Microsoft SQL Server provides you a powerful utility to check the integrity and consistency of both logical and physical components, known as DBCC CHECKDB. The utility checks database integrity in three different phases. In first phase, consistency of allocation structures in hard drive space is checked and integrity of all the database pages and their structures are checked in the second phase.

In third and the last phase, catalog consistency is checked. If the tool encounters any kind of errors in any checking phase, the process gets terminated improperly. After this behavior, SQL Server Database remains in corrupted and inaccessible state. It leads to severe data loss situations and requires SQL Database Recovery to extract inaccessible data, if an updated backup is not in place.

The DBCC CHECKDB process gets terminated if your Microsoft SQL Server database is severely damaged and it is beyond the repair abilities of the DBCC CHECKDB utility. When the DBCC CHECKDB tool fails to bring your Master Database File (MDF) of Microsoft SQL Server into working state, you may face an error message similar to the following one:

"Table error: Page P_ID allocated to object ID O_ID, index ID I_ID was not seen. Page may be invalid or have incorrect object ID information in its header."

Grounds of the problem

The problem may occur if a page, which is allocated as mentioned, but is not seen with the Index/object ID in header of page. The database page contains different index ID in header. Thus, there is a matching 2534 (a page that is allocated by other object) error for page. You may come across the same problem if your database is damaged and DBCC CHECKDB utility can not read it for checking the integrity.

Resolution

You can try the below steps to perform SQL Server Recovery to fix the issue:

Run hardware diagnostic to detect and fix hardware related problems.
Restore database from recent backup.
Use third party MS SQL Recovery applications to repair and restore damaged database.

The SQL Recovery software enables you to systematically scan the whole database and extract all inaccessible data from it. They have simple graphical user interface to offer easy and quick recovery of damaged database objects.

SQL Recovery software successfully repairs and restores database in all cases of corruption. The software works well with Microsoft SQL Server 2008, 2005, and 2000. It restores all MDF file objects, such as tables, reports, forms, macros, constraints, data types, and more.