Importei o projeto do capítulo 5 do curso JSF-Primefaces e quando executa a PopulaBanco está dando este erro :
ERROR: HHH000319: Could not get database metadata
java.sql.SQLException: java.lang.ClassCastException: java.math.BigInteger cannot be cast to java.lang.Long
.
.
ERROR: java.lang.ClassCastException: java.math.BigInteger cannot be cast to java.lang.Long
Exception in thread "main" javax.persistence.PersistenceException: org.hibernate.exception.GenericJDBCException: Could not open connection