PerformanceCondition Property

Diese Funktion wird in zukünftigen Versionen von Microsoft SQL Server nicht mehr bereitgestellt. Verwenden Sie diese Funktion beim Entwickeln neuer Anwendungen nicht, und planen Sie das Ändern von Anwendungen, in denen es zurzeit verwendet wird.

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.

Syntax

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)

Hinweis
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.

Hinweise

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