Saturday, July 3, 2010

Resolving Error 7965 and recovering corrupt database in SQL Server 2000

In SQL Server databases, an Index Allocation Map (IAM) page is a page type that stores the details about the extents, which is a collection of eight pages. These IAM pages are used to navigate through the heap, thereby making the searching process much faster. Well, at times these IAM pages do not exhibit the desired working due to database corruption. Database corruption can occur due to various reasons such as power outages, human errors, damaged hardware components, virus infections, etc. You should find out the cause and the resolution to recover SQL database. If you are not able to recover the database, then you should use a third-party SQL database recovery software to do the needful.

Consider a scenario wherein you encounter the following error message while working on the SQL Server 2000 database:

"Table error: Could not check object ID O_ID, index ID I_ID due to invalid allocation (IAM) page(s)."


The root cause of this error message is that one of the IAM pages, which was identified by various Ids, has corrupted.


To resolve this erroneous situation, you should recover SQL database using the following methods, in the given order:

Check the hardware-related reasons: You should check the error log reports to check whether the error has occurred due to malfunctioning hardware components. You can also consider swapping the hardware components to isolate the actual reason for error. You may also consider reformatting the hard disks and reinstalling the operating system to get a fresh system to work on.

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