PerformanceCondition Property

發行項
12/15/2008

未來的 Microsoft SQL Server 發行版本將不再提供此功能。請避免在新的開發工作中使用此功能，並計劃修改目前使用此功能的應用程式。

The PerformanceCondition property specifies a Microsoft Windows Performance Monitor counter, a comparison operator and value, and enables raising a Microsoft® SQL Server™ 2000 Agent alert based on system activity.

語法

object
.PerformanceCondition [=value]

Parts

object
Expression that evaluates to an object in the Applies To list

value
String that specifies a Windows Performance Monitor object, counter, and instance as described in Remarks

Data Type

String

Modifiable

Read/write

Prototype (C/C++)

HRESULT GetPerformanceCondition(SQLDMO_LPBSTR pRetVal)
HRESULT SetPerformanceCondition(SQLDMO_LPCSTR NewValue)

附註：
SQL-DMO strings are always returned as OLE BSTR objects. A C/C++ application obtains a reference to the string. The application must release the reference using SysFreeString.

備註

When setting the PerformanceCondition property, value uses the syntax:

        ObjectName

        CounterName

        Instance

        ComparisonOp

        CompValue

Part	Description
ObjectName	Name of a monitored Microsoft SQL Server object
CounterName	Name of a counter exposed by the object
Instance	Name of an instance of the counter
ComparisonOp	One of the relational operators =, >, or <
CompValue	Numeric value compared

For example, to create an alert raised when the average wait time for an extent lock rises above 1 second (1,000 milliseconds), set the PerformanceCondition property using the string:

SQLServer:Locks|Average Wait Time (ms)|Extent|>|1000

Many SQL Server Performance Monitor counters do not define instance parameters. When an instance parameter is not applicable, indicate that no instance is selected using an empty Instance part in the value string, as in:

SQLServer:Access Methods|Page Splits/sec||>|50

For more information about SQL Server objects exposing Performance Monitor counters, see Using SQL Server Objects.

Applies To:

Alert Object

共用方式為