are some easy and quick steps to repair a corrupted SQL Server database without a backup.

1. Download and install the Software and click Open to add the database file.
2. Then, browse the MDF file from your system and choose the Scan mode to repair the database of the SQL server with corrupted or damaged files easily.
3. After that, preview the MDF file items such as tables, stored procedures, functions, views, etc.
4. Finally, choose an export option and click the Export button to save the repaired SQL Server database easily.

Summing Up

Certain circumstances arise when database administrators have to cope with corruption in the SQL Server. This becomes worse when there is no backup available to repair the database. One can surely look to run the DBCC CHECKDB command to alter the corruption. But, it can only work on the minimum level of corruption with the possibility of data loss.

So, in this article, we have discussed the ways to repair SQL database without data loss. The user can try manual command line method to repair SQL server database. But, in case you found any difficulty, then you can take the help of the automated solution.

FAQs

Q-1. What is the size limit of this both manual & automated methods to repair the damaged database?

Ans: There is no size limit in any method. However, the manual method becomes complex with larged sized data file. Whereas, the automated tool works smoothly with all sizes of MDF file.

Q-2. Can we repair SQL Database from NDF files? Are MDF files compulsory?

Ans: Users can repair the corrupted database using both MDF & NDF files if they use the software. In the manual solution, an active SQL Server in the system is the requirement.

Q-3. Is the automated software safe to use?

Ans: Yes, the advanced tool is recommended by Microsoft MVPs. Moreover, it has been in the industry for over a decade now. Experts & users around the globe praises its capabilities.