To upgrade the Replication Agent for Oracle Log Reader component from LogMiner to XStream APIs, use the ra_admin command with the -u option.
Make sure the primary database version is Oracle11.2.0.3 or later.
Initialize the Replication Agent.
Set the Oracle library path and the XStream JDBC driver in the CLASSPATH environment variable for your platform. See Setting Up the Oracle XStream JDBC Driver.
Shut down the Replication Agent instance and make sure no database operations are running to avoid risking data loss due to missed replication.