Create a Pull Subscription

  • Artigo

Aplica-se a:SQL ServerInstância Gerenciada de SQL do Azure

Este tópico descreve como criar uma assinatura pull no SQL Server usando o SQL Server Management Studio, o Transact-SQL ou o Replication Management Objects (RMO).

A configuração de uma assinatura pull para a replicação de P2P é possível por script, mas não está disponível por meio do assistente.

Como usar o SQL Server Management Studio.

Crie uma assinatura pull no Publicador ou Assinante, usando o Assistente para Novas Assinaturas. Siga as páginas no assistente para:

  • Especificar o Publicador e a publicação.

  • Selecione onde os agentes de replicação executarão. Para uma assinatura pull, selecione Executar cada agente como seu assinante (assinaturas pull) na página Local do Distribution Agent ou na página Local do Merge Agent , dependendo do tipo de publicação.

  • Especifique Assinantes e bancos de dados de assinatura.

  • Especifique os logons e senhas usadas para conexões feitas por agentes de replicação:

    • Para assinaturas para instantâneos e publicações transacionais, especifique as credenciais na página Segurança do Distribution Agent .

    • Para assinaturas para publicações de mesclagem, especifique as credenciais na página Segurança do Merge Agent .

    Para obter informações sobre as permissões exigidas por cada agente, consulte Replication Agent Security Model.

  • Especifique uma agenda de sincronização e quando o Assinante deve ser inicializado.

  • Especifique opções adicionais para as publicações de mesclagem: tipo da assinatura; valores para filtragem com parâmetros e as informações para sincronização através de HTTPS se a publicação estiver habilitada para sincronização da Web.

  • Especifique opções adicionais para publicações transacionais que permitem assinaturas de atualização: se os Assinantes devem confirmar alterações no Publicador imediatamente ou gravá-las em uma fila; credenciais usadas do Assinante para o Publicador.

  • Opcionalmente, faça o script da assinatura.

Para criar uma assinatura pull do Publicador

  1. Conecte-se ao Publicador no Microsoft SQL Server Management Studio e, em seguida, expanda o nó de servidor.

  2. Expanda a pasta Replicação e, em seguida, a pasta Publicações Locais .

  3. Clique com o botão direito do mouse na publicação na qual você deseja criar uma ou mais assinaturas e clique em Novas Assinaturas.

  4. Complete as páginas no Assistente para Novas Assinaturas.

Para criar uma assinatura pull do Assinante

  1. Conecte-se ao Assinante no SQL Server Management Studio e, em seguida, expanda o nó de servidor.

  2. Expanda a pasta Replicação .

  3. Clique com o botão direito do mouse na pasta Assinaturas Locais e depois clique em Novas Assinaturas.

  4. Na página Publicação do Assistente para Nova Assinatura, selecione <Encontrar publicador do SQL Server> ou <Encontrar publicador do Oracle> na lista suspensa Publicador.

  5. Conecte-se ao Publicador na caixa de diálogo Conectar ao Servidor .

  6. Selecione uma publicação na página Publicação .

  7. Complete as páginas no Assistente para Novas Assinaturas.

Usando o Transact-SQL

As assinaturas pull podem ser criadas de forma programada, usando os procedimentos de replicação armazenados. Os procedimentos armazenados usados dependem do tipo de publicação ao qual a assinatura pertence.

Para criar uma assinatura pull em um instantâneo ou em uma publicação transacional

  1. No Publicador, verifique se a publicação dá suporte a assinaturas pull executando sp_helppublication (Transact-SQL).

    • Se o valor de allow_pull no conjunto de resultados for 1, a publicação terá suporte para as assinaturas pull.

    • Se o valor de allow_pull for 0, execute sp_changepublication (Transact-SQL), especificando allow_pull para @property e true para @value.

  2. No Assinante, execute sp_addpullsubscription (Transact-SQL). Especifique @publisher e @publication. Para obter mais informações sobre assinaturas de atualização, consulte Criar uma assinatura atualizável em uma publicação transacional

  3. No Assinante, execute sp_addpullsubscription_agent (Transact-SQL). Especifique o seguinte:

    • Os parâmetros @publisher, @publisher_db, e @publication .

    • As credenciais do Microsoft Windows sob as quais o Distribution Agent do Assinante é executado para @job_login e @job_password.

      Observação

      As conexões realizadas com Autenticação Integrada do Windows sempre usam as credenciais do Windows especificadas por @job_login e @password. O Distribution Agent sempre faz a conexão local ao Assinante usando a Autenticação Integrada do Windows. Por padrão, o agente conecta-se ao Distribuidor usando a Autenticação Integrada do Windows.

    • (Opcional) Um valor 0 para @distributor_security_mode e as informações de logon do SQL Server para @distributor_login e @distributor_password, se for necessário usar a Autenticação do SQL Server ao conectar-se com o Distribuidor.

