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如何:指定同步排程 (RMO 程式設計)

複寫會使用 SQL Server Agent 來排程定期發生之活動的作業,例如快照集的產生和訂閱同步處理。您可以使用複寫管理物件 (RMO),以程式設計方式指定複寫代理程式作業的排程。

[!附註]

當您建立訂閱,並針對 CreateSyncAgentByDefault (提取訂閱的預設行為) 指定 false 的值時,不會建立代理程式作業,而且會忽略排程屬性。在此情況下,同步排程必須由應用程式來決定。如需詳細資訊,請參閱<如何:建立提取訂閱 (RMO 程式設計)>和<如何:建立發送訂閱 (RMO 程式設計)>。

當您建立交易式發行集的發送訂閱時,定義複寫代理程式排程

  1. 為您所建立的訂閱建立 TransSubscription 類別的執行個體。如需詳細資訊,請參閱<如何:建立發送訂閱 (RMO 程式設計)>。

  2. 在您呼叫 Create 之前,請設定 AgentSchedule 屬性的下列一或多個欄位:

    [!附註]

    若未指定這些屬性的其中一個,則會設定預設值。

  3. 呼叫 Create 方法來建立訂閱。

當您建立交易式發行集的提取訂閱時,定義複寫代理程式排程

  1. 為您所建立的訂閱建立 TransPullSubscription 類別的執行個體。如需詳細資訊,請參閱<如何:建立提取訂閱 (RMO 程式設計)>。

  2. 在您呼叫 Create 之前,請設定 AgentSchedule 屬性的下列一或多個欄位:

    [!附註]

    若未指定這些屬性的其中一個,則會設定預設值。

  3. 呼叫 Create 方法來建立訂閱。

當您建立合併式發行集的提取訂閱時,定義複寫代理程式排程

  1. 為您所建立的訂閱建立 MergePullSubscription 類別的執行個體。如需詳細資訊,請參閱<如何:建立提取訂閱 (RMO 程式設計)>。

  2. 在您呼叫 Create 之前,請設定 AgentSchedule 屬性的下列一或多個欄位:

    [!附註]

    若未指定這些屬性的其中一個,則會設定預設值。

  3. 呼叫 Create 方法來建立訂閱。

當您建立合併式發行集的發送訂閱時,定義複寫代理程式排程

  1. 為您所建立的訂閱建立 MergeSubscription 類別的執行個體。如需詳細資訊,請參閱<如何:建立發送訂閱 (RMO 程式設計)>。

  2. 在您呼叫 Create 之前,請設定 AgentSchedule 屬性的下列一或多個欄位:

    [!附註]

    若未指定這些屬性的其中一個,則會設定預設值。

  3. 呼叫 Create 方法來建立訂閱。

範例

此範例會建立合併式發行集的發送訂閱,並指定同步處理此訂閱所依據的排程。

           // Define the Publisher, publication, and databases.
            string publicationName = "AdvWorksSalesOrdersMerge";
            string publisherName = publisherInstance;
            string subscriberName = subscriberInstance;
            string subscriptionDbName = "AdventureWorks2008R2Replica";
            string publicationDbName = "AdventureWorks2008R2";
            string hostname = @"adventure-works\garrett1";

            //Create a connection to the Publisher.
            ServerConnection conn = new ServerConnection(subscriberName);

            // Create the objects that we need.
            MergePublication publication;
            MergeSubscription subscription;

            try
            {
                // Connect to the Publisher.
                conn.Connect();

                // Ensure that the publication exists and that 
                // it supports push subscriptions.
                publication = new MergePublication();
                publication.Name = publicationName;
                publication.DatabaseName = publicationDbName;
                publication.ConnectionContext = conn;

                if (publication.IsExistingObject)
                {
                    if ((publication.Attributes & PublicationAttributes.AllowPush) == 0)
                    {
                        publication.Attributes |= PublicationAttributes.AllowPush;
                    }

                    // Define the push subscription.
                    subscription = new MergeSubscription();
                    subscription.ConnectionContext = conn;
                    subscription.SubscriberName = subscriberName;
                    subscription.PublicationName = publicationName;
                    subscription.DatabaseName = publicationDbName;
                    subscription.SubscriptionDBName = subscriptionDbName;
                    subscription.HostName = hostname;

