Monitors the number of items in the domain controllers replication queue.
Monitors the number of items in the AD Replication queue. If this number becomes too large, there may be a delay in AD replication.
Possible causes include the following:
The domain controller is undergoing initial replication post promotion.
The domain itself has undergone a lot of changes and created a large number of objects to be replicated.
The replication topology is not optimal and needs to be reconfigured.
An application is placing a heavy load on the domain controller. This is usually caused by inefficient, CPU-intensive operations such as non-indexed queries.
The domain controller is critically low on memory.
The domain controller is under a denial-of-service attack.
View the overall system performance of the machine to determine if it needs additional resources.
Add additional domain controllers to help load-balance the load.
Ensure that there are a sufficient number of DCs in the active AD sites.
Run 'repadmin /showrepl' and 'repadmin /replsum' to ensure there are no replication failures with other domain controllers.
Target | Microsoft.Windows.Server.2012.AD.DomainControllerRole | ||
Parent Monitor | Microsoft.Windows.Server.2012.AD.PerformanceReplication.AggregateMonitor | ||
Category | Custom | ||
Enabled | True | ||
Alert Generate | True | ||
Alert Severity | MatchMonitorHealth | ||
Alert Priority | Normal | ||
Alert Auto Resolve | True | ||
Monitor Type | Microsoft.Windows.Server.2012.AD.Replication.Queue.Monitortype | ||
Remotable | False | ||
Accessibility | Public | ||
Alert Message |
| ||
RunAs | Default |
<UnitMonitor ID="Microsoft.Windows.Server.2012.AD.Performance.Replication.Queue.Monitor" Accessibility="Public" Enabled="true" Target="AD2012Core!Microsoft.Windows.Server.2012.AD.DomainControllerRole" ParentMonitorID="Microsoft.Windows.Server.2012.AD.PerformanceReplication.AggregateMonitor" Remotable="false" Priority="Normal" TypeID="Microsoft.Windows.Server.2012.AD.Replication.Queue.Monitortype" ConfirmDelivery="false">
<Category>Custom</Category>
<AlertSettings AlertMessage="Microsoft.Windows.Server.2012.AD.Performance.Replication.Queue.Monitor.AlertMessage">
<AlertOnState>Warning</AlertOnState>
<AutoResolve>true</AutoResolve>
<AlertPriority>Normal</AlertPriority>
<AlertSeverity>MatchMonitorHealth</AlertSeverity>
<AlertParameters>
<AlertParameter1>$Data[Default='']/Context/CounterName$</AlertParameter1>
<AlertParameter2>$Data[Default='']/Context/Value$</AlertParameter2>
<AlertParameter3>$Data[Default='']/Context/SampleCount$</AlertParameter3>
</AlertParameters>
</AlertSettings>
<OperationalStates>
<OperationalState ID="QueueOK" MonitorTypeStateID="QueueOK" HealthState="Success"/>
<OperationalState ID="QueueWarn" MonitorTypeStateID="QueueWarn" HealthState="Warning"/>
<OperationalState ID="QueueError" MonitorTypeStateID="QueueError" HealthState="Error"/>
</OperationalStates>
<Configuration>
<Frequency>300</Frequency>
<TimeoutSeconds>300</TimeoutSeconds>
<WarnThreshold>20</WarnThreshold>
<ErrorThreshold>50</ErrorThreshold>
<NumSamples>3</NumSamples>
</Configuration>
</UnitMonitor>