Replication on the Side (ROS) or Direct Connection feature provides the capability to establish a direct connection with Teradata systems instead of routing connections through Business Continuity Manager. Business Continuity Manager handles requests from sessions connected directly to Teradata-managed systems. This feature introduces greater flexibility and inclusiveness in the replication process within Business Continuity Manager.
This functionality minimizes the necessity to reconfigure all client applications to connect through Business Continuity Manager, simplifying the integration of ROS into existing setups without requiring extensive configuration changes. Moreover, it enhances data integrity and security, thereby mitigating the risks associated with data corruption.
Direct Connections facilitates the replication of changes coming from sessions directly connected to Teradata systems and is the key component of this feature.
In the context of replication, Business Continuity Manager uses the request and locking information from the RSG Metadata request to determine whether replication is necessary. If replication is deemed necessary, Business Continuity Manager employs either SQL Multicast or Change-Data Multicast depending on the replication requirement.
With ROS, there is no routing, but the replication depends on the routing rules associated to your user account.
- Business Continuity Manager can replicate using either managed sessions or direct sessions, but not both simultaneously.
- DBC, TDBCMGMT, TDBCSYNC, and VIEWPOINT users have MetaDataCapture automatically disabled when run in a direct session, resulting in no replication for these users.
- Passive route Balancing Method does not apply to Direct passive sessions.
| Edition | Requirement | ||
|---|---|---|---|
| Business Continuity Manager Version | Teradata Vantage Version | Analytics Database Version | |
| VantageCore | 2.00 | 2.4.3.1 | 17.20.3.20 |
| VantageCloud Enterprise on AWS | 2.00.01 | 2.4.3.1 | 17.20.3.20 |
| VantageCloud Enterprise on Azure | 2.00.01 | 2.4.3.1 | 17.20.3.20 |
| VantageCloud Enterprise on Google Cloud | 2.00.02 | 2.4.4.0 | 17.20.3.20 |
Additionally, specific configuration changes are necessary on both Teradata system and Business Continuity Manager.
To configure ROS on your system, contact Teradata support on https://support.teradata.com.