Fixing "Extra Or Invalid Key" Error Message

The information related to records in MS SQL Serverno operations (add or update) can be performed on
database table is either saved in clustered orthat table.
non-clustered index. In clustered index, the data rows inCause
the table are stored with their unique key value.The above table error message appears when the
However, in non-clustered index, every data row in theindex row in the non-clustered index does not match
SQL Server table consists of exactly one matchingany data row in the table that you are accessing. This
index row. The problem mainly arises when thescenario occurs when the database is logically or
non-clustered index consists of an index row, whichphysically damaged.
does not match any data row in the table. ThisResolution
situation occurs when the database is corrupted orThe resolution for the above error message is repair
damaged. In such situations, the user receives a tableof corrupted MS SQL Server database. To
error message that does not allows him/her to accesssystematically do so, you need to follow the below
the data saved in the table. To access the table datameasures:
post SQL database corruption, the user needs to1. Change the damaged physical system component
restore the data from an updated backup. However, ifwith a brand new component.
no backup is available or backup falls short of restoring2. Run DBCC CHECKDB command with repair clause
the required data, the user needs to repair thein case of logical corruption of database.
database using SQL Repair application.3. If the problem persists, then you need to opt for
Consider the below error message that appears wheneffective SQL Repair software. Such sql database
you try to access the data saved in your SQL Serverrepair tools employ advanced repair techniques and
table:bring the database in reusable state.
"Table error: Database 'DBNAME', indexSQL Recovery repairs and restores any logically
'OBJNAME.INDNAME' (ID O_ID) (index ID I_ID). Extradamaged database built in MS SQL Server 2008,
or invalid key for the keys"20005, and 2000. The repair sql tool repairs the
After the above error message, the records stored indatabase in such a way that the original database
the database table become inaccessible. Furthermore,remains unaffected.