Hi, there:

As a new one to jboss esb. Could anyone be kindly to tell me where is that plugins/org.jboss.soa.esb.oracle.aq directory? and where is that org.jboss.soa.esb.oracle.aq-4.2.jar file? for me to get that aq examples running.

As it said in documents everywhere, however, I can not find that plugins directory anywhere (not in esb, not in soa platform).

you can find in the plugins/org.jboss.soa.esb.oracle.aq directory.
The jar is called org.jboss.soa.esb.oracle.aq-4.2.jar