The most basic unit of storage in an MS SQL Server database is a page, which accounts for 8 KB of size. And 8 such pages consist an extent thereby making 16 extents in 1 MB. An extent is used to allocate spaces for tables and indexes. The well-being of the database structure is absolutely essential for the database. However, at times problem arises in the structure of the database because of various reasons such as virus infection, power surges, human error, hardware failure, etc. In such cases, you should use appropriate measures to rectify the situation. However, if you are unable to do so then you should use a third-party SQL server recovery software to recover SQL database.

Consider a scenario wherein you encounter the following error message while working on an MS SQL Server 2000 database table.

“Table error: Extent P_ID object ID O_ID, index ID I_ID is beyond the range of this database.”

Cause:

The cause of this error message is that an extent has been allocated in an Index Allocation Map (IAM) page for the referenced index ID. In the error message, P_ID is the ID of the corrupted page in the table. The pageinfile of the extent is greater than the expected size of the file specified in the database, which has caused the error.

Resolution:

To resolve this error message, you can perform the following methods, preferably in the given order:

Look for hardware issues: Run hardware diagnostics to resolve any issues. Also, check the error logs to check whether the issue has occurred because of any faulty hardware. You can also swap the hardware components to zero in on the problem. You can also consider switching to a new hardware system altogether.

Restore from backup: Restore the database from its backup if it is updated and clean.

Run DBCC CHECKDB: Finally, you can run the DBCC CHECKDB command, first, without any repair clause to know the corruption level. Then, run the command again with the suggested repair clause. However, you should refrain from using this method if you are not sure about the aftereffects of using the repair clause on the database.

However, if you are unable to address the situation even after using the mentioned methods then you should use a third-party SQL Server recovery software to recover SQL database. These read-only tools are able to perform SQL database recovery using fast yet sophisticated scanning algorithms without damaging the original data.

Stellar Phoenix SQL Database Recovery is an MS SQL recovery tool that enables you to recover corrupted databases created in SQL Server 2000, 2005, and 2008. It is able to perform mdf repair of various database components such as tables, triggers, views, rules, stored procedures, etc. This SQL Server recovery tool is also capable of recovering database constraints and relationships among tables. It is compatible with Windows 7, Vista, Server 2003, XP, and 2000.