How to implement OneToMany LAZY relationship

I am getting a LazyInitializationException: no Session.

I have read numerous forums explaining that a client application cannot use a lazy relationship. One forum suggested to use two Session methods, one to get the parent object and another to get the children.

I have tried to implement this but I am still getting the "Session closed" exception.

Am I doing it wrong or am I missing something else.

PS EAGER fetching is not an option in our environment

Here is the stackTrace:

[java] org.hibernate.LazyInitializationException: could not initialