Thursday, November 11, 2010

Rectifying Error 8921 in SQL Server

Rectifying Error 8921 in SQL Server
MS SQL Server provides the DBCC statements that are used to check and fix the databases for physical and logical consistency. There are various types of DBCC statements that you can use for the any particular purpose. However, at times these commands are not able to perform. The reason behind is that these database may have corrupted because of various reasons such as virus infections, hardware issues, human errors, etc. In such cases, you should use a third-party SQL repairsoftware to repair SQL database.
Consider a scenario wherein you are working on an SQL Server 2000 database. In this, you use the DBCC CHECKTABLE command on a particular table to make it more scalable and achieve parallelism. However, the command failed to execute. An error message is displayed, that is:
“CHECKTABLE terminated. A failure was detected while collecting facts. Possibly tempdb out of space or a system table is inconsistent. Check previous errors.”
The root cause of this error message is that the internal query that was used by DBCC failed to deliver the desired result. It may be possible that the tempdb database has gone out of space or there is an inconsistent system table.
To resolve this error message, you should perform the following methods, preferably in the given order:
Check for hardware issues: You should run hardware diagnostics and check whether the issue is raised because of any malfunctioning hardware component. You can also check the error logs, or swap the hardware components to zero in on the source of the issue. Also, you can also consider reformatting the disks and reinstalling the operating system.
Restore from backup: You should check if the backup is updated and clean. If yes, then you should restore the database from its backup.
Run DBCC CHECKDB: You should run DBCC CHECKDB first without a repair clause, and then with the repair clause after determining the extent of corruption.
The aforementioned methods will be able to resolve the error message and you can access the database properly. However, if it is not so then you should use a third-party SQL data recovery software to repair the corrupted database. Such read-only tools are able to repair SQL databases by using fast yet sophisticated scanning algorithms thereby ensuring safe recovery of the corrupted database.
Stellar Phoenix SQL Recovery is an MDF repair software that repairs SQL database from all instances of corruption. It supports SQL repair of the corrupt databases created in SQL Server 2000, 2005, and 2008. This MS SQL repair tool is capable of repairing various database objects such as stored procedures, queries, triggers, database constraints, user defined data types, etc. It is compatible with Windows 7, Vista, Server 2003, XP, and Server 2000.
My name is Mark Willium, I have done Ph.D in computer science and currently doing research on how to recover and repair corrupted sql database. During research found many repair & recovery software for SQL database, some of them are sql server recovery, mdf recovery, sql repair,mdf repair and many more.

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