Connection Failover Attributes
- Last Updated: May 12, 2026
- 1 minute read
- OpenAccess SDK
- Version 9.0
- Documentation
Note: The ADO and ADO.NET clients are currently available only in OpenAccess SDK 8.1. However, they are compatible with the OpenAccess SDK 9.0 server.
The following table summarizes the connection attributes that control how connection failover works with the ADO Client.
Summary: Connection Failover Attributes for the ADO Client
| Attribute | Characteristic |
| Alternate Servers | A list of alternate OpenAccess SDK servers to which the data provider will attempt to connect if the primary OpenAccess SDK server is unavailable. A port number and an IP address or server name identifying each server are required. |
| Connection Retry Count | Number of times the data provider retries the primary database server, and if specified, alternate servers until a successful connection is established. The default is 5. |
| Connection Retry Delay | Wait interval, in seconds, between connection retry attempts when the ConnectionRetryCount attribute is set to a positive integer. The default is 1. |
| Host | The TCP/IP address or server name of primary OpenAccess SDK server. |
| Load Balancing | Sets whether the data provider will use client load balancing in its attempts to connect to the list of database servers (primary and alternate). If client load balancing is enabled, the driver uses a random pattern instead of a sequential pattern in its attempts to connect. The default is 0 (client load balancing is disabled). |
| Port | Port listening for connections on the primary OpenAccess SDK server. |
See Configuring Connection Failover and Using Client Load Balancing for overviews of connection failover and client load balancing.