There is a break in the logical page chain at some level in the B-tree specified (this can happen at any level, including the leaf level). A page P_ID2 is pointed to by the next page pointer of page P_ID1, but page P_ID2's previous page pointer points to a different page, P_ID3.
HARDWARE FAILURE
Run hardware diagnostics and correct any problems. Also examine the Microsoft® Windows NT® system and application logs and the SQL Server™ error log to see if the error occurred as the result of hardware failure. Fix any hardware-related problems.
If you have persistent data corruption problems, try to swap out different hardware components to isolate the problem. Check to ensure that your system does not have write caching enabled on the disk controller. If you suspect this to be the case, contact your hardware vendor.
Finally, you might find it beneficial to switch to a completely new hardware system, including reformatting the disk drives and reinstalling the operating system.
RESTORE FROM BACKUP
If the problem is not hardware related and a known clean backup is available, restore the database from the backup.
DBCC CHECKDB
If no clean backup is available, execute DBCC CHECKDB without a repair clause to determine the extent of the corruption. DBCC CHECKDB will recommend a repair clause to use. Then, execute DBCC CHECKDB with the appropriate repair clause to repair the corruption.
CAUTION: If you are unsure what effect DBCC CHECKDB with a repair clause has on your data, contact your primary support provider before executing this statement.
Performing a repair will rebuild the index. If running DBCC CHECKDB with one of the repair clauses does not correct the problem, contact your primary support provider.
If the page is an IAM page, performing a repair will cause the IAM chain it is part of to be rebuilt to remove the page. Otherwise, the page is de-allocated.
CAUTION: This repair may cause data loss.
CAUTION: If you are unsure what effect DBCC CHECKDB with a repair clause has on your data, contact your primary support provider before executing this statement.
Target | Microsoft.SQLServer.2008.DBEngine | ||
Category | EventCollection | ||
Enabled | True | ||
Event_ID | 8936 | ||
Event Source | $Target/Property[Type="SQL!Microsoft.SQLServer.DBEngine"]/ServiceName$ | ||
Alert Generate | True | ||
Alert Severity | Error | ||
Alert Priority | Normal | ||
Remotable | True | ||
Alert Message |
| ||
Event Log | Application | ||
Comment | Mom2008ID='{EEE38169-162F-4617-8077-9980ACAADA59}';MOM2008GroupID={467ECC75-C5DA-42BD-955C-A73BBB51AF74} |
ID | Module Type | TypeId | RunAs |
---|---|---|---|
_F6DA1507_12AF_11D3_AB21_00A0C98620CE_ | DataSource | Microsoft.Windows.EventProvider | Default |
GenerateAlert | WriteAction | System.Health.GenerateAlert | Default |
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<Category>EventCollection</Category>
<DataSources>
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<ComputerName>$Target/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</ComputerName>
<LogName>Application</LogName>
<Expression>
<And>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery>PublisherName</XPathQuery>
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<Value>$Target/Property[Type="SQL!Microsoft.SQLServer.DBEngine"]/ServiceName$</Value>
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<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery>EventDisplayNumber</XPathQuery>
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<Operator>Equal</Operator>
<ValueExpression>
<Value>8936</Value>
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</SimpleExpression>
</Expression>
</And>
</Expression>
</DataSource>
</DataSources>
<WriteActions>
<WriteAction ID="GenerateAlert" TypeID="SystemHealth!System.Health.GenerateAlert">
<Priority>1</Priority>
<Severity>2</Severity>
<AlertMessageId>$MPElement[Name="Microsoft.SQLServer.2008.Table_error__B_tree_chain_linkage_mismatch.__1_5_Rule.AlertMessage"]$</AlertMessageId>
<AlertParameters>
<AlertParameter1>$Data/EventDescription$</AlertParameter1>
</AlertParameters>
<Suppression>
<SuppressionValue/>
</Suppression>
</WriteAction>
</WriteActions>
</Rule>