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Oracle® SuperCluster M8 and SuperCluster M7 Administration Guide

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Updated: June 2020

XA Affinity

XA Affinity for global transactions ensures that all the database operations for a global transaction performed on a RAC cluster are directed to the same RAC instance. The first connection request for an XA transaction is load balanced using RCLB and is assigned an Affinity context. All subsequent connection requests are routed to the same RAC instance using the Affinity context of the first connection.

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