Good Afternoon, I have been looking around the interwebs but can't seem to find any discussions regarding the advantages / disadvantages of using multiple persistence units in a Java SE environment to connect to a single data source. Does anyone know of a good link? Also, any info/recomendations from the community would be great ... A bit of Background: I am currently working on an application which splits it's functionality across several services, mainly based on the function of the data (basic code tables, product data, employee data, etc ...) and / or an sub-application (Invoicing, etc ...). Each of the services will obviously need to access data from other services, and it is currently designed that each service has it's own Persistence Unit. IOW, basic code tables are "managed" in packaged service with it's own persistence implementation/unit JAR. I am a bit concerned that the various PU's will end up with divergent states of the data, unless they can somehow be synchronized. So, what I'm looking for is any information to help me decide how to best configure the persistence unit(s). Thanks & Best Regards 
John Boblitz ---- Who is General Failure, and why is he reading my hard disk?
