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subject: Metadata Structure Damage Results In system Table Mismatch... [print this page]


Almost all good DBMS (Database Management System) are built with some sort of metadata structure (data dictionary) and MS SQL is no exception. You can view the metadata either through the INFORMATION_SCHEMA views or varied system tables. Corruption in metadata structure results in an error message, which mostly pops up at the mounting of your database. This error message halts the database mounting process, making all its records inaccessible. For complete and easy access of database records, it is always advisable to firstly restore the database records from an updated and complete backup. However, with case studies proving that the database backup can also be easily corrupted, it is always beneficial to have a powerful sql database repair software that can overcome any database corruption scenario.

For example, you might encounter below error message while trying to access some records saved in your database:

System table mismatch: Table 'O_NAME' object ID O_ID has index id 1 in sysindexes but the status in sysobjects does not have the clustered bit set. The table will be checked as a heap.

The above error message makes your database records inaccessible.

Cause

The fundamental cause for the occurrence of the above error message is corruption or damage in metadata structure. This happens when sysindexes think that the table contains a clustered index and sysobjects think the table contains a heap index.

Metadata structure can be corrupted either due to logical or physical reasons.

Resolution

A complete resolution of the above error message can be achieved by following the below measures:

.To overcome physical damage problems, you will need to firstly check for the component that has been damaged. Change the damaged system component with the new one.

.To surmount all logical corruption issues, you will need to run DBCC CHECKDB command using appropriate repair clause.

While the logical corruption problems are resolved using DBCC CHECKDB command, there are still some possibilities that database is not repaired. In such situations, you will need to use powerful third-party SQL Database Repair tool. These SQL Repair tools can be easily understood by both technical and non-technical users.

SQL Recovery is an outstanding SQL Database Repair tool that systematically repairs SQL database built in SQL Server 2008, 2005, and 2000. Supported by Windows 7, Vista, XP, 2003, 2000 and NT, the sql repair tool recovers objects like tables, stored procedures, views and more.

by: Adishree Singh




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