File stream corruption in SQL Server database

When you try to restore the Microsoft SQL Server database .MDF file from the sequence of transaction log backups, MS SQL Server database gets damaged. In such situations, you might have encountered the following event in the Application Event log of Microsoft SQL Server:

“Filestream corruption – missing files, error 7904

The corruption is detected on a database that was restored from a sequence of backup logs. The original database does not seem to be corrupted.

7904 16 2 Table error: The filestream file for “FileID” was not found.”

What happens in such situation is the occurrence of data loss situations.

Cause

Reason behind this abrupt behavior of MS SQL Server is the filestream corruption. When it happens, the SQL Server database gets damaged, and the .MDF database become inaccessible.

• The Filestream is a critical SQL Server database component that integrates SQL Server Database Engine with NTFS file system by storing the varbinary(max) BLOB (Binary Large Object) data as the files on file system. Win32 file system interfaces offer streaming access to data. It uses NT system cache for data caching.

Resolution

User can recover the damaged SQL Server database using SQL Recovery tool, which perform extensive scan of damaged .mdf database and extract all of the database objects such as tables, reports, forms, triggers and stored procedures.

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