Hi, Are you sure you defined a primary key in your entity class. On Fri, 2009-11-06 at 12:54 -0800, Chetana Shenoy wrote: > Hello everyone: > I was working on the HW assignment for LAB 4323. I created the orders > table and an entity class for the table. I included this info in the > persistence.xml. When I run the program, the sql statements in MAIn are > executed but at the end I got the foll. exception : > > Exception in thread "main" javax.persistence.PersistenceException: No > Persistence provider for EntityManager named CustomerServicePU: Provider > named oracle.toplink.essentials.PersistenceProvider threw unexpected > exception at create EntityManagerFactory: > oracle.toplink.essentials.exceptions.PersistenceUnitLoadingException > > Can anyone figure out why I am getting this? > > Any suggestions to fix this is greatly appreciated. > > Thanks, > > > > > > >
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