SQL Server database is a set of tables and can also comprise stored procedures, constraints, views, indexes and transaction log files. A database storage space is basically divided into several pages, which serves as the basic unit of all I/O operation in SQL Server. Each of these pages is assigned with a 96-byte header that is responsible for holding all the metadata information of the page. All the data of database are stored in MDF files. But sometimes, you observe SQL Server log giving some sort of errors. It might indicate that your SQL Server database is affected from corruption and requires restoring from backup. But in case of unavailability of backup, you should use mdf file repair tools, which use powerful file repair algorithms to fix SQL database corruption.
While using and accessing your SQL Server database, you might receive the similar error message:
Msg 2540, Level 10
The system cannot self repair this error.
Cause
This error message indicates that SQL Server has encountered an error that could not be automatically repaired by its check code. Such kinds of errors include:
. Metadata corruption
. Corruption of PFS pages
. One or more system files corruption
. PFS or Page Free Space pages are responsible for holding allocation status for each database page. They record information like whether the page has been allocated for storage or not, the amount of fee space available on each page etc.
Such issues might arise due to hardware issues.
Solution
Follow these methods to fix 2540 errors with SQL Server database:
. Diagnose your system for hardware issues
. Check if all system files are healthy. Reinstall the system, if required
. Restore the database from the recent backup, if present and is valid
. If no clean backup is available, run DBCC with repair option. But it can cause data loss as the process deletes the corrupted pages
. For safe MDF Recovery, use third-party tools of SQL database recovery
MDF Repair software are appropriate tools to scan and repair damaged SQL Server databases. Using powerful and safe scanning algorithms, they avail effective database recovery.
Stellar Phoenix SQL Recovery is an advanced and safe application that can effectively scan and repair damaged SQL databases. It is a complete mdf repair solution that can repair and restore all database objects like tables, rules, stored procedures etc. The application is compatible with SQL Server 2008, 2005 and 2000. It is a graphically rich application that offers advanced repair options.