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KHI: The database copy is experiencing an unusually high log generation checkpoint depth for a sustained period of at least 15 minutes.

_133a8a56_6b9c_44e0_886c_40b6a07d74c2_ (UnitMonitor)

Knowledge Base article:

External Knowledge Sources

For more information, see the respective topic at the Microsoft Exchange Server TechCenter

Element properties:

TargetMicrosoft.Exchange.2010.Mailbox.DatabaseCopyCorruption
Parent MonitorSystem.Health.AvailabilityState
CategoryPerformanceHealth
EnabledTrue
Alert GenerateFalse
Alert Auto ResolveTrue
Monitor TypeCorrelation.Performance.ConsecutiveSamplesThreshold
RemotableTrue
AccessibilityPublic
RunAsDefault
CommentActionable='False';Urgent='True';EscalationTeam='ESE'

Source Code:

<UnitMonitor ID="_133a8a56_6b9c_44e0_886c_40b6a07d74c2_" Target="Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption" Enabled="onEssentialMonitoring" Accessibility="Public" ParentMonitorID="SystemHealth!System.Health.AvailabilityState" TypeID="Correlation.Performance.ConsecutiveSamplesThreshold" Comment="Actionable='False';Urgent='True';EscalationTeam='ESE'">

  <Category>PerformanceHealth</Category>

  <OperationalStates>

    <OperationalState ID="HMPerfMonitorUnderOpState_6EB1E154_412C_4066_9638_C3C8DF9DE431" MonitorTypeStateID="UnderThreshold" HealthState="Success"/>

    <OperationalState ID="HMPerfMonitorOverOpState_DC569681_955C_44A0_9715_466E2F175F95" MonitorTypeStateID="OverThreshold" HealthState="Error"/>

  </OperationalStates>

  <Configuration>

    <MonitorType>KHI</MonitorType>

    <VoteWeight>-1</VoteWeight>

    <ComputerName>.</ComputerName>

    <CounterName>Log Generation Checkpoint Depth</CounterName>

    <ObjectName>MSExchange Database ==&gt; Instances</ObjectName>

    <InstanceName>$Target/Property[Type='Microsoft.Exchange.2010.Component']/InstanceName$</InstanceName>

    <AllInstances>false</AllInstances>

    <Frequency>900</Frequency>

    <Threshold>1000</Threshold>

    <Direction>greater</Direction>

    <NumSamples>2</NumSamples>

  </Configuration>

</UnitMonitor>