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Page Verify Configuration

Microsoft.SQLServer.Windows.Monitor.Database.PageVerifyConfiguration (UnitMonitor)

Monitors the Page Verify setting for the database. Note that this monitor is disabled by default. Use overrides to enable it when necessary.

Knowledge Base article:

Summary

This monitor checks the Page Verify database setting. Since this monitor is part of the overall standard requirements, an alert would be generated if the Page Verify setting does not meet the specified standard.

Configuration

The Page Verify Setting discovers damaged database pages caused by disk I/O path errors. Disk I/O path errors can be the cause of database corruption problems and are generally caused by power failures or disk hardware failures that occur at the time the page is being written to disk.

PAGE_VERIFY {CHECKSUM | TORN_PAGE_DETECTION | NONE}

Causes

A warning alert will be raised if the Page Verify option does not match the required setting. Out of the box, the monitor is configured to alert when this setting is not set to 'CHECKSUM'.

Resolutions

This issue may be resolved by:

Alternatively, if this monitor is not of concern for this database:

External

See the detailed information about this setting: ALTER DATABASE SET Options (Transact-SQL)

Overridable Parameters

Name

Description

Default Value

Alert Priority

Defines Alert Priority.

Normal

Alert Severity

Defines Alert Severity.

Warning

Enabled

Enables or disables the workflow.

No

Expected Value

Expected value of database configuration setting. To view the set of applicable values please refer to "Configuration" section of the knowledge base article of this monitor.

CHECKSUM

Generates Alerts

Defines whether the workflow generates an Alert.

Yes

Interval (seconds)

The recurring interval of time in seconds in which to run the workflow.

43200

Synchronization Time

The synchronization time specified by using a 24-hour format. May 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

Element properties:

TargetMicrosoft.SQLServer.Windows.Database
Parent MonitorMicrosoft.SQLServer.Windows.Rollup.Database.RecoveryConfiguration
CategoryConfigurationHealth
EnabledFalse
Alert GenerateTrue
Alert SeverityWarning
Alert PriorityNormal
Alert Auto ResolveTrue
Monitor TypeMicrosoft.SQLServer.Windows.MonitorType.Database.DBConfigurationStatus
RemotableTrue
AccessibilityPublic
Alert Message
MSSQL on Windows: Page Verify Configuration Error
The Page Verify setting for database "{2}" on SQL Server instance "{1}", computer "{0}" is not set according to the best practices.
RunAsDefault

Source Code:

<UnitMonitor ID="Microsoft.SQLServer.Windows.Monitor.Database.PageVerifyConfiguration" Accessibility="Public" Enabled="false" Target="SqlDiscW!Microsoft.SQLServer.Windows.Database" ParentMonitorID="Microsoft.SQLServer.Windows.Rollup.Database.RecoveryConfiguration" Remotable="true" Priority="Normal" TypeID="Microsoft.SQLServer.Windows.MonitorType.Database.DBConfigurationStatus" ConfirmDelivery="false">

  <Category>ConfigurationHealth</Category>

  <AlertSettings AlertMessage="Microsoft.SQLServer.Windows.Monitor.Database.PageVerifyConfiguration.AlertMessage">

    <AlertOnState>Warning</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>Warning</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Target/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/MachineName$</AlertParameter1>

      <AlertParameter2>$Target/Host/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/InstanceName$</AlertParameter2>

      <AlertParameter3>$Target/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.Database"]/DatabaseName$</AlertParameter3>

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="ConfigurationValueOK" MonitorTypeStateID="ConfigurationValueOK" HealthState="Success"/>

    <OperationalState ID="ConfigurationValueNotOK" MonitorTypeStateID="ConfigurationValueNotOK" 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>

    <DatabaseName>$Target/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.Database"]/DatabaseName$</DatabaseName>

    <ConfigName>PageVerify</ConfigName>

    <ExpectedValue>CHECKSUM</ExpectedValue>

    <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>

    <SqlExecTimeoutSeconds>60</SqlExecTimeoutSeconds>

    <SqlTimeoutSeconds>15</SqlTimeoutSeconds>

    <TimeoutSeconds>300</TimeoutSeconds>

    <IntervalSeconds>43200</IntervalSeconds>

    <SyncTime/>

  </Configuration>

</UnitMonitor>