    • Agenda para o trabalho do Distribution Agent para essa assinatura. Para obter mais informações, consulte Specify Synchronization Schedules.

  4. No Publicador, execute sp_addsubscription (Transact-SQL) para registrar a assinatura pull. Especifique @publication, @subscribere @destination_db. Especifique um valor de pull para @subscription_type.

Para criar uma assinatura pull para a publicação de mesclagem

  1. No Publicador, verifique se a publicação dá suporte a assinaturas pull executando sp_helpmergepublication (Transact-SQL).

    • Se o valor de allow_pull no conjunto de resultados for 1, a publicação terá suporte para as assinaturas pull.

    • Se o valor de allow_pull for 0, execute sp_changemergepublication (Transact-SQL), especificando allow_pull para @property e true para @value.

  2. No Assinante, execute sp_addmergepullsubscription (Transact-SQL). Especifique @publisher, @publisher_db, @publicatione os parâmetros a seguir:

  3. No Assinante, execute sp_addmergepullsubscription_agent (Transact-SQL). Especifique os seguintes parâmetros:

    • @publisher, @publisher_dbe @publication.

    • As credenciais do Windows sob as quais o Merge Agent no Assinante é executado para @job_login e @job_password.

      Observação

      As conexões realizadas com Autenticação Integrada do Windows sempre usam as credenciais do Windows especificadas por @job_login e @password. O Merge Agent sempre faz a conexão local ao Assinante usando a Autenticação Integrada do Windows. Por padrão, o agente se conecta ao Distribuidor e ao Publicador usando a Autenticação Integrada do Windows.

    • (Opcional) Um valor 0 para @distributor_security_mode e as informações de logon do SQL Server para @distributor_login e @distributor_password, se for necessário usar a Autenticação do SQL Server ao conectar-se com o Distribuidor.

    • (Opcional) Um valor de 0 para @publisher_security_mode e as informações de logon do SQL Server para @publisher_login e @publisher_password, se você precisar usar a autenticação do SQL Server ao se conectar ao Publicador.

    • Agenda para o trabalho do Merge Agent para essa assinatura. Para obter mais informações, consulte Criar uma assinatura atualizável em uma publicação transacional

  4. No Publicador, execute sp_addmergesubscription (Transact-SQL). Especifique @publication, @subscriber, @subscriber_db, e o valor pull para @subscription_type. Isso registra a assinatura pull.

Exemplos (Transact-SQL)

O exemplo a seguir cria uma nova assinatura pull para uma publicação transacional. O primeiro lote é executado no Assinante, e o segundo lote é executado no Publicador. Os valores para o logon e senha são fornecidos no runtime usando as variáveis sqlcmd scripting.

-- This script uses sqlcmd scripting variables. They are in the form  
-- $(MyVariable). For information about how to use scripting variables    
-- on the command line and in SQL Server Management Studio, see the   
-- "Executing Replication Scripts" section in the topic  
-- "Programming Replication Using System Stored Procedures".  
  
-- Execute this batch at the Subscriber.  
DECLARE @publication AS sysname;  
DECLARE @publisher AS sysname;  
DECLARE @publicationDB AS sysname;  
SET @publication = N'AdvWorksProductTran';  
SET @publisher = $(PubServer);  
SET @publicationDB = N'AdventureWorks';  
  
-- At the subscription database, create a pull subscription   
-- to a transactional publication.  
USE [AdventureWorksReplica]  
EXEC sp_addpullsubscription   
  @publisher = @publisher,   
  @publication = @publication,   
  @publisher_db = @publicationDB;  
  
-- Add an agent job to synchronize the pull subscription.  
EXEC sp_addpullsubscription_agent   
  @publisher = @publisher,   
  @publisher_db = @publicationDB,   
  @publication = @publication,   
  @distributor = @publisher,   
  @job_login = $(Login),   
  @job_password = $(Password);  
GO  

-- This script uses sqlcmd scripting variables. They are in the form  
-- $(MyVariable). For information about how to use scripting variables    
-- on the command line and in SQL Server Management Studio, see the   
-- "Executing Replication Scripts" section in the topic  
-- "Programming Replication Using System Stored Procedures".  
  
-- Execute this batch at the Publisher.  
DECLARE @publication AS sysname;  
DECLARE @subscriber AS sysname;  
DECLARE @subscriptionDB AS sysname;  
SET @publication = N'AdvWorksProductTran';  
SET @subscriber = $(SubServer);  
SET @subscriptionDB = N'AdventureWorksReplica';  
  
-- At the Publisher, register the subscription, using the defaults.  
EXEC sp_addsubscription   
  @publication = @publication,   
  @subscriber = @subscriber,   
  @destination_db = @subscriptionDB,   
  @subscription_type = N'pull',  
  @status = N'subscribed';  
GO

O exemplo a seguir cria uma nova assinatura pull para uma publicação de mesclagem. O primeiro lote é executado no Assinante, e o segundo lote é executado no Publicador. Os valores de logon e senha são fornecidos em runtime através das variáveis de script sqlcmd .

