Thursday, August 26, 2010

How to Repair Corrupted MS SQL Server 2008 Database by Rectifying Error 2537

Are you facing problems while using MS SQL Server 2008 database? Then, there may be chances that the database may have got corrupt. The database corruption can occur due to various reasons such as virus infections, abrupt system shutdown when the database is open, hardware problems, etc. Due to database corruption, you would not be able to access the database or face abrupt behavior. In such cases, you should perform appropriate SQL repair methods to solve the problem. If you are unable to repair MDF file, then you should use a third-party MS SQL repair software to do the needful for you.

Consider a scenario wherein you encounter the following error message while working on an MS SQL Server 2008 database:

"Table error: Object ID O_ID, index ID I_ID, partition ID PN_ID, alloc unit ID A_ID (type TYPE), page P_ID, row ROW_ID. Record check (CHECK_TEXT) failed. Values are VALUE1 and VALUE2."


The root cause of such behavior is that the ROW_ID row (mentioned in the error message) failed the condition asked in the CHECK_TEXT.


To resolve this situation, you should perform the following methods in the given order:

Resolve the hardware issues: You should check the error logs and run hardware diagnostics to see if it has occurred due to any hardware malfunctioning. You can also swap the hardware components to isolate the exact reason for the error. Lastly if nothing works out, then you can also consider reformatting the hard disks and reinstalling the operating system.

However, for doing this you should ensure that you backup valuable data.

Restore from backup: If the problem is not hardware related, then you should check the backup. If it is updated and clean, then you should restore the database from its backup.

Run DBCC CHECKDB: If the backup is not updated, then you should run the DBCC CHECKDB tool with the suggested repair clause. This tool will rebuild the index, if exists.

The problem will be fixed once you perform the aforementioned MDF file repair methods. However, if it is not so and the problem is persisting then you should use a third-party MDF repair utility to repair SQL database. Such SQL repair tools possess rich user interface and use fast yet sophisticated scanning algorithms to repair mdf file.

SQL Data Recovery is an SQL repair software that repairs MDF files that are logically corrupted due to any reason. It is specifically designed to repair SQL databases created in MS SQL Server 7.0, 2000, 2005, and 2008. This MS SQL repair utility recovers various SQL database objects such as NDF files, tables, defaults, triggers, stored procedures, etc.

Tuesday, August 24, 2010

Memory allocation issues in MS SQL Server 2000 database results in Error 8902

In MS SQL Server, the system errors related with memory allocation often prove to be fatal for the database. Such problems can be caused by several reasons such as database corruption, which, in turn, can be the outcome of various other reasons. These reasons include virus infections, abrupt or unplanned system shutdown especially when the database is open, database header corruption, etc. You should try to find out the exact reason for such behavior and try to address the situation. If nothing works out, then I would suggest you to use a third-party MDF recovery software to recover SQL database.

Let us take a look at one of the system error that appears while you are working on an MS SQL Server 2000 database:

"Memory allocation error during DBCC processing."


Such memory allocation error occurs when there is no memory for the non-clustered index coverage checks.


Such system errors relating to memory allocation should be dealt by performing the following MDF recovery methods. Please note that you should perform these methods only in the given order:

Recovering the hardware corruption problems
Restoring from database backup
Running DBCC CHECKDB utility

For more resolution details visit this link:

Sunday, August 1, 2010

How to solve page header corruption cases in MS SQL Server 2008 database

You must have experienced cases of database corruption more often than not. When you face database corruption, you are unable to work further on the database. These instances can occur due to any arbitrary reason. Some of the most prominent ones could be unplanned system
shutdown especially when the database is open, page header corruption, virus infections in the database, etc. You can repair SQL database by using few workarounds. However, if nothing works fine then using a third-party SQL repair software is the best option.

For instance, the following error message appears while you are working on an MS SQL Server 2008 database:

“Table error: alloc unit ID A_ID, page P_ID. The test (TEST) failed. The values are VAL1 and VAL2.”


Such problem has happened as a database page, P_ID, has not passed auditing test because of page header corruption. You can refer to the error message where it is clearly shown that the TEST string has failed the test.


In such erroneous situations, you should try to address the issue by performing MDF file repair. For the same purpose, there are the following methods that should be performed, ideally in the exact given order:

Verify the hardware components: You should check the state of the hardware components by the following measures:

Check the SQL Server error logs to verify if there is any hardware related error.

Swap the hardware components to narrow down on the exact hardware error, if any.

Check if the disk controller has enabled write-disk caching. If yes, then take the assistance of the hardware vendor to sort this issue.

Format hard drive and reinstall fresh copy of operating system to get a fresh and clean system.

Reinstate database using backup: If the hardware components are alright, then check the state of the database backup. If it is updated, then replace the database with the backup.

Now, check the database after performing these methods. The problem would not be appearing any more. However, at times the database is so severely damaged that it is not repaired using these methods. In such cases, the use of third-party MDF repair tools is required. These tools repair SQL database without overwriting the actual database thus ensuring safe and secure SQL recovery.

In these situations, the most recommended MDF repair software is Stellar Phoenix SQL Data Recovery that repairs MDF file from any random instance of database corruption. Developed for MDF files in MS SQL Server 7.0, 2000, 2005, and 2008, this MS SQL Server repair utility repairs several database objects such as stored procedures, collations, defaults, triggers, tables, NDF files, etc. In addition, this .MDF repair software is compatible with Windows 7, Server 2008, Vista, Server 2003, XP, and 2000.

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