Connection migration can negatively affect performance as it requires:
Terminating an existing connection on a nonowner instance
Creating a new connection to the instance running the transaction
Saving context information on the existing connection, and then restoring this information on the owner instance following connection migration
To reduce the negative affect of connection migration on performance:
Use logical clusters and workload manager capabilities to bind XA transactions to a specific instance in the cluster so that connection migration is not needed. See Chapter 6, “Managing the Workload.”
Modify applications to avoid unnecessary disconnections and reconnections.