-- This script uses sqlcmd scripting variables. They are in the form  
-- $(MyVariable). For information about how to use scripting variables    
-- on the command line and in SQL Server Management Studio, see the   
-- "Executing Replication Scripts" section in the topic  
-- "Programming Replication Using System Stored Procedures".  
  
-- Execute this batch at the Subscriber.  
DECLARE @publication AS sysname;  
DECLARE @publisher AS sysname;  
DECLARE @publicationDB AS sysname;  
DECLARE @hostname AS sysname;  
SET @publication = N'AdvWorksSalesOrdersMerge';  
SET @publisher = $(PubServer);  
SET @publicationDB = N'AdventureWorks';  
SET @hostname = N'adventure-works\david8';  
  
-- At the subscription database, create a pull subscription   
-- to a merge publication.  
USE [AdventureWorksReplica]  
EXEC sp_addmergepullsubscription   
  @publisher = @publisher,   
  @publication = @publication,   
  @publisher_db = @publicationDB;  
  
-- Add an agent job to synchronize the pull subscription.   
EXEC sp_addmergepullsubscription_agent   
  @publisher = @publisher,   
  @publisher_db = @publicationDB,   
  @publication = @publication,   
  @distributor = @publisher,   
  @job_login = $(Login),   
  @job_password = $(Password),  
  @hostname = @hostname;  
GO  

-- Execute this batch at the Publisher.  
DECLARE @myMergePub  AS sysname;  
DECLARE @mySub       AS sysname;  
DECLARE @mySubDB     AS sysname;  
  
SET @myMergePub = N'AdvWorksSalesOrdersMerge';  
SET @mySub = N'MYSUBSERVER';  
SET @mySubDB = N'AdventureWorksReplica';  
  
-- At the Publisher, register the subscription, using the defaults.  
USE [AdventureWorks]  
EXEC sp_addmergesubscription @publication = @myMergePub,   
@subscriber = @mySub, @subscriber_db = @mySubDB,   
@subscription_type = N'pull';  
GO

Usando o RMO (Replication Management Objects)

As classes RMO usadas para criar uma assinatura pull dependem do tipo de publicação ao qual a assinatura pertence.

Para criar uma assinatura pull em um instantâneo ou em uma publicação transacional

  1. Crie conexões para o Assinante e Publicador, usando a classe ServerConnection .

  2. Crie uma instância da classe TransPublication usando a conexão com o Publicador da etapa 1. Especifique Name, DatabaseName e ConnectionContext.

  3. Chame o método LoadProperties . Se esse método retornar false, as propriedades especificadas na etapa 2 estarão incorretas ou a publicação não existe no servidor.

  4. Realize uma lógica AND de bit a bit (& no Visual C# e And no Visual Basic) entre a propriedade Attributes e AllowPull. Se o resultado for None, defina Attributes para o resultado de uma lógica bit a bit OR (| no Visual C# e Or em Visual Basic) entre Attributes e AllowPull. Em seguida, chame CommitPropertyChanges para habilitar assinaturas pull.

  5. Se não houver banco de dados de assinatura, crie-o usando a classe Database . Para obter mais informações, consulte Creating, Altering, and Removing Databases (Criando, alterando e removendo bancos de dados).

  6. Criar uma instância da classe TransPullSubscription.

  7. Defina as seguintes propriedades de assinatura:

  8. Chame o método Create .

  9. Crie uma instância da classe TransPublication da etapa 2, chame o método MakePullSubscriptionWellKnown para registrar a assinatura pull com o Publicador. Se esse registro já existir, haverá uma exceção.

Para criar uma assinatura pull para a publicação de mesclagem

  1. Crie conexões para o Assinante e o Publicador usando a classe ServerConnection .

  2. Crie uma instância da classe MergePublication usando a conexão com o Publicador da etapa 1. Especifique Name, DatabaseName, e ConnectionContext.

  3. Chame o método LoadProperties . Se esse método retornar false, as propriedades especificadas na etapa 2 estarão incorretas ou a publicação não existe no servidor.

  4. Realize uma lógica AND de bit a bit (& no Visual C# e And no Visual Basic) entre a propriedade Attributes e AllowPull. Se o resultado for None, defina Attributes para o resultado de uma lógica bit a bit OR (| no Visual C# e Or em Visual Basic) entre Attributes e AllowPull. Em seguida, chame CommitPropertyChanges para habilitar assinaturas pull.

  5. Se não houver banco de dados de assinatura, crie-o usando a classe Database . Para obter mais informações, consulte Creating, Altering, and Removing Databases (Criando, alterando e removendo bancos de dados).

