TransSynchronizationAgent Class

Provides the functionality of the Replication Distribution Agent.

Inheritance Hierarchy

System.Object
  System.MarshalByRefObject
    Microsoft.SqlServer.Replication.TransSynchronizationAgent

Namespace:  Microsoft.SqlServer.Replication
Assembly:  Microsoft.SqlServer.Replication (in Microsoft.SqlServer.Replication.dll)

Syntax

'Declaration
<ClassInterfaceAttribute(ClassInterfaceType.AutoDispatch)> _
<GuidAttribute("adeda98a-bdfc-4029-b6fb-991d6b468395")> _
<ComVisibleAttribute(True)> _
<PermissionSetAttribute(SecurityAction.Demand, Name := "FullTrust")> _
Public Class TransSynchronizationAgent _
    Inherits MarshalByRefObject _
    Implements IDisposable, ITransSynchronizationAgent
'Usage
Dim instance As TransSynchronizationAgent
[ClassInterfaceAttribute(ClassInterfaceType.AutoDispatch)]
[GuidAttribute("adeda98a-bdfc-4029-b6fb-991d6b468395")]
[ComVisibleAttribute(true)]
[PermissionSetAttribute(SecurityAction.Demand, Name = "FullTrust")]
public class TransSynchronizationAgent : MarshalByRefObject, 
    IDisposable, ITransSynchronizationAgent
[ClassInterfaceAttribute(ClassInterfaceType::AutoDispatch)]
[GuidAttribute(L"adeda98a-bdfc-4029-b6fb-991d6b468395")]
[ComVisibleAttribute(true)]
[PermissionSetAttribute(SecurityAction::Demand, Name = L"FullTrust")]
public ref class TransSynchronizationAgent : public MarshalByRefObject, 
    IDisposable, ITransSynchronizationAgent
[<ClassInterfaceAttribute(ClassInterfaceType.AutoDispatch)>]
[<GuidAttribute("adeda98a-bdfc-4029-b6fb-991d6b468395")>]
[<ComVisibleAttribute(true)>]
[<PermissionSetAttribute(SecurityAction.Demand, Name = "FullTrust")>]
type TransSynchronizationAgent =  
    class 
        inherit MarshalByRefObject 
        interface IDisposable 
        interface ITransSynchronizationAgent 
    end
public class TransSynchronizationAgent extends MarshalByRefObject implements IDisposable, ITransSynchronizationAgent

The TransSynchronizationAgent type exposes the following members.

Constructors

  Name Description
Public method TransSynchronizationAgent Creates an instance of the TransSynchronizationAgent class.

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Properties

  Name Description
Public property AltSnapshotFolder Gets or sets the alternate snapshot folder for the subscription.
Public property ComErrorCollection Gets a collection of errors that are generated by the replication agent.
Public property Distributor Gets or sets the name of the instance of Microsoft SQL Server that is acting as the distributor for the subscription.
Public property DistributorAddress Gets or sets the network address that is used to connect to the distributor when the DistributorNetwork property is specified.
Public property DistributorEncryptedPassword Infrastructure. Gets or sets the encrypted password that is used when connecting to the distributor by using SQL Server Authentication.
Public property DistributorLogin Gets or sets the login name that is used when connecting to the distributor by using SQL Server Authentication.
Public property DistributorNetwork Gets or sets the client Net-Library that is used when connecting to the distributor.
Public property DistributorPassword Gets or sets the password that is used when connecting to the Distributor by using SQL Server Authentication.
Public property DistributorSecurityMode Gets or sets the security mode that is used when connecting to the distributor.
Public property DtsPackageFileName Gets or sets the name and path of a Microsoft SQL Server 2000 Data Transformation Services (DTS) package that is used to transform command rowsets before they are applied to a Subscriber.
Public property DtsPackagePassword Gets or sets the owner password that used to access the Microsoft SQL Server 2000 Data Transformation Services (DTS) package specified by the DtsPackageFileName property.
Public property FileTransferType Gets or sets how the initial snapshot files are transferred to the Subscriber.
Public property HostName Infrastructure. Gets or sets the host name used.
Public property LastUpdatedTime Gets the timestamp of the last time that replication agent synchronized the subscription.
Public property LoginTimeout Gets or sets the maximum number of seconds to wait for connections to be established.
Public property MaxDeliveredTransactions Gets or sets the maximum number of transactions that are applied to the Subscriber during a single agent execution.
Public property Output Gets or sets the file name and path of the agent output file.
Public property OutputVerboseLevel Gets or sets the amount of information that is logged by the Distribution Agent in the agent output file.
Public property ProfileName Gets or sets the name of the profile that is used by the agent.
Public property Publication Gets or sets the name of the publication.
Public property Publisher Gets or sets the name of the instance of Microsoft SQL Server that is the Publisher for the subscription.
Public property PublisherDatabase Gets or sets the name of the publication database.
Public property QueryTimeout Gets or sets the number of seconds that are allowed for internal queries to complete.
Public property SecureDistributorEncryptedPassword Infrastructure. Gets or sets the secure encrypted password for the distributor.
Public property SecureSubscriberEncryptedPassword Infrastructure. Gets or sets the secure encrypted password for the subscriber.
Public property SkipErrors Gets or sets a colon-separated list of the error numbers that are to be skipped by this agent.
Public property Subscriber Gets or sets the name of the instance of Microsoft SQL Server that is the subscriber.
Public property SubscriberDatabase Gets or sets the name of the subscription database.
Public property SubscriberDatabasePath Infrastructure. Get or sets the database path for the subscriber.
Public property SubscriberDataSourceType Gets or sets the type of data source that is used as the subscriber.
Public property SubscriberEncryptedPassword Infrastructure. Gets or sets the encrypted password for the subscriber.
Public property SubscriberLogin Gets or sets the login name that is used when connecting to the subscriber by using SQL Server Authentication.
Public property SubscriberPassword Gets or sets the password that is used when connecting to the subscriber by using SQL Server Authentication.
Public property SubscriberSecurityMode Gets or sets the security mode that is used when connecting to the publisher.
Public property SubscriptionType Gets or sets whether the subscription is a push or pull subscription.
Public property UndeliveredCommands Infrastructure. Gets the number of undelivered commands.
Public property UndeliveredTransactions Infrastructure. Gets the number of undelivered transactions.
Public property UseInProcLoader Gets or sets a value that indicates whether to use the BULK INSERT command when applying snapshot files at the subscriber.
Public property WorkingDirectory Gets or sets the working directory from which snapshot files are accessed when File Transfer Protocol (FTP) is used.

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Methods

  Name Description
Public method Abort Infrastructure. Aborts the TransSynchronizationAgent operation.
Public method CreateObjRef Security Critical. (Inherited from MarshalByRefObject.)
Public method Dispose() Infrastructure. Releases all resources used by the current instance of the TransSynchronizationAgent class.
Protected method Dispose(Boolean) Releases all resources used by the TransSynchronizationAgent class.
Public method Equals (Inherited from Object.)
Protected method Finalize Infrastructure. Finalizes the TransSynchronizationAgent. (Overrides Object.Finalize().)
Public method GetHashCode (Inherited from Object.)
Public method GetLifetimeService Security Critical. (Inherited from MarshalByRefObject.)
Public method GetType (Inherited from Object.)
Public method InitializeLifetimeService Security Critical. (Inherited from MarshalByRefObject.)
Public method IsSnapshotRequired Connects to the Distributor and the Subscriber to determine whether a new snapshot will be applied during the next agent synchronization.
Protected method MemberwiseClone() (Inherited from Object.)
Protected method MemberwiseClone(Boolean) (Inherited from MarshalByRefObject.)
Public method Synchronize Starts the Distribution Agent to synchronize the subscription.
Public method ToString (Inherited from Object.)

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Events

  Name Description
Public event ComStatus Infrastructure. Occurs when the Distribution Agent returns synchronization Com status information.
Public event Status Occurs when the Distribution Agent returns synchronization status information.

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Remarks

The TransSynchronizationAgent class supports the ability to programmatically synchronize subscriptions to transactional or snapshot publications.

Examples

In the following example, the Synchronize method is called on the instance of the TransSynchronizationAgent class that is accessed from the SynchronizationAgent property to synchronize the push subscription.

         // Define the server, publication, and database names.
            string subscriberName = subscriberInstance;
            string publisherName = publisherInstance;
            string publicationName = "AdvWorksProductTran";
            string subscriptionDbName = "AdventureWorks2012Replica";
            string publicationDbName = "AdventureWorks2012";

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

            TransSubscription subscription;

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

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

                // If the push subscription exists, start the synchronization.
                if (subscription.LoadProperties())
                {
                    // Check that we have enough metadata to start the agent.
                    if (subscription.SubscriberSecurity != null)
                    {
                        // Synchronously start the Distribution Agent for the subscription.
                        subscription.SynchronizationAgent.Synchronize();
                    }
                    else
                    {
                        throw new ApplicationException("There is insufficent metadata to " +
                            "synchronize the subscription. Recreate the subscription with " +
                            "the agent job or supply the required agent properties at run time.");
                    }
                }
                else
                {
                    // Do something here if the push subscription does not exist.
                    throw new ApplicationException(String.Format(
                        "The subscription to '{0}' does not exist on {1}",
                        publicationName, subscriberName));
                }
            }
            catch (Exception ex)
            {
                // Implement appropriate error handling here.
                throw new ApplicationException("The subscription could not be synchronized.", ex);
            }
            finally
            {
                conn.Disconnect();
            }
' Define the server, publication, and database names.
Dim subscriberName As String = subscriberInstance
Dim publisherName As String = publisherInstance
Dim publicationName As String = "AdvWorksProductTran"
Dim subscriptionDbName As String = "AdventureWorks2012Replica"
Dim publicationDbName As String = "AdventureWorks2012"

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

Dim subscription As TransSubscription

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

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

    ' If the push subscription exists, start the synchronization.
    If subscription.LoadProperties() Then
        ' Check that we have enough metadata to start the agent.
        If Not subscription.SubscriberSecurity Is Nothing Then

            ' Synchronously start the Distribution Agent for the subscription.
            subscription.SynchronizationAgent.Synchronize()
        Else
            Throw New ApplicationException("There is insufficent metadata to " + _
             "synchronize the subscription. Recreate the subscription with " + _
             "the agent job or supply the required agent properties at run time.")
        End If
    Else
        ' Do something here if the push subscription does not exist.
        Throw New ApplicationException(String.Format( _
         "The subscription to '{0}' does not exist on {1}", _
         publicationName, subscriberName))
    End If
Catch ex As Exception
    ' Implement appropriate error handling here.
    Throw New ApplicationException("The subscription could not be synchronized.", ex)
Finally
    conn.Disconnect()
End Try

Thread Safety

The TransSynchronizationAgent class does not support multithreaded apartments. You can specify a single-threaded apartment by declaring the [STAThread] attribute on the method that is the main entry point for the application. This is the default for Microsoft Windows-based applications that are created by using Microsoft Visual Studio.

See Also

Reference

Microsoft.SqlServer.Replication Namespace

Other Resources

NIB Synchronize a Pull Subscription (RMO Programming)

NIB Synchronize a Push Subscription (RMO Programming)

Replication Distribution Agent