Estou fazendo um exemplo, roda normal no servidor glassfish, na hora de salvar no banco postgres da esse erro:
type Exception report
messageInternal Server Error
descriptionThe server encountered an internal error that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: java.lang.RuntimeException: Uncompilable source code - Erroneous sym type: DAO.Conexao.getConexao
root cause
java.lang.RuntimeException: Uncompilable source code - Erroneous sym type: DAO.Conexao.getConexao