                    // Set a schedule to synchronize the subscription every 2 hours
                    // during weekdays from 6am to 10pm.
                    subscription.AgentSchedule.FrequencyType = ScheduleFrequencyType.Weekly;
                    subscription.AgentSchedule.FrequencyInterval = Convert.ToInt32(0x003E);
                    subscription.AgentSchedule.FrequencyRecurrenceFactor = 1;
                    subscription.AgentSchedule.FrequencySubDay = ScheduleFrequencySubDay.Hour;
                    subscription.AgentSchedule.FrequencySubDayInterval = 2;
                    subscription.AgentSchedule.ActiveStartDate = 20051108;
                    subscription.AgentSchedule.ActiveEndDate = 20071231;
                    subscription.AgentSchedule.ActiveStartTime = 060000;
                    subscription.AgentSchedule.ActiveEndTime = 100000;

                    // Specify the Windows login credentials for the Merge Agent job.
                    subscription.SynchronizationAgentProcessSecurity.Login = winLogin;
                    subscription.SynchronizationAgentProcessSecurity.Password = winPassword;

                    // Create the push subscription.
                    subscription.Create();
                }
                else
                {
                    // Do something here if the publication does not exist.
                    throw new ApplicationException(String.Format(
                        "The publication '{0}' does not exist on {1}.",
                        publicationName, publisherName));
                }
            }
            catch (Exception ex)
            {
                // Implement the appropriate error handling here.
                throw new ApplicationException(String.Format(
                    "The subscription to {0} could not be created.", publicationName), ex);
            }
            finally
            {
                conn.Disconnect();
            }
' Define the Publisher, publication, and databases.
Dim publicationName As String = "AdvWorksSalesOrdersMerge"
Dim publisherName As String = publisherInstance
Dim subscriberName As String = subscriberInstance
Dim subscriptionDbName As String = "AdventureWorks2008R2Replica"
Dim publicationDbName As String = "AdventureWorks2008R2"
Dim hostname As String = "adventure-works\garrett1"

'Create a connection to the Publisher.
Dim conn As ServerConnection = New ServerConnection(subscriberName)

' Create the objects that we need.
Dim publication As MergePublication
Dim subscription As MergeSubscription

Try
    ' Connect to the Publisher.
    conn.Connect()

    ' Ensure that the publication exists and that 
    ' it supports push subscriptions.
    publication = New MergePublication()
    publication.Name = publicationName
    publication.DatabaseName = publicationDbName
    publication.ConnectionContext = conn

    If publication.IsExistingObject Then
        If (publication.Attributes And PublicationAttributes.AllowPush) = 0 Then
            publication.Attributes = publication.Attributes _
            Or PublicationAttributes.AllowPush
        End If

        ' Define the push subscription.
        subscription = New MergeSubscription()
        subscription.ConnectionContext = conn
        subscription.SubscriberName = subscriberName
        subscription.PublicationName = publicationName
        subscription.DatabaseName = publicationDbName
        subscription.SubscriptionDBName = subscriptionDbName
        subscription.HostName = hostname

        ' Set a schedule to synchronize the subscription every 2 hours
        ' during weekdays from 6am to 10pm.
        subscription.AgentSchedule.FrequencyType = ScheduleFrequencyType.Weekly
        subscription.AgentSchedule.FrequencyInterval = Convert.ToInt32("0x003E", 16)
        subscription.AgentSchedule.FrequencyRecurrenceFactor = 1
        subscription.AgentSchedule.FrequencySubDay = ScheduleFrequencySubDay.Hour
        subscription.AgentSchedule.FrequencySubDayInterval = 2
        subscription.AgentSchedule.ActiveStartDate = 20051108
        subscription.AgentSchedule.ActiveEndDate = 20071231
        subscription.AgentSchedule.ActiveStartTime = 60000
        subscription.AgentSchedule.ActiveEndTime = 100000

        ' Specify the Windows login credentials for the Merge Agent job.
        subscription.SynchronizationAgentProcessSecurity.Login = winLogin
        subscription.SynchronizationAgentProcessSecurity.Password = winPassword

        ' Create the push subscription.
        subscription.Create()
    Else

        ' Do something here if the publication does not exist.
        Throw New ApplicationException(String.Format( _
         "The publication '{0}' does not exist on {1}.", _
         publicationName, publisherName))
    End If
Catch ex As Exception
    ' Implement the appropriate error handling here.
    Throw New ApplicationException(String.Format( _
    "The subscription to {0} could not be created.", publicationName), ex)
Finally
    conn.Disconnect()
End Try