1. JPA/Glassfish 3.0.1 java.lang.IllegalStateException: During synchronization stackoverflow.com
My class model contains a class that has relationship tagged with annotations. I took care to use them correctly by adding the famous "cascade=cascadeType.PERSIST". Sometimes it works, but, very often not, ...
2. JPA - Data synchronization java.net
3. Cache synchronization in Toplink JPA 10.1.3.3 java.net