Condividi tramite


PerformanceCondition Property

Questa caratteristica verrà rimossa a partire da una delle prossime versioni di Microsoft SQL Server. Evitare di utilizzare questa caratteristica in un nuovo progetto di sviluppo e prevedere interventi di modifica nelle applicazioni in cui è attualmente implementata.

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.

Sintassi

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)

Nota

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.

Osservazioni

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: