You may encounter functionality issues in SQL Server when any application that uses ADO (ActiveX Data Objects) interface connects to SQL Server. It may cause corruption to the MDF file and cause data loss. You need to perform SQL Recovery to repair and restore the affected database components.

The applications which use ActiveX Data Objects interface in following scenarios might experience functionality problems:

When the application connects to Microsoft SQL Server 2005, Microsoft SQL Server 2000 or SQL Server Desktop Engine (also called MSDE 2000).
Application uses ‘SET NOCOUNT ON’ statement for connecting with Microsoft SQL Server.
Application inserts a row in the table which has an identity column by using the Microsoft ActiveX Data Objects (ADO) client-side cursor.

In such situations, you may face MDF corruption that results into serious data loss.

Root of the issue

When the ADO application queries the identity column value or newly inserted row, value “0” is returned mistakenly. It might result into the application and SQL Server to malfunction and even damage the MDF file. Whether malfunction or corruption occurs totally depends upon how SQL Server and application tackles the scenario.

This issue occurs due to problems in MDAC (Microsoft Data Access Components) components of Microsoft Windows Vista and XP. This problem also takes place after you install hotfix 940569 on computers with MDAC 2.8 SP1 installed.

To make your lost database information accessible from the damaged MDF file, you need to perform <a onClick=”javascript:pageTracker._trackPageview(’/outgoing/article_exit_link’);” href=”http://www.repair-mssql-database.com”>SQL repair</a>. SQL utilities are uniquely designed applications for to-the-point repair and restoration of affected SQL database components.

It is the process of repairing and restoring corrupted MDF file and extracting all data from it. This is best possible using third party SQL Recovery tools.

These are powerful applications that are capable of scanning the corrupted MDF file and retrieving all of its objects like tables, views, rules, reports, triggers, indexes, stored procedures, constraints, defaults etc. These software are user-friendly applications with easy to understand graphical interface. No sound or prior technical skills are required to perform SQL Repair. A user can achieve safe and absolute database recovery by these SQL utilities.

Stellar Phoenix SQL Recovery is the most efficient and powerful <a onClick=”javascript:pageTracker._trackPageview(’/outgoing/article_exit_link’);” href=”http://www.mssqldatabaserecovery.com/”>SQL recovery</a> application. It can easily repair and restore corrupted MDF files and repair all MDF objects. It also recovers the backup files MS SQL Server. It is compatible with Microsoft SQL Server 2005 and 2000. It supports Windows Vista, XP, Server 2003 and 2000.