The Query Processor is using a large but limited memory stack when optimizing queries. In some extreme situations the stack size may become a limit for a given very large query--for example, a query containing an inlist with 100,000 constants.
The Query Processor is using a large but limited memory stack when optimizing queries. In some extreme situations the stack size may become a limit for a given very large query--for example, a query containing an inlist with 100,000 constants.
Simplify the query to avoid this problem. For example, in the case of an extremely large inlist use temporary table or table variable to store the constants, and rewrite the query to use this variable or temporary table instead.
Name | Description | Default Value |
Enabled |
| Yes |
Generates Alerts |
| Yes |
Priority |
| 1 |
Severity |
| 2 |
Target | Microsoft.SQLServer.2014.DBEngine | ||
Category | EventCollection | ||
Enabled | True | ||
Event_ID | 8621 | ||
Event Source | $Target/Property[Type="SQL2014Core!Microsoft.SQLServer.2014.DBEngine"]/ServiceName$ | ||
Alert Generate | True | ||
Alert Severity | Error | ||
Alert Priority | Normal | ||
Remotable | True | ||
Alert Message |
| ||
Event Log | Application | ||
Comment | Mom2014ID='{100AE678-D3DD-4FFD-B3E5-F9E1B03229E7}';MOM2014GroupID={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 |
<Rule ID="Microsoft.SQLServer.2014.Internal_Query_Processor_Error__The_query_processor_ran_out_of_stack_space_during_query_optimization_1_5_Rule" Target="SQL2014Core!Microsoft.SQLServer.2014.DBEngine" Enabled="true" ConfirmDelivery="true" Remotable="true" Comment="Mom2014ID='{100AE678-D3DD-4FFD-B3E5-F9E1B03229E7}';MOM2014GroupID={467ECC75-C5DA-42BD-955C-A73BBB51AF74}">
<Category>EventCollection</Category>
<DataSources>
<DataSource ID="_F6DA1507_12AF_11D3_AB21_00A0C98620CE_" Comment="{F6DA1507-12AF-11D3-AB21-00A0C98620CE}" TypeID="Windows!Microsoft.Windows.EventProvider">
<ComputerName>$Target/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</ComputerName>
<LogName>Application</LogName>
<Expression>
<And>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery>PublisherName</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value>$Target/Property[Type="SQL2014Core!Microsoft.SQLServer.2014.DBEngine"]/ServiceName$</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery>EventDisplayNumber</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value>8621</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
</And>
</Expression>
</DataSource>
</DataSources>
<WriteActions>
<WriteAction ID="GenerateAlert" TypeID="SystemHealth!System.Health.GenerateAlert">
<Priority>1</Priority>
<Severity>2</Severity>
<AlertMessageId>$MPElement[Name="Microsoft.SQLServer.2014.Internal_Query_Processor_Error__The_query_processor_ran_out_of_stack_space_during_query_optimization_1_5_Rule.AlertMessage"]$</AlertMessageId>
<AlertParameters>
<AlertParameter1>$Data/EventDescription$</AlertParameter1>
</AlertParameters>
<Suppression>
<SuppressionValue/>
</Suppression>
</WriteAction>
</WriteActions>
</Rule>