  6. Criar uma instância da classe MergePullSubscription.

  7. Defina as seguintes propriedades de assinatura:

  8. Chame o método Create .

  9. Crie uma instância da classe MergePublication da etapa 2, chame o método MakePullSubscriptionWellKnown para registrar a assinatura pull com o Publicador. Se esse registro já existir, haverá uma exceção.

Exemplo (RMO)

Esse exemplo cria uma assinatura pull para uma publicação transacional. As credenciais da conta do Microsoft Windows usadas para criar o trabalho do Distribution Agent são passadas em runtime.

// Define the Publisher, publication, and databases.  
string publicationName = "AdvWorksProductTran";  
string publisherName = publisherInstance;  
string subscriberName = subscriberInstance;  
string subscriptionDbName = "AdventureWorksReplica";  
string publicationDbName = "AdventureWorks";  
  
//Create connections to the Publisher and Subscriber.  
ServerConnection subscriberConn = new ServerConnection(subscriberName);  
ServerConnection publisherConn = new ServerConnection(publisherName);  
  
// Create the objects that we need.  
TransPublication publication;  
TransPullSubscription subscription;  
  
try  
{  
    // Connect to the Publisher and Subscriber.  
    subscriberConn.Connect();  
    publisherConn.Connect();  
  
    // Ensure that the publication exists and that   
    // it supports pull subscriptions.  
    publication = new TransPublication();  
    publication.Name = publicationName;  
    publication.DatabaseName = publicationDbName;  
    publication.ConnectionContext = publisherConn;  
  
    if (publication.IsExistingObject)  
    {  
        if ((publication.Attributes & PublicationAttributes.AllowPull) == 0)  
        {  
            publication.Attributes |= PublicationAttributes.AllowPull;  
        }  
  
        // Define the pull subscription.  
        subscription = new TransPullSubscription();  
        subscription.ConnectionContext = subscriberConn;  
        subscription.PublisherName = publisherName;  
        subscription.PublicationName = publicationName;  
        subscription.PublicationDBName = publicationDbName;  
        subscription.DatabaseName = subscriptionDbName;  
  
        // Specify the Windows login credentials for the Distribution Agent job.  
        subscription.SynchronizationAgentProcessSecurity.Login = winLogin;  
        subscription.SynchronizationAgentProcessSecurity.Password = winPassword;  
  
        // Make sure that the agent job for the subscription is created.  
        subscription.CreateSyncAgentByDefault = true;  
  
        // By default, subscriptions to transactional publications are synchronized   
        // continuously, but in this case we only want to synchronize on demand.  
        subscription.AgentSchedule.FrequencyType = ScheduleFrequencyType.OnDemand;  
  
        // Create the pull subscription at the Subscriber.  
        subscription.Create();  
  
        Boolean registered = false;  
  
        // Verify that the subscription is not already registered.  
        foreach (TransSubscription existing  
            in publication.EnumSubscriptions())  
        {  
            if (existing.SubscriberName == subscriberName  
                && existing.SubscriptionDBName == subscriptionDbName)  
            {  
                registered = true;  
            }  
        }  
        if (!registered)  
        {  
            // Register the subscription with the Publisher.  
            publication.MakePullSubscriptionWellKnown(  
                subscriberName, subscriptionDbName,  
                SubscriptionSyncType.Automatic,  
                TransSubscriberType.ReadOnly);  
        }  
    }  
    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  
{  
    subscriberConn.Disconnect();  
    publisherConn.Disconnect();  
}  
  

' Define the Publisher, publication, and databases.  
Dim publicationName As String = "AdvWorksProductTran"  
Dim publisherName As String = publisherInstance  
Dim subscriberName As String = subscriberInstance  
Dim subscriptionDbName As String = "AdventureWorksReplica"  
Dim publicationDbName As String = "AdventureWorks"  
  
'Create connections to the Publisher and Subscriber.  
Dim subscriberConn As ServerConnection = New ServerConnection(subscriberName)  
Dim publisherConn As ServerConnection = New ServerConnection(publisherName)  
  
' Create the objects that we need.  
Dim publication As TransPublication  
Dim subscription As TransPullSubscription  
  
Try  
    ' Connect to the Publisher and Subscriber.  
    subscriberConn.Connect()  
    publisherConn.Connect()  
  
    ' Ensure that the publication exists and that   
    ' it supports pull subscriptions.  
    publication = New TransPublication()  
    publication.Name = publicationName  
    publication.DatabaseName = publicationDbName  
    publication.ConnectionContext = publisherConn  
  
    If publication.IsExistingObject Then  
        If (publication.Attributes And PublicationAttributes.AllowPull) = 0 Then  
            publication.Attributes = publication.Attributes _  
            Or PublicationAttributes.AllowPull  
        End If  
  
        ' Define the pull subscription.  
        subscription = New TransPullSubscription()  
        subscription.ConnectionContext = subscriberConn  
        subscription.PublisherName = publisherName  
        subscription.PublicationName = publicationName  
        subscription.PublicationDBName = publicationDbName  
        subscription.DatabaseName = subscriptionDbName  
        subscription.Description = "Pull subscription to " + publicationDbName _  
        + " on " + subscriberName + "."  
  
