Replication Agent requires the Java Runtime Environment (JRE).
Because Replication Agent is a Java-based application, you must install a Java Runtime Environment (JRE) on the Replication Agent host machine. A JRE appropriate for your operating system is automatically installed when you install the Replication Agent software.
Linux, Solaris, and Microsoft Windows platforms —
http://www.oracle.com/technetwork/java/javase/overview/index.html
AIX platforms —
HP-UX platforms —