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DataDirect Connect for ADO.NET Data Provider Help

Configuring Connection Failover

  • Last Updated: April 16, 2026
  • 1 minute read
    • ADO.NET
    • Documentation

  1. Specify the primary and alternate servers:

    • Specify your primary server using a connection string.

    • Specify one or multiple alternate servers by setting the Alternate Servers connection string option.

      See Guidelines for Primary and Alternate Servers for more information.

    Note: If using failover with MSCS, which determines the alternate server for failover instead of the data provider, any alternate server specified must be the same as the primary server. For example:

    SQLServerConnection Conn = new SQLServerConnection();
    Conn = new SQLServerConnection("Host=Accounting1;
    Port=1433;Database Name=TEST;User ID=TEST;Password=TEST01;
    Alternate Servers="Host=Accounting1;Port=1433;Database Name=TEST");
    
  2. Optionally, configure the connection retry feature. See Using Connection Retry.

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