hi,
i just wrote an email to users@openjpa but there doesn't seem to be much 
activity there.
do you know how to declare multiple persistence units?  i created 2 
persistence units inside persistence.xml but it seems to create the 
entities from the second PU in the database of the first one.  my 
persistence.xml is like this.  the operator tables get created inside 
the file database
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://java.sun.com/xml/ns/persistence 
http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
     version="2.0">
     <persistence-unit name="file">
         <jta-data-source>file</jta-data-source>
         <class>uk.me.kissy.file.entities.jpa.Box</class>
<class>uk.me.kissy.file.entities.jpa.Category</class>
<class>uk.me.kissy.file.entities.jpa.CqsReview</class>
<class>uk.me.kissy.file.entities.jpa.Department</class>
<class>uk.me.kissy.file.entities.jpa.Enclosure</class>
<class>uk.me.kissy.file.entities.jpa.Event</class>
<class>uk.me.kissy.file.entities.jpa.EventData</class>
<class>uk.me.kissy.file.entities.jpa.EventType</class>
         <!-- <class>uk.me.kissy.file.entities.jpa.File</class> -->
         <class>uk.me.kissy.file.entities.jpa.Log</class>
<class>uk.me.kissy.file.entities.jpa.Note</class>
<class>uk.me.kissy.file.entities.jpa.Payment</class>
<class>uk.me.kissy.file.entities.jpa.Price</class>
<class>uk.me.kissy.file.entities.jpa.Undertaking</class>
<class>uk.me.kissy.file.entities.jpa.UndertakingType</class>
<class>uk.me.kissy.file.entities.jpa.Workflow</class>
         <properties>
             <property name="openjpa.jdbc.SynchronizeMappings" 
value="buildSchema(ForeignKeys=true)" />
         </properties>
     </persistence-unit>
     <persistence-unit name="operator">
         <jta-data-source>operator</jta-data-source>
<class>uk.me.kissy.file.entities.jpa.operator.Address</class>
<class>uk.me.kissy.file.entities.jpa.operator.Client</class>
<class>uk.me.kissy.file.entities.jpa.operator.Council</class>
<class>uk.me.kissy.file.entities.jpa.operator.Operator</class>
<class>uk.me.kissy.file.entities.jpa.operator.Posttown</class>
<class>uk.me.kissy.file.entities.jpa.operator.Wtr_auth</class>
     </persistence-unit>
</persistence>