SQL Server is a platform to manage and organise tons of data in a hassle-free way. It is used by numerous organizations to store and manage data. Now, everything has some pros and cons. Similarly, SQL Server also has some flaws associated with it. SQL Server is prone to corruption. Thus, users face different corruption issues while working with the SQL Server. Now, most of the users search for a simple and reliable way to eliminate SQL Server errors. So, in this blog, we are going to discuss top 5 corruption errors that frequently occur in SQL with their solutions.
In this section, we are going to explain methods to troubleshoot different SQL corruption errors.
Now, error 5127 occurs in SQL Server when a user tries to attach MDF/LDF database file saved on your machine. A message will pop up with the Microsoft MS SQL Server environment saying
‘The header for file ‘test.mdf’ is not a valid database file header. The FILE SIZE property is incorrect (SQL Server Error 5172)’
Solution: To fix error 5127, one can recover data from backup files of the database.
The SQL database error 824 is a logical Input/Output (I/O) error. Basically, a logical Input/Ouput means that the page is successfully read from the disk. Additionally, a ‘logical consistency error’ clearly indicates damage due to the corruption in the database. The corruption issue is due to an I/O subsystem component that is faulty.
Solution: One has to check for the following:
SQL Server 8946 error is known as PFS page header corruption. Basically, this error occurs when the header information is not consistent with the page data. Due to this, the SQL Server becomes unable to read those pages and pop-ups the error 8946 on the system that is:
Msg 8946, Level 16, State 12, Line 1 Table error: Allocation page (1:13280496) has invalid PFS_PAGE page header values. Type is 0. Check type, alloc unit ID and page ID on the page.
Solution: The user can resolve error 8946 by reconstructing the PFS pages. Moreover, one can also restore the database from the healthy backup if the database is corrupt. If the problem is related to the hardware part due to which error 8964 occurs then fixing or replacing the hardware might work and resolve the issue.
SQL Server error 5171 occurs due to invalid registry entries, virus infections, power problems or damaged drivers. Moreover, the error results in the corruption of the SQL file. Due to the corruption MDF files and its performance is also affected.
Solution: The solution to fix error 5171 depends on two situations:
Case 1: If the user is having mirrored databases then he/she has to set it online at the time of using one of the mirrored databases. For this, the user has to run the following command:
ALTER DATABASE mydb SET online
If still error 5171 occurs then perform the steps given below:
Case 2: Improper Upgradation of SQL Server
In such a situation, one must run ‘sp_attach_db command. This will help the user to resolve SQL error 5171 ‘MDF is not a primary database file’.
SQL corruption error 945 occurs when the attaching and detaching of MDF file is not properly done. Additionally, the recovery procedure fails to bring the database in a consistent state.
Solution: To fix error 945, one should follow the tricks given below:
Still, if the SQL Server corruption issues are not resolved. What to do?
One can make use of a reliable and smart utility that is SQL Database Recovery. With this software, one can easily repair corrupt MDF and NDF SQL Server database and then export healthy SQL database. The tool is also capable to recover triggers, rules, functions, tables and stored procedures. The software provides Quick and Advance Scan options to eliminate both minor and major corruption issues. One can troubleshoot SQL corruption issues using SQL Recovery software in a hassle-free way.
While working with SQL Server user face different issues. However, the situation becomes worse when corruption issues occur. Thus, in the above section, we have discussed top 5 corruption issues with solutions to resolve them. To resolve any type of SQL Server corruption issues whether it is minor or major, one can opt for an automated solution that is SQL Recovery Tool.