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Linux 上的 MSSQL: 資料庫引擎之頁面的預期壽命 (秒)

Microsoft.SQLServer.Linux.MonitorType.DBEngine.PageLifeExpectancy (UnitMonitorType)

Linux 上 DB 的資料庫引擎頁面的預期壽命 (秒) 監視器類型

Element properties:

RunAsMicrosoft.SQLServer.Core.RunAs.Monitoring
AccessibilityInternal
Support Monitor RecalculateFalse

Member Modules:

ID Module Type TypeId RunAs 
DS DataSource Microsoft.SQLServer.Linux.DataSource.SqlOsPerformanceReader Default
ErrorCondition ConditionDetection System.ExpressionFilter Default
NormalCondition ConditionDetection System.ExpressionFilter Default

Overrideable Parameters:

IDParameterTypeSelectorDisplay NameDescription
IntervalSecondsint$Config/IntervalSeconds$間隔 (秒)每次重複執行工作流程之間的時間間隔 (秒)。
SyncTimestring$Config/SyncTime$同步處理時間同步處理時間使用 24 小時制。可予省略。
Thresholdint$Config/Threshold$閾值收集的值會與此參數相比。
NumSamplesint$Config/NumSamples$範例數指出測出的值要違反多少次臨界值，狀態才會變更。
TimeoutSecondsint$Config/TimeoutSeconds$逾時 (秒)指定流程被關閉及標示為失敗之前，允許執行的時間。
SqlTimeoutSecondsint$Config/SqlTimeoutSeconds$資料庫連線的逾時 (秒)若工作流程無法在指定的期限之內存取資料庫，將會失敗並登錄一則事件。

Source Code:

<UnitMonitorType ID="Microsoft.SQLServer.Linux.MonitorType.DBEngine.PageLifeExpectancy" Accessibility="Internal" RunAs="SqlCoreLib!Microsoft.SQLServer.Core.RunAs.Monitoring">

  <MonitorTypeStates>

    <MonitorTypeState ID="Normal"/>

    <MonitorTypeState ID="Error"/>

  </MonitorTypeStates>

  <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="InstanceName" 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="IntervalSeconds" type="xsd:int"/>

    <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="Threshold" type="xsd:integer"/>

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

    <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="SqlTimeoutSeconds" type="xsd:int"/>

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

  </Configuration>

  <OverrideableParameters>

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

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

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

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

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

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

  </OverrideableParameters>

  <MonitorImplementation>

    <MemberModules>

      <DataSource ID="DS" TypeID="Microsoft.SQLServer.Linux.DataSource.SqlOsPerformanceReader">

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

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

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

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

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

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

        <ObjectName>$Target/Property[Type="SqlCoreLib!Microsoft.SQLServer.Core.DBEngine"]/PerformanceCounterObject$:Buffer Manager</ObjectName>

        <PerfInstanceName/>

        <PerfParams>

          <NameOfHandler>SqlOsPerfCounterReaderMonitor</NameOfHandler>

          <PerformanceCounterObject>$Config/PerformanceCounterObject$</PerformanceCounterObject>

          <CounterConfig>

            <CategoryName>Buffer Manager</CategoryName>

            <CounterName>Page life expectancy</CounterName>

            <BaseCounterName/>

            <InstanceSelector>2</InstanceSelector>

            <NeedsPrefix>1</NeedsPrefix>

            <InstanceIndex>0</InstanceIndex>

          </CounterConfig>

        </PerfParams>

      </DataSource>

      <ConditionDetection ID="ErrorCondition" TypeID="System!System.ExpressionFilter">

        <Expression>

          <SimpleExpression>

            <ValueExpression>

              <XPathQuery Type="Double">Property[@Name='CounterValue']</XPathQuery>

            </ValueExpression>

            <Operator>Less</Operator>

            <ValueExpression>

              <Value Type="Double">$Config/Threshold$</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

        <SuppressionSettings>

          <MatchCount>$Config/NumSamples$</MatchCount>

          <SampleCount>$Config/NumSamples$</SampleCount>

        </SuppressionSettings>

      </ConditionDetection>

      <ConditionDetection ID="NormalCondition" TypeID="System!System.ExpressionFilter">

        <Expression>

          <SimpleExpression>

            <ValueExpression>

              <XPathQuery Type="Double">Property[@Name='CounterValue']</XPathQuery>

            </ValueExpression>

            <Operator>GreaterEqual</Operator>

            <ValueExpression>

              <Value Type="Double">$Config/Threshold$</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

      </ConditionDetection>

    </MemberModules>

    <RegularDetections>

      <RegularDetection MonitorTypeStateID="Normal">

        <Node ID="NormalCondition">

          <Node ID="DS"/>

        </Node>

      </RegularDetection>

      <RegularDetection MonitorTypeStateID="Error">

        <Node ID="ErrorCondition">

          <Node ID="DS"/>

        </Node>

      </RegularDetection>

    </RegularDetections>

  </MonitorImplementation>

</UnitMonitorType>