MSSQL on Windows: Virtual Log File Count Provider

Microsoft.SQLServer.Windows.DataSource.VLFCountPerfOptimized (DataSourceModuleType)

SQL Virtual Log File Count Provider on Windows

Element properties:

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Type	DataSourceModuleType
Isolation	Any
Accessibility	Internal
RunAs	Microsoft.SQLServer.Core.RunAs.Monitoring
OutputType	System.Performance.Data

Member Modules:

ID	Module Type	TypeId	RunAs
DS	DataSource	Microsoft.SQLServer.Windows.DataSource.VLFCount	Default
OptimizedFilter	ConditionDetection	System.Performance.OptimizedCollectionFilter	Default
PerfMapper	ConditionDetection	System.Performance.DataGenericMapper	Default

Overrideable Parameters:

ID	ParameterType	Selector	Display Name	Description
IntervalSeconds	int	$Config/IntervalSeconds$	Interval (seconds)	The recurring interval of time in seconds in which to run the workflow.
SyncTime	string	$Config/SyncTime$	Synchronization Time	The synchronization time specified by using a 24-hour format. May be omitted.
TimeoutSeconds	int	$Config/TimeoutSeconds$	Timeout (seconds)	Specifies the time the workflow is allowed to run before being closed and marked as failed.
SqlExecTimeoutSeconds	int	$Config/SqlExecTimeoutSeconds$	Timeout for query execution (seconds)	The workflow will fail and register an event, if the query execution takes longer than the specified period.
SqlTimeoutSeconds	int	$Config/SqlTimeoutSeconds$	Timeout for database connection (seconds)	The workflow will fail and register an event, if it cannot access the database during the specified period.

Source Code:

<DataSourceModuleType ID="Microsoft.SQLServer.Windows.DataSource.VLFCountPerfOptimized" Accessibility="Internal" RunAs="SqlCoreLib!Microsoft.SQLServer.Core.RunAs.Monitoring">

  <Configuration>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="MachineName" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="NetbiosComputerName" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="InstanceName" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="DatabaseName" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="ConnectionString" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="InstanceVersion" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="InstanceEdition" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="MonitoringType" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="IntervalSeconds" type="xsd:integer"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="SyncTime" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="TimeoutSeconds" type="xsd:int"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="SqlExecTimeoutSeconds" type="xsd:int"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="SqlTimeoutSeconds" type="xsd:int"/>

  </Configuration>

  <OverrideableParameters>

    <OverrideableParameter ID="IntervalSeconds" ParameterType="int" Selector="$Config/IntervalSeconds$"/>

    <OverrideableParameter ID="SyncTime" ParameterType="string" Selector="$Config/SyncTime$"/>

    <OverrideableParameter ID="TimeoutSeconds" ParameterType="int" Selector="$Config/TimeoutSeconds$"/>

    <OverrideableParameter ID="SqlExecTimeoutSeconds" ParameterType="int" Selector="$Config/SqlExecTimeoutSeconds$"/>

    <OverrideableParameter ID="SqlTimeoutSeconds" ParameterType="int" Selector="$Config/SqlTimeoutSeconds$"/>

  </OverrideableParameters>

  <ModuleImplementation>

    <Composite>

      <MemberModules>

        <DataSource ID="DS" TypeID="Microsoft.SQLServer.Windows.DataSource.VLFCount">

          <MachineName>$Config/MachineName$</MachineName>

          <NetbiosComputerName>$Config/NetbiosComputerName$</NetbiosComputerName>

          <InstanceName>$Config/InstanceName$</InstanceName>

          <DatabaseName>$Config/DatabaseName$</DatabaseName>

          <ConnectionString>$Config/ConnectionString$</ConnectionString>

          <InstanceVersion>$Config/InstanceVersion$</InstanceVersion>

          <InstanceEdition>$Config/InstanceEdition$</InstanceEdition>

          <MonitoringType>$Config/MonitoringType$</MonitoringType>

          <IntervalSeconds>$Config/IntervalSeconds$</IntervalSeconds>

          <SyncTime>$Config/SyncTime$</SyncTime>

          <TimeoutSeconds>$Config/TimeoutSeconds$</TimeoutSeconds>

          <SqlExecTimeoutSeconds>$Config/SqlExecTimeoutSeconds$</SqlExecTimeoutSeconds>

          <SqlTimeoutSeconds>$Config/SqlTimeoutSeconds$</SqlTimeoutSeconds>

        </DataSource>

        <ConditionDetection ID="PerfMapper" TypeID="SystemPerf!System.Performance.DataGenericMapper">

          <ObjectName>SQL Database</ObjectName>

          <CounterName>DB Virtual Log Files</CounterName>

          <InstanceName/>

          <Value>$Data/Property[@Name='VLFCount']$</Value>

        </ConditionDetection>

        <ConditionDetection ID="OptimizedFilter" TypeID="SystemPerf!System.Performance.OptimizedCollectionFilter">

          <Tolerance>1</Tolerance>

          <ToleranceType>Absolute</ToleranceType>

          <MaximumSampleSeparation>4</MaximumSampleSeparation>

          <SamplingPeriodInSeconds>$Config/IntervalSeconds$</SamplingPeriodInSeconds>

        </ConditionDetection>

      </MemberModules>

      <Composition>

        <Node ID="OptimizedFilter">

          <Node ID="PerfMapper">

            <Node ID="DS"/>

          </Node>

        </Node>

      </Composition>

    </Composite>

  </ModuleImplementation>

  <OutputType>SystemPerf!System.Performance.Data</OutputType>

</DataSourceModuleType>