While upgrading our Rational Software Architect Designer (Eclipse) several issues came up during the Workplace Migration process. One issue was related to the use of the @Temporal annotation. The issue only showed up because the version of RSAD that we were upgrading to had a more advanced validation for EJBs. Before I go into details on the problem, I want to point out this excellent article on the use of date, time, and timestamp in EJB3 JPA:
http://www.developerscrappad.com/228/java/java-ee/ejb3-jpa-dealing-with-date-time-and-timestamp/
That should clear up why the following piece of code, which showed up in 66 similar instances, triggered errors:
@Temporal(TemporalType.TIMESTAMP)
private Timestamp adjrCreationDtim;
The simple solution was to remove the @Temporal annotations from Timestamp fields.