        ' Specify the Windows login credentials for the Distribution Agent job.  
        subscription.SynchronizationAgentProcessSecurity.Login = winLogin  
        subscription.SynchronizationAgentProcessSecurity.Password = winPassword  
  
        ' Make sure that the agent job for the subscription is created.  
        subscription.CreateSyncAgentByDefault = True  
  
        ' By default, subscriptions to transactional publications are synchronized   
        ' continuously, but in this case we only want to synchronize on demand.  
        subscription.AgentSchedule.FrequencyType = ScheduleFrequencyType.OnDemand  
  
        ' Create the pull subscription at the Subscriber.  
        subscription.Create()  
  
        Dim registered As Boolean = False  
  
        ' Verify that the subscription is not already registered.  
        For Each existing As TransSubscription In publication.EnumSubscriptions()  
            If existing.SubscriberName = subscriberName And _  
                existing.SubscriptionDBName = subscriptionDbName Then  
                registered = True  
            End If  
        Next existing  
        If Not registered Then  
            ' Register the subscription with the Publisher.  
            publication.MakePullSubscriptionWellKnown( _  
             subscriberName, subscriptionDbName, _  
             SubscriptionSyncType.Automatic, _  
             TransSubscriberType.ReadOnly)  
        End If  
    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  
    subscriberConn.Disconnect()  
    publisherConn.Disconnect()  
End Try

Esse exemplo cria uma assinatura pull para uma publicação de mesclagem. As credenciais da conta do Windows usadas para criar o trabalho do Agente de Mesclagem são passadas em runtime.

// Define the Publisher, publication, and databases.  
string publicationName = "AdvWorksSalesOrdersMerge";  
string publisherName = publisherInstance;  
string subscriberName = subscriberInstance;  
string subscriptionDbName = "AdventureWorksReplica";  
string publicationDbName = "AdventureWorks";  
string hostname = @"adventure-works\garrett1";  
  
//Create connections to the Publisher and Subscriber.  
ServerConnection subscriberConn = new ServerConnection(subscriberName);  
ServerConnection publisherConn = new ServerConnection(publisherName);  
  
// Create the objects that we need.  
MergePublication publication;  
MergePullSubscription subscription;  
  
try  
{  
    // Connect to the Subscriber.  
    subscriberConn.Connect();  
  
    // Ensure that the publication exists and that   
    // it supports pull subscriptions.  
    publication = new MergePublication();  
    publication.Name = publicationName;  
    publication.DatabaseName = publicationDbName;  
    publication.ConnectionContext = publisherConn;  
  
    if (publication.LoadProperties())  
    {  
        if ((publication.Attributes & PublicationAttributes.AllowPull) == 0)  
        {  
            publication.Attributes |= PublicationAttributes.AllowPull;  
        }  
  
        // Define the pull subscription.  
        subscription = new MergePullSubscription();  
        subscription.ConnectionContext = subscriberConn;  
        subscription.PublisherName = publisherName;  
        subscription.PublicationName = publicationName;  
        subscription.PublicationDBName = publicationDbName;  
        subscription.DatabaseName = subscriptionDbName;  
        subscription.HostName = hostname;  
  
        // Specify the Windows login credentials for the Merge Agent job.  
        subscription.SynchronizationAgentProcessSecurity.Login = winLogin;  
        subscription.SynchronizationAgentProcessSecurity.Password = winPassword;  
  
        // Make sure that the agent job for the subscription is created.  
        subscription.CreateSyncAgentByDefault = true;  
  
        // Create the pull subscription at the Subscriber.  
        subscription.Create();  
  
        Boolean registered = false;  
  
        // Verify that the subscription is not already registered.  
        foreach (MergeSubscription existing  
            in publication.EnumSubscriptions())  
        {  
            if (existing.SubscriberName == subscriberName  
                && existing.SubscriptionDBName == subscriptionDbName  
                && existing.SubscriptionType == SubscriptionOption.Pull)  
            {  
                registered = true;  
            }  
        }  
        if (!registered)  
        {  
            // Register the local subscription with the Publisher.  
            publication.MakePullSubscriptionWellKnown(  
                subscriberName, subscriptionDbName,  
                SubscriptionSyncType.Automatic,  
                MergeSubscriberType.Local, 0);  
        }  
    }  
    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  
{  
    subscriberConn.Disconnect();  
    publisherConn.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 = "AdventureWorksReplica"  
Dim publicationDbName As String = "AdventureWorks"  
Dim hostname As String = "adventure-works\garrett1"  
  
'Create connections to the Publisher and Subscriber.  
Dim subscriberConn As ServerConnection = New ServerConnection(subscriberName)  
Dim publisherConn As ServerConnection = New ServerConnection(publisherName)  
  
