Application.SubscriptionThrottle Property

Articolo
12/15/2008

Gets or sets the maximum number of scheduled subscriptions that can be processed during a single generator quantum.

Spazio dei nomi: Microsoft.SqlServer.Management.Nmo
Assembly : Microsoft.SqlServer.Smo (in microsoft.sqlserver.smo.dll)

Sintassi

'Dichiarazione
Public Property SubscriptionThrottle As Integer

public int SubscriptionThrottle { get; set; }

public:
property int SubscriptionThrottle {
    int get ();
    void set (int value);
}

/** @property */
public int get_SubscriptionThrottle ()

/** @property */
public void set_SubscriptionThrottle (int value)

public function get SubscriptionThrottle () : int

public function set SubscriptionThrottle (value : int)

Valore proprietà

An Int32 value that specifies the maximum number of scheduled subscriptions that can be processed during a single generator quantum.

Osservazioni

Testo aggiornato:5 dicembre 2005

Use this property to help guard against an unexpectedly large number of subscriptions entered into the application.

Subscription throttles apply to scheduled rules only, not event-driven rules.

During each quantum, the generator gets the current set of scheduled subscriptions for each subscription class and counts the subscriptions. If the subscription throttle value is exceeded, the generator abandons the quantum.

If you use the Application(Instance,String) constructor, the default value is 1000. If you use the default constructor, you must set this property.

If you set the subscription throttle value to 0, there is no limit to the number of scheduled subscriptions processed from a subscription class during a quantum.

Esempio

The following examples show how to set all application execution settings, including the subscription throttle:

// Define application execution settings
myApplication.QuantumDuration = new TimeSpan(0, 0, 15);
myApplication.PerformanceQueryInterval = new TimeSpan(0, 0, 5);
myApplication.SubscriptionQuantumLimit = 1;
myApplication.ChronicleQuantumLimit = 1;
myApplication.VacuumRetentionAge = new TimeSpan(0, 0, 1);
myApplication.LogBeforeDeliveryAttempts = false;
myApplication.LogNotificationText = false;
myApplication.LogStatusInfo = false;
myApplication.EventThrottle = 500;
myApplication.NotificationThrottle = 500;
myApplication.SubscriptionThrottle = 500;
myApplication.ProcessEventsInOrder = false;

' Define application execution settings
myApplication.QuantumDuration = New TimeSpan(0, 0, 15)
myApplication.PerformanceQueryInterval = New TimeSpan(0, 0, 5)
myApplication.SubscriptionQuantumLimit = 1
myApplication.ChronicleQuantumLimit = 1
myApplication.VacuumRetentionAge = New TimeSpan(0, 0, 1)
myApplication.LogBeforeDeliveryAttempts = False
myApplication.LogNotificationText = False
myApplication.LogStatusInfo = False
myApplication.EventThrottle = 500
myApplication.NotificationThrottle = 500
myApplication.SubscriptionThrottle = 500
myApplication.ProcessEventsInOrder = False

Thread Safety

Any public static (Shared in Microsoft Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Piattaforme

Piattaforme di sviluppo

Per un elenco delle piattaforme supportate, vedere Requisiti hardware e software per l'Installazione di SQL Server 2005.

Piattaforme di destinazione

Per un elenco delle piattaforme supportate, vedere Requisiti hardware e software per l'Installazione di SQL Server 2005.

Vedere anche

Riferimento

Application Class
Application Members
Microsoft.SqlServer.Management.Nmo Namespace

Altre risorse

Specificazione di velocità per eventi, sottoscrizioni e notifiche
SubscriptionThrottle Element (ADF)

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