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Cannot open user default database. Login failed

Microsoft.SQLServer.2008.Cannot_open_user_default_database._Login_failed_1_5_Rule (Rule)

Knowledge Base article:

Summary

When a client connects to an SQL Server instance without specifying a database context, the default database defined for its login is used. If that database is unavailable for any reason, the above message appears.

Note: If the login is a member of one or more Windows groups that are also defined as logins within SQL Server, the default database for one of those groups may be used. There is no reliable way to predict which of the default databases will be chosen during a login attempt. Therefore, it is important to check group membership for the login account, and then check the default database set for all groups to see that they are all available.

Resolutions

You need to either make the default database accessible, or avoid using that particular database. Your options include:

For more information about default databases, see "sp_defaultdb" in Books Online and Microsoft Knowledge Base articles 307864 and 196076.

Overrideable Parameters

Name

Description

Default Value

Enabled

Enables or disables the workflow.

Yes

Priority

Defines Alert Priority.

1

Severity

Defines Alert Severity.

2

Element properties:

TargetMicrosoft.SQLServer.2008.DBEngine
CategoryEventCollection
EnabledTrue
Event_ID4064
Event Source$Target/Property[Type="SQL!Microsoft.SQLServer.DBEngine"]/ServiceName$
Alert GenerateTrue
Alert SeverityError
Alert PriorityNormal
RemotableTrue
Alert Message
Cannot open user default database. Login failed
{0}
Event LogApplication
CommentMom2008ID='{4FFA6A6A-3E49-468E-8C4A-DF5029908802}';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.Cannot_open_user_default_database._Login_failed_1_5_Rule" Target="SQL2008Core!Microsoft.SQLServer.2008.DBEngine" Enabled="true" ConfirmDelivery="true" Remotable="true" Comment="Mom2008ID='{4FFA6A6A-3E49-468E-8C4A-DF5029908802}';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>PublisherName</XPathQuery>

              </ValueExpression>

              <Operator>Equal</Operator>

              <ValueExpression>

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

              </ValueExpression>

            </SimpleExpression>

          </Expression>

          <Expression>

            <SimpleExpression>

              <ValueExpression>

                <XPathQuery>EventDisplayNumber</XPathQuery>

              </ValueExpression>

              <Operator>Equal</Operator>

              <ValueExpression>

                <Value>4064</Value>

              </ValueExpression>

            </SimpleExpression>

          </Expression>

        </And>

      </Expression>

    </DataSource>

  </DataSources>

  <WriteActions>

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

      <Priority>1</Priority>

      <Severity>2</Severity>

      <AlertMessageId>$MPElement[Name="Microsoft.SQLServer.2008.Cannot_open_user_default_database._Login_failed_1_5_Rule.AlertMessage"]$</AlertMessageId>

      <AlertParameters>

        <AlertParameter1>Event ID: $Data/EventDisplayNumber$. $Data/EventDescription$</AlertParameter1>

      </AlertParameters>

      <Suppression>

        <SuppressionValue/>

      </Suppression>

    </WriteAction>

  </WriteActions>

</Rule>