' Create the objects that we need.  
Dim publication As MergePublication  
Dim subscription As MergePullSubscription  
  
Try  
    ' Connect to the Subscriber.  
    subscriberConn.Connect()  
  
    ' Ensure that the publication exists and that   
    ' it supports pull subscriptions.  
    publication = New MergePublication()  
    publication.Name = publicationName  
    publication.DatabaseName = publicationDbName  
    publication.ConnectionContext = publisherConn  
  
    If publication.LoadProperties() Then  
        If (publication.Attributes And PublicationAttributes.AllowPull) = 0 Then  
            publication.Attributes = publication.Attributes _  
            Or PublicationAttributes.AllowPull  
        End If  
  
        ' Define the pull subscription.  
        subscription = New MergePullSubscription()  
        subscription.ConnectionContext = subscriberConn  
        subscription.PublisherName = publisherName  
        subscription.PublicationName = publicationName  
        subscription.PublicationDBName = publicationDbName  
        subscription.DatabaseName = subscriptionDbName  
        subscription.HostName = hostname  
  
        ' Specify the Windows login credentials for the Merge Agent job.  
        subscription.SynchronizationAgentProcessSecurity.Login = winLogin  
        subscription.SynchronizationAgentProcessSecurity.Password = winPassword  
  
        ' Make sure that the agent job for the subscription is created.  
        subscription.CreateSyncAgentByDefault = True  
  
        ' Create the pull subscription at the Subscriber.  
        subscription.Create()  
  
        Dim registered As Boolean = False  
  
        ' Verify that the subscription is not already registered.  
        For Each existing As MergeSubscription In _  
        publication.EnumSubscriptions()  
            If existing.SubscriberName = subscriberName Then  
                registered = True  
            End If  
        Next  
        If Not registered Then  
            ' Register the local subscription with the Publisher.  
            publication.MakePullSubscriptionWellKnown( _  
             subscriberName, subscriptionDbName, _  
             SubscriptionSyncType.Automatic, _  
             MergeSubscriberType.Local, 0)  
        End If  
    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  
    subscriberConn.Disconnect()  
    publisherConn.Disconnect()  
End Try

Esse exemplo cria uma assinatura pull para uma publicação de mesclagem, sem criar um trabalho de agente associado e metadados de assinatura em MSsubscription_properties. As credenciais da conta do Windows usadas para criar o trabalho do Agente de Mesclagem são passadas em runtime.

// Define the Publisher, publication, and databases.  
string publicationName = "AdvWorksSalesOrdersMerge";  
string publisherName = publisherInstance;  
string subscriberName = subscriberInstance;  
string subscriptionDbName = "AdventureWorksReplica";  
string publicationDbName = "AdventureWorks";  
  
//Create connections to the Publisher and Subscriber.  
ServerConnection subscriberConn = new ServerConnection(subscriberName);  
ServerConnection publisherConn = new ServerConnection(publisherName);  
  
// Create the objects that we need.  
MergePublication publication;  
MergePullSubscription subscription;  
  
try  
{  
    // Connect to the Subscriber.  
    subscriberConn.Connect();  
  
    // Ensure that the publication exists and that   
    // it supports pull subscriptions.  
    publication = new MergePublication();  
    publication.Name = publicationName;  
    publication.DatabaseName = publicationDbName;  
    publication.ConnectionContext = publisherConn;  
  
    if (publication.LoadProperties())  
    {  
        if ((publication.Attributes & PublicationAttributes.AllowPull) == 0)  
        {  
            publication.Attributes |= PublicationAttributes.AllowPull;  
        }  
  
        // Define the pull subscription.  
        subscription = new MergePullSubscription();  
        subscription.ConnectionContext = subscriberConn;  
        subscription.PublisherName = publisherName;  
        subscription.PublicationName = publicationName;  
        subscription.PublicationDBName = publicationDbName;  
        subscription.DatabaseName = subscriptionDbName;  
  
        // Specify that an agent job not be created for this subscription. The  
        // subscription can only be synchronized by running the Merge Agent directly.  
        // Subscripition metadata stored in MSsubscription_properties will not  
        // be available and must be specified at run time.  
        subscription.CreateSyncAgentByDefault = false;  
  
        // Create the pull subscription at the Subscriber.  
        subscription.Create();  
  
        Boolean registered = false;  
  
        // Verify that the subscription is not already registered.  
        foreach (MergeSubscription existing  
            in publication.EnumSubscriptions())  
        {  
            if (existing.SubscriberName == subscriberName  
                && existing.SubscriptionDBName == subscriptionDbName  
                && existing.SubscriptionType == SubscriptionOption.Pull)  
            {  
                registered = true;  
            }  
        }  
        if (!registered)  
        {  
            // Register the local subscription with the Publisher.  
            publication.MakePullSubscriptionWellKnown(  
                subscriberName, subscriptionDbName,  
                SubscriptionSyncType.Automatic,  
                MergeSubscriberType.Local, 0);  
        }  
    }  
    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  
{  
    subscriberConn.Disconnect();  
    publisherConn.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 = "AdventureWorksReplica"  
Dim publicationDbName As String = "AdventureWorks"  
  
