SQL User Connections Performance

Microsoft.SQLServer.2012.DBEngine.UserConnectionsBaselineMonitor (UnitMonitor)

This monitor analysis the user connections to the SQL database engine over time, and calculates a baseline over the initial learning period.

Knowledge Base article:

Summary

This monitor analysis the user connections to the SQL database engine over time, and calculates a baseline over the initial learning period. A warning or error alert will be raised if the user connections figure moves outside the baseline that has been captured.

Causes

An increase or decrease in the normal connections to the server could indicate a problem with SQL or some network infrastructure.

Resolutions

Check for other alerts from SQL Server or specific databases on the server:

SQL Alerts

Look at the key performance metrics for SQL that have been collected:

SQL Performance

Overrideable Parameters

Name	Description	Default Value
Alert Priority	Defines Alert Priority.	Normal
Alert Severity	Defines Alert Severity.	MatchMonitorHealth
Enabled	Enables or disables the workflow.	No
Generates Alerts	Defines whether the workflow generates an Alert.	Yes
Inner Sensitivity	Inner Sensitivity Value for the baseline envelope	2.81
Outer Sensitivity	Outer Sensitivity Value for the baseline envelope	3.31

Element properties:

Target

Microsoft.SQLServer.2012.DBEngine

Parent Monitor

System.Health.PerformanceState

Category

PerformanceHealth

Enabled

False

Alert Generate

True

Alert Severity

MatchMonitorHealth

Alert Priority

Normal

Alert Auto Resolve

True

Monitor Type

System.Performance.TwoStateAboveBaseliningMonitorWithoutCompression

Remotable

True

Accessibility

Public

Alert Message

SQL User Connections Abnormal

SQL user connections for instance {0} running on computer {1} are abnormal

RunAs

Default

Source Code:

<UnitMonitor ID="Microsoft.SQLServer.2012.DBEngine.UserConnectionsBaselineMonitor" Accessibility="Public" Enabled="false" Target="SQL2012Core!Microsoft.SQLServer.2012.DBEngine" ParentMonitorID="SystemHealth!System.Health.PerformanceState" Remotable="true" Priority="Normal" TypeID="SystemPerf!System.Performance.TwoStateAboveBaseliningMonitorWithoutCompression" ConfirmDelivery="false">

  <Category>PerformanceHealth</Category>

  <AlertSettings AlertMessage="Microsoft.SQLServer.2012.DBEngine.UserConnectionsBaselineMonitor.AlertMessage">

    <AlertOnState>Warning</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>MatchMonitorHealth</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Target/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</AlertParameter1>

      <AlertParameter2>$Target/Property[Type="SQL!Microsoft.SQLServer.ServerRole"]/InstanceName$</AlertParameter2>

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="BelowNormal" MonitorTypeStateID="Below" HealthState="Success"/>

    <OperationalState ID="AboveNormal" MonitorTypeStateID="Above" HealthState="Warning"/>

  </OperationalStates>

  <Configuration>

    <SignatureID>{D56436DB-41F0-4958-A8F0-9BC941674B4B}</SignatureID>

    <DataSourceSettings>

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

      <ObjectName>$Target/Property[Type="SQL!Microsoft.SQLServer.DBEngine"]/PerformanceCounterObject$:General Statistics</ObjectName>

      <CounterName>User Connections</CounterName>

      <InstanceName/>

      <AllInstances>false</AllInstances>

      <Frequency>300</Frequency>

    </DataSourceSettings>

    <LearningAndBaseliningSettings>

      <BusinessCycleLengthUnit>Week</BusinessCycleLengthUnit>

      <BusinessCycleLengthInGivenUnit>1</BusinessCycleLengthInGivenUnit>

      <LearningType>Continuous</LearningType>

      <Offset1>3</Offset1>

      <Offset2>3</Offset2>

      <Offset3>3</Offset3>

      <LearningRate>2.3333333333333335</LearningRate>

      <InitialNoAlertPeriodInBizCycles>1</InitialNoAlertPeriodInBizCycles>

      <OuterSensitivity>3.31</OuterSensitivity>

      <InnerSensitivity>2.81</InnerSensitivity>

    </LearningAndBaseliningSettings>

    <SignatureCollectionSettings>

      <DBUpdatePeriodInSeconds>300</DBUpdatePeriodInSeconds>

    </SignatureCollectionSettings>

  </Configuration>

</UnitMonitor>