Availability Replicas Data Synchronization
This monitor rolls up the data synchronization state of all availability replicas in the availability group and check whether any availability replica’s synchronization is not operational. The monitor is unhealthy if any of availability replica’s data synchronization state is NOT SYNCHRONIZING. The monitor is healthy if none of availability replica’s data synchronization state is NOT SYNCHRONIZING.
In this availability group, at least one secondary replica has a NOT SYNCHRONIZING synchronization state and is not receiving data from the primary replica.
Find the availability replica with NOT SYNCHRONIZING state using availability replica monitor state and resolve the issue at the availability replica.
Name | Description | Default Value |
Enabled | Enables or disables the workflow. | Yes |
Generates Alerts | Defines whether the workflow generates an Alert. | No |
Interval (seconds) | The recurring interval of time in seconds in which to run the workflow. | 900 |
Synchronization Time | The synchronization time is specified by using a 24-hour format. Can be omitted. |
|
Timeout (seconds) | Specifies the time the workflow is allowed to run before being closed and marked as failed. | 300 |
Timeout for query execution (seconds) | The workflow will fail and register an event, if the query execution takes longer than the specified period. | 60 |
Timeout for database connection (seconds) | The workflow will fail and register an event if it cannot access the database during the specified period. | 15 |
Target | Microsoft.SQLServer.Windows.AvailabilityGroupHealth |
Parent Monitor | System.Health.AvailabilityState |
Category | AvailabilityHealth |
Enabled | True |
Alert Generate | False |
Alert Auto Resolve | True |
Monitor Type | Microsoft.SQLServer.Windows.MonitorType.AlwaysOnSystemPolicy |
Remotable | True |
Accessibility | Public |
RunAs | Default |
<UnitMonitor ID="Microsoft.SQLServer.Windows.Monitor.AvailabilityGroupHealth.AvailabilityReplicasSynchronizing" Accessibility="Public" Enabled="true" Target="SqlDiscW!Microsoft.SQLServer.Windows.AvailabilityGroupHealth" ParentMonitorID="Health!System.Health.AvailabilityState" Remotable="true" Priority="Normal" TypeID="Microsoft.SQLServer.Windows.MonitorType.AlwaysOnSystemPolicy" ConfirmDelivery="false">
<Category>AvailabilityHealth</Category>
<OperationalStates>
<OperationalState ID="Success" MonitorTypeStateID="HealthState" HealthState="Success"/>
<OperationalState ID="Critical" MonitorTypeStateID="ErrorState" HealthState="Warning"/>
</OperationalStates>
<Configuration>
<MachineName>$Target/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/MachineName$</MachineName>
<NetbiosComputerName>$Target/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/NetbiosComputerName$</NetbiosComputerName>
<InstanceName>$Target/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/InstanceName$</InstanceName>
<ConnectionString>$Target/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/ConnectionString$</ConnectionString>
<InstanceVersion>$Target/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/Version$</InstanceVersion>
<InstanceEdition>$Target/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/Edition$</InstanceEdition>
<MonitoringType>$Target/Host/Property[Type="SqlDiscW!Microsoft.SQLServer.Windows.DBEngine"]/MonitoringType$</MonitoringType>
<PolicyName>AlwaysOnAgReplicasDataSynchronizationHealthPolicy</PolicyName>
<BagKey>1-$Target/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.AvailabilityGroupHealth"]/AvailabilityGroupName$</BagKey>
<SqlExecTimeoutSeconds>60</SqlExecTimeoutSeconds>
<SqlTimeoutSeconds>15</SqlTimeoutSeconds>
<TimeoutSeconds>300</TimeoutSeconds>
<IntervalSeconds>900</IntervalSeconds>
<SyncTime/>
</Configuration>
</UnitMonitor>