'Create connections to the Publisher and Subscriber.  
Dim subscriberConn As ServerConnection = New ServerConnection(subscriberName)  
Dim publisherConn As ServerConnection = New ServerConnection(publisherName)  
  
' Create the objects that we need.  
Dim publication As MergePublication  
Dim subscription As MergePullSubscription  
  
Try  
    ' Connect to the Subscriber.  
    subscriberConn.Connect()  
  
    ' Ensure that the publication exists and that   
    ' it supports pull subscriptions.  
    publication = New MergePublication()  
    publication.Name = publicationName  
    publication.DatabaseName = publicationDbName  
    publication.ConnectionContext = publisherConn  
  
    If publication.LoadProperties() Then  
        If (publication.Attributes And PublicationAttributes.AllowPull) = 0 Then  
            publication.Attributes = publication.Attributes _  
            Or PublicationAttributes.AllowPull  
        End If  
  
        ' Define the pull subscription.  
        subscription = New MergePullSubscription()  
        subscription.ConnectionContext = subscriberConn  
        subscription.PublisherName = publisherName  
        subscription.PublicationName = publicationName  
        subscription.PublicationDBName = publicationDbName  
        subscription.DatabaseName = subscriptionDbName  
  
        ' Specify that an agent job not be created for this subscription. The  
        ' subscription can only be synchronized by running the Merge Agent directly.  
        ' Subscripition metadata stored in MSsubscription_properties will not  
        ' be available and must be specified at run time.  
        subscription.CreateSyncAgentByDefault = False  
  
        ' Create the pull subscription at the Subscriber.  
        subscription.Create()  
  
        Dim registered As Boolean = False  
  
        ' Verify that the subscription is not already registered.  
        For Each existing As MergeSubscription In _  
        publication.EnumSubscriptions()  
            If existing.SubscriberName = subscriberName Then  
                registered = True  
            End If  
        Next  
        If Not registered Then  
            ' Register the local subscription with the Publisher.  
            publication.MakePullSubscriptionWellKnown( _  
             subscriberName, subscriptionDbName, _  
             SubscriptionSyncType.Automatic, _  
             MergeSubscriberType.Local, 0)  
        End If  
    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  
    subscriberConn.Disconnect()  
    publisherConn.Disconnect()  
End Try

Esse exemplo cria uma assinatura pull para uma publicação de mesclagem que pode ser sincronizada pela Internet usando-se sincronização da Web. As credenciais da conta do Windows usadas para criar o trabalho do Agente de Mesclagem são passadas em runtime. Para obter mais informações, consulte Configurar sincronização da Web.

// Define the Publisher, publication, and databases.  
string publicationName = "AdvWorksSalesOrdersMerge";  
string publisherName = publisherInstance;  
string subscriberName = subscriberInstance;  
string subscriptionDbName = "AdventureWorksReplica";  
string publicationDbName = "AdventureWorks";  
string hostname = @"adventure-works\garrett1";  
string webSyncUrl = "https://" + publisherInstance + "/WebSync/replisapi.dll";  
  
//Create connections to the Publisher and Subscriber.  
ServerConnection subscriberConn = new ServerConnection(subscriberName);  
ServerConnection publisherConn = new ServerConnection(publisherName);  
  
// Create the objects that we need.  
MergePublication publication;  
MergePullSubscription subscription;  
  
try  
{  
    // Connect to the Subscriber.  
    subscriberConn.Connect();  
  
    // Ensure that the publication exists and that   
    // it supports pull subscriptions and Web synchronization.  
    publication = new MergePublication();  
    publication.Name = publicationName;  
    publication.DatabaseName = publicationDbName;  
    publication.ConnectionContext = publisherConn;  
  
    if (publication.LoadProperties())  
    {  
        if ((publication.Attributes & PublicationAttributes.AllowPull) == 0)  
        {  
            publication.Attributes |= PublicationAttributes.AllowPull;  
        }  
        if ((publication.Attributes & PublicationAttributes.AllowWebSynchronization) == 0)  
        {  
            publication.Attributes |= PublicationAttributes.AllowWebSynchronization;  
        }  
  
        // Define the pull subscription.  
        subscription = new MergePullSubscription();  
        subscription.ConnectionContext = subscriberConn;  
        subscription.PublisherName = publisherName;  
        subscription.PublicationName = publicationName;  
        subscription.PublicationDBName = publicationDbName;  
        subscription.DatabaseName = subscriptionDbName;  
        subscription.HostName = hostname;  
  
        // Specify the Windows login credentials for the Merge Agent job.  
        subscription.SynchronizationAgentProcessSecurity.Login = winLogin;  
        subscription.SynchronizationAgentProcessSecurity.Password = winPassword;  
  
        // Enable Web synchronization.  
        subscription.UseWebSynchronization = true;  
        subscription.InternetUrl = webSyncUrl;  
  
        // Specify the same Windows credentials to use when connecting to the  
        // Web server using HTTPS Basic Authentication.  
        subscription.InternetSecurityMode = AuthenticationMethod.BasicAuthentication;  
        subscription.InternetLogin = winLogin;  
        subscription.InternetPassword = winPassword;  
  
        // Ensure that we create a job for this subscription.  
        subscription.CreateSyncAgentByDefault = true;  
  
        // Create the pull subscription at the Subscriber.  
        subscription.Create();  
  
        Boolean registered = false;  
  
        // Verify that the subscription is not already registered.  
        foreach (MergeSubscription existing  
            in publication.EnumSubscriptions())  
        {  
            if (existing.SubscriberName == subscriberName  
                && existing.SubscriptionDBName == subscriptionDbName  
                && existing.SubscriptionType == SubscriptionOption.Pull)  
            {  
                registered = true;  
            }  
        }  
        if (!registered)  
        {  
            // Register the local subscription with the Publisher.  
            publication.MakePullSubscriptionWellKnown(  
                subscriberName, subscriptionDbName,  
                SubscriptionSyncType.Automatic,  
                MergeSubscriberType.Local, 0);  
        }  
    }  
    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  
{  
    subscriberConn.Disconnect();  
    publisherConn.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 = "AdventureWorksReplica"  
Dim publicationDbName As String = "AdventureWorks"  
Dim hostname As String = "adventure-works\garrett1"  
Dim webSyncUrl As String = "https://" + publisherInstance + "/WebSync/replisapi.dll"  
  
'Create connections to the Publisher and Subscriber.  
Dim subscriberConn As ServerConnection = New ServerConnection(subscriberName)  
Dim publisherConn As ServerConnection = New ServerConnection(publisherName)  
  
' Create the objects that we need.  
Dim publication As MergePublication  
Dim subscription As MergePullSubscription  
  
Try  
    ' Connect to the Subscriber.  
    subscriberConn.Connect()  
  
    ' Ensure that the publication exists and that   
    ' it supports pull subscriptions and Web synchronization.  
    publication = New MergePublication()  
    publication.Name = publicationName  
    publication.DatabaseName = publicationDbName  
    publication.ConnectionContext = publisherConn  
  
    If publication.LoadProperties() Then  
        If (publication.Attributes And PublicationAttributes.AllowPull) = 0 Then  
            publication.Attributes = publication.Attributes _  
            Or PublicationAttributes.AllowPull  
        End If  
        If (publication.Attributes And PublicationAttributes.AllowWebSynchronization) = 0 Then  
            publication.Attributes = publication.Attributes _  
            Or PublicationAttributes.AllowWebSynchronization  
        End If  
  
        ' Define the pull subscription.  
        subscription = New MergePullSubscription()  
        subscription.ConnectionContext = subscriberConn  
        subscription.PublisherName = publisherName  
        subscription.PublicationName = publicationName  
        subscription.PublicationDBName = publicationDbName  
        subscription.DatabaseName = subscriptionDbName  
        subscription.HostName = hostname  
        subscription.CreateSyncAgentByDefault = True  
  
        ' Specify the Windows login credentials for the Merge Agent job.  
        subscription.SynchronizationAgentProcessSecurity.Login = winLogin  
        subscription.SynchronizationAgentProcessSecurity.Password = winPassword  
  
        ' Enable Web synchronization.  
        subscription.UseWebSynchronization = True  
        subscription.InternetUrl = webSyncUrl  
  
        ' Specify the same Windows credentials to use when connecting to the  
        ' Web server using HTTPS Basic Authentication.  
        subscription.InternetSecurityMode = AuthenticationMethod.BasicAuthentication  
        subscription.InternetLogin = winLogin  
        subscription.InternetPassword = winPassword  
  
        ' Create the pull subscription at the Subscriber.  
        subscription.Create()  
  
        Dim registered As Boolean = False  
  
        ' Verify that the subscription is not already registered.  
        For Each existing As MergeSubscription In _  
        publication.EnumSubscriptions()  
            If existing.SubscriberName = subscriberName Then  
                registered = True  
            End If  
        Next  
        If Not registered Then  
            ' Register the local subscription with the Publisher.  
            publication.MakePullSubscriptionWellKnown( _  
             subscriberName, subscriptionDbName, _  
             SubscriptionSyncType.Automatic, _  
             MergeSubscriberType.Local, 0)  
        End If  
    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  
    subscriberConn.Disconnect()  
    publisherConn.Disconnect()  
End Try

Confira também

Replication Management Objects Concepts
Exibir e modificar propriedades de assinatura pull
Configurar a Sincronização da Web
Subscribe to Publications
Replication Security Best Practices