EJB + JPA

I'm trying to run a MDB that will persist an simple entity that I've already got to persist in a standalone application, using exactly the same entities, but when I try to persist I got an error message, the message say:

java.sql.SQLSyntaxErrorException: 'DTYPE' is not a column in table or VTI 'APP.POSITION'.
Error Code: -1
Call: INSERT INTO POSITION (DTYPE) VALUES (?)
bind => [coordinates]
Query: InsertObjectQuery(Coordinates[Position[id=null], latitude=56.7765, longitude=23.4545, altitude=0.0])

I'm sure the problem can't be the code of entity, I think is some feature in EJB project, but I don't know what to do, if someone already had a similar problem please help me
I'm going mad

thanks

Does the object that you are mapping use inheritance? It looks to me like there's some inheritance or interface mapping that isn't happening correctly against your database.

Just a hunch though.

-Cameron McKenzie

How I've said I got to persist if I try to run out of the conteiner, then I' m not sure if the problem is the JPA code I've writen, I think must be anything more particular from that context
Thanks