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Failed to create AppDomain

Microsoft.SQLServer.2008.Failed_to_create_AppDomain_5_Rule (Rule)

Knowledge Base article:

Summary

An application tried to create an application domain, but failed. This may be caused when there is not enough memory to start the application domain.

Causes

This error occurs when there is not enough memory available to create a new AppDomain.

Resolutions

Verify that hardware is performing correctly.

Check Windows system and application logs to identify errors related to system stress or memory.

Increase the available memory. Consider the following solutions to increase available memory:

External

For more information see "Using AWE" in SQL Server 2008 Books Online.

For more information see "Using the SQL Server Service Startup Options" in SQL Server 2008 Books Online.

Element properties:

TargetMicrosoft.SQLServer.2008.DBEngine
CategoryEventCollection
EnabledTrue
Event_ID6517
Event Source$Target/Property[Type="SQL!Microsoft.SQLServer.DBEngine"]/ServiceName$
Alert GenerateTrue
Alert SeverityError
Alert PriorityNormal
RemotableTrue
Alert Message
Failed to create AppDomain
{0}
Event LogApplication
CommentMom2008ID='{F5B309A3-6BDF-4E0E-B928-D00493ABBFC4}';MOM2008GroupID={467ECC75-C5DA-42BD-955C-A73BBB51AF74}

Member Modules:

ID Module Type TypeId RunAs 
_F6DA1507_12AF_11D3_AB21_00A0C98620CE_ DataSource Microsoft.Windows.EventProvider Microsoft.SQLServer.SQLDefaultAccount
GenerateAlert WriteAction System.Health.GenerateAlert Default

Source Code:

<Rule ID="Microsoft.SQLServer.2008.Failed_to_create_AppDomain_5_Rule" Target="SQL2008Core!Microsoft.SQLServer.2008.DBEngine" Enabled="true" ConfirmDelivery="true" Remotable="true" Comment="Mom2008ID='{F5B309A3-6BDF-4E0E-B928-D00493ABBFC4}';MOM2008GroupID={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" RunAs="SQL!Microsoft.SQLServer.SQLDefaultAccount">

      <ComputerName>$Target/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</ComputerName>

      <LogName>Application</LogName>

      <Expression>

        <And>

          <Expression>

            <SimpleExpression>

              <ValueExpression>

                <XPathQuery>EventDisplayNumber</XPathQuery>

              </ValueExpression>

              <Operator>Equal</Operator>

              <ValueExpression>

                <Value>6517</Value>

              </ValueExpression>

            </SimpleExpression>

          </Expression>

          <Expression>

            <SimpleExpression>

              <ValueExpression>

                <XPathQuery>PublisherName</XPathQuery>

              </ValueExpression>

              <Operator>Equal</Operator>

              <ValueExpression>

                <Value>$Target/Property[Type="SQL!Microsoft.SQLServer.DBEngine"]/ServiceName$</Value>

              </ValueExpression>

            </SimpleExpression>

          </Expression>

        </And>

      </Expression>

    </DataSource>

  </DataSources>

  <WriteActions>

    <WriteAction ID="GenerateAlert" TypeID="SystemHealth!System.Health.GenerateAlert">

      <Priority>1</Priority>

      <Severity>2</Severity>

      <AlertMessageId>$MPElement[Name="Microsoft.SQLServer.2008.Failed_to_create_AppDomain_5_Rule.AlertMessage"]$</AlertMessageId>

      <AlertParameters>

        <AlertParameter1>$Data/EventDescription$</AlertParameter1>

      </AlertParameters>

      <Suppression>

        <SuppressionValue/>

      </Suppression>

    </WriteAction>

  </WriteActions>

</Rule>