Monday, January 25, 2010

Fixing “System table mismatch...” Error Message

In MS SQL Server database, there is are some specific values in the metadata structure that describe each table. These values once changed due to metadata structure corruption can result in inaccessibility of records saved in the table. Few main causes for metadata structure damage are SQL database damage, virus attack, file system damage, and human errors. Once the table is corrupt, an error message pops up on your screen describing the cause for the same. To surpass the error message and to access the database table records, you need to restore the table from an updated backup. However, if in case, the updated falls short to restore the desired data, then you will need to use an third-party MS SQL Repair tool to repair the corrupted table.

Picture a scenario, where the below error message appears when you attempt to access a database table:

“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.”

Since the error message pops up while trying to read the table records, the records stored in the table become inaccessible.


The above table error message occurs when the metadata structure describing the table gets corrupted.
The error is a “severity level 16” error message.


The resolution for the above error message is provided in the below points:

To resolve the table error, if caused due to physical damage of a system component, you will need to change the damaged system component with a new one.
The above error, if caused due to logical corruption, can be resolved by running DBCC CHECKDB command with correct repair clause. However, if the above error persists even after running the repair command, then you will need to opt for SQL Repair tool for repairing the table.

The MS SQL Recovery tool ensures repairing of tables and other database components. The tool is embedded with interactive user manual, that makes it self-explanatory without any prior technical knowledge.

SQL Recovery is a complete solution to repair corrupt SQL Server database components, including tables. Compatible with SQL Server 2008, 20005, and 2000, the SQL Database Repair software supports Windows 7, Vista, 2008, XP, 2003, 2000 operating systems. The software is downloadable from the Internet.

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