JDeveloper - problems with Tutorial for Java EE Developers

Hi,
I am trying to start learning Oracle J2EE technologies, and I am using the Oracle "Tutorial for Java EE Developers (10.1.3.1.0)" listed in the Oracle Application Server 10g (10.1.3) page: http://www.oracle.com/technology/tech/java/oc4j/1013/how_to/index.html.
I am having problems in chapter 2, at the creating EJB 3.0 Persistence Entities stage, when using the Create Entities from Tables Wizard. Basically, when I select all the tables from the SRDEMO schema and attempt to create the Java classes, only the first table objects are created - ExpertiseAreas.java and ExpertiseAreasPK.java. I do not get any error messages, so I am not sure why the other table objects are not created.
If I then use the Wizard to select tables individually, the objects are created. However, they appear to be missing some details - specifically the @OneToMany annotation.
Has anyone encountered this same issue, or are there any known issues with this tutorial.
I am using version 10.1.3.4 of JDeveloper, on a 10g (10.2) XE database. I installed the version of JDeveloper without JDK included. I have a Sun Java EE 5 SDK Udate 5 (JDK 6u7) install of JDK.
Thanks,
Fraser

Please refer
http://www.oracle.com/technology/obe/obe1013jdev/10131/10131_ejb_30/ejb_30.htm
http://www.oracle.com/technology/tech/java/oc4j/ejb3/howtos/howtoejb30mappingannotations/doc/how-to-ejb30-mapping-annotations.html#onetomany

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