Erro de Validação - SELECTONEMENU + MYSQL

Caros,
Estou sofrendo há dois dias tentando identificar o erro acima que acontece quando tento gravar o cadastro e seleciono alguma opção vinda do banco no selectonemenu. Consigo salvar sem erro quando simulo o selectonemenu sendo preenchido com um item inserido no próprio corpo do código (Que Não Vem Do Banco). Estou enviando abaixo algumas classes que utilizo no meu projeto. Agradeço os interessados em ajudar.

Segue parte do Código em XHTML e a classe Programa:

 <div class="form-group">
 <h:outputLabel value="Qual o Programa?" for="atdPrograma" styleClass="control-label col-sm-2"/>
 <div class="col-sm-5">
 <h:selectOneMenu value="#{atendimentoController.selected.atdPrograma}">
 <f:selectItem itemLabel="-Selecione-" itemValue=""/>
 <f:selectItems value="#{programaController.items}" var="e" itemValue="#{e}" itemLabel="#{e.pgrNome}" />

 </h:selectOneMenu>
 </div>
 </div>

CLASSE PROGRAMA:

//CLASSE Programa
/*
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* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/

package pacote_jangadeiro;

import java.io.Serializable;
import javax.persistence.Basic;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.Table;
import javax.validation.constraints.Size;
import javax.xml.bind.annotation.XmlRootElement;

/**
*
* @author vai
*/
@Entity
@Table(name = "programa")
@XmlRootElement
@NamedQueries({
@NamedQuery(name = "Programa.findAll", query = "SELECT p FROM Programa p")})
public class Programa implements Serializable {

 private static final long serialVersionUID = 1L;
 @Id
 @GeneratedValue(strategy = GenerationType.IDENTITY)
 @Basic(optional = false)
 @Column(name = "pgr_id")
 private Integer pgrId;
 @Size(max = 30)
 @Column(name = "pgr_nome")
 private String pgrNome;

 public Programa() {
 }

 public Programa(Integer pgrId) {
 this.pgrId = pgrId;
 }

 public Integer getPgrId() {
 return pgrId;
 }

 public void setPgrId(Integer pgrId) {
 this.pgrId = pgrId;
 }

 public String getPgrNome() {
 return pgrNome;
 }

 public void setPgrNome(String pgrNome) {
 this.pgrNome = pgrNome;
 }

 @Override
 public int hashCode() {
 int hash = 0;
 hash += (pgrId != null ? pgrId.hashCode() : 0);
 return hash;
 }

 @Override
 public boolean equals(Object object) {
 // TODO: Warning - this method won't work in the case the id fields are not set
 if (!(object instanceof Programa)) {
 return false;
 }
 Programa other = (Programa) object;
 if ((this.pgrId == null && other.pgrId != null) || (this.pgrId != null && !this.pgrId.equals(other.pgrId))) {
 return false;
 }
 return true;
 }

 @Override
 public String toString() {
 return "pacote_jangadeiro.Programa[ pgrId=" + pgrId + " ]";
 }

 }