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Buffers: Library cache

ozsoft.sap.Monitor.Oracle.Buffers.LibraryCache (UnitMonitor)

Library cache hit ratio

Knowledge Base article:

Summary

Library cache

Configuration

N/A

Causes

The library cache hit ratio fell below the configured threshold

Resolutions

Increase the size of the shared pool in which the library cache resides until the V$LIBRARYCACHE.RELOADS value is near 0. This is done by increasing the value of the init<DBSID>.ora parameter SHARED_POOL_SIZE. The application should use identical SQL statements whenever possible

Additional

N/A

External

For more information, see Database Parameters and the Oracle documentation

Element properties:

Targetozsoft.sap.Oracle
Parent MonitorSystem.Health.PerformanceState
CategoryOperations
EnabledFalse
Alert GenerateTrue
Alert SeverityMatchMonitorHealth
Alert PriorityNormal
Alert Auto ResolveTrue
Monitor Typeozsoft.sap.CCMSMetricMonitorType2
RemotableTrue
AccessibilityPublic
Alert Message
Buffers: Library cache
{0} : {1} has a value {2}
RunAsDefault

Source Code:

<UnitMonitor ID="ozsoft.sap.Monitor.Oracle.Buffers.LibraryCache" Accessibility="Public" Enabled="false" Target="ozsoft.sap.Oracle" ParentMonitorID="Health!System.Health.PerformanceState" Remotable="true" Priority="Normal" TypeID="ozsoft.sap.CCMSMetricMonitorType2" ConfirmDelivery="false">

  <Category>Operations</Category>

  <AlertSettings AlertMessage="ozsoft.sap.Monitor.Oracle.Buffers.LibraryCache.AlertMessageResourceID">

    <AlertOnState>Warning</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>MatchMonitorHealth</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Data/Context/ObjectName$</AlertParameter1>

      <AlertParameter2>$Data/Context/CounterName$</AlertParameter2>

      <AlertParameter3>$Data/Context/Value$</AlertParameter3>

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="Under" MonitorTypeStateID="SDKMetricUnderLowThreshold" HealthState="Error"/>

    <OperationalState ID="Between" MonitorTypeStateID="SDKMetricUnderHighOverLowThreshold" HealthState="Warning"/>

    <OperationalState ID="Over" MonitorTypeStateID="SDKMetricOverHighThreshold" HealthState="Success"/>

  </OperationalStates>

  <Configuration>

    <CounterName>Library cache</CounterName>

    <ObjectName>Buffers</ObjectName>

    <Frequency>60</Frequency>

    <HighThreshold>95</HighThreshold>

    <LowThreshold>80</LowThreshold>

  </Configuration>

</UnitMonitor>