Are you facing assertion failure errors, while executing queries on MS SQL Server 2008 or 2005 databases? Does the query execution process fail halfway and you encounter errors? You may face the assertion failure problems due to either software bug or Master Database File (MDF) corruption. In both the cases, you can not access the database and come across data loss situations. In order to extract data in these circumstances, restore the database from backup. However, if the backup is unavailable, Master Database File Recovery becomes essential.

For example, the process may fail when you execute a distributed query, which uses linked server in MS SQL Server 2008 or in MS SQL Server 2005. Furthermore, you come across the below error message:

"OLE DB provider "SQLNCLI" for linked server "Linked Server" returned message "No transaction is active.". Msg 3624, Level 20, State 1, Line 1 A system assertion check has failed. Check the SQL Server error log for details. Typically, an assertion failure is caused by a software bug or data corruption. To check for database corruption, consider running DBCC CHECKDB. If you agreed to send dumps to Microsoft during setup, a mini dump will be sent to Microsoft. An update might be available from Microsoft in the latest Service Pack or in a QFE from Technical Support."

When an assertion measures to false value at run-time, 'assertion failure' may occur. It generally causes the execution process to abort. Assertion failure depicts attention to a location at which the logical database inconsistency is detected.

Assertion Failure renders MDF database inaccessible. In order to access your valuable data in the database, you need to identify the cause of this behavior and perform MDF File Recovery by fixing it.

Cause:

As stated in the above error message, this problem is caused by database corruption or application bug.

Resolution:

If the problem is caused by application bug or malfunction, you need to reinstall the SQL Server. In case of database corruption, repair and restore the damaged MDF file using MDF Recovery software.

The applications use high-end scanning methods to thoroughly scan the database and Recover MDF file in an absolute manner. They preserve the integrity of your data with read-only and non-destructive conduct.

Stellar SQL Database Recovery is the most comprehensive utility the repairs and restores damaged MDF file in all cases of corruption. It works well with Microsoft SQL Server 2008, 2005, and 2000. The software recovers all SQL Server database objects, tables, reports, forms, macros, constraints, triggers, and stored procedures.

Mark willium is a database expert doing research on database recovery software.

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