SQL Server 2005 provides various options to control the growing size of the database. One such option is to create a filegroup. TA filegroup is a logical storage unit which is used to contain the database objects that reference to a file system file or multiple files. In a filegroup, additional disk drives are allocated to support the estimated growth of the database. Then, the additional files are shifted to these filegroups to spread the I/O over additional disks. Having said that, these filegroups-supported databases can get corrupt due to various reasons. In such cases, you should consider taking appropriate corrective measures to resolve the issue. However, if the measures are not sufficient then you should use a third-party SQL repair software to repair the corrupted database. Consider a scenario wherein you have received the following error message when you open the SQL Server 2005 database: “Unable to process index I_NAME of table O_NAME because filegroup F_NAME is invalid.” This message suggests that the index cannot be checked as one of the filegroup IDs does not exist, which is stored in the metadata of the index. Cause:
The root cause of this error message is that the filegroup IDs stored in the metadata for an index do not exist so that index can not be checked. It may be possible that the database is corrupt. Resolution:
To resolve this error message, you should perform the following methods preferably in the given order: Check for hardware issue: You should run hardware diagnostics and check the error logs to ascertain whether this error has resulted because of any hardware issues. Restore from backup: You should check if the backup of the database is updated and clean. If yes, then restore the database from its backup. Run DBCC CHECKDB: You should run DBCC CHECKDB firstly without using the repair clause and then with the repair clause after determining the extent of the corruption. The aforementioned methods will be able to resolve the issue. However, if the error is not solved then you should use a third-party MS SQL repair software to repair SQL database. Such tools are able to perform repair SQL database without overwriting the original content. Stellar Phoenix SQL Recovery software is an ms sql recovery software that enables you to perform SQL repair of the databases created in MS SQL Server 2000, 2005, and 2008. It is able to repair various components of corrupted SQL databases such as rules, defaults, stored procedures, triggers, etc. This SQL repair tool also recovers database constraints such as primary key, unique key, foreign key, etc. It is compatible with Windows 7, Vista, Server 2003, XP, and 2000.