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Database Connections (Synchronization Services)

Microsoft Synchronization Services for ADO.NET makes at least two connections during synchronization: one to the client and one to the server. Additional connections are required in N-tier and service-based architectures. Synchronization Services makes these connections by using ADO.NET. Be aware of the following behavior:

  • For performance reasons, the DbServerSyncProvider uses ADO.NET connection pooling. Connection pooling can retain a physical connection to a SQL Server database even if synchronization is not running. Typically, this is not an issue. However, if you must drop the physical connection, call ClearPool.
  • Connection strings that are passed to DbServerSyncProvider must always include the name of the database from which tables will be synchronized, as shown in the following example:
    Data Source=localhost; Initial Catalog=AdventureWorks; Integrated Security=True;
    

For information about how to secure connections, see Security Considerations (Synchronization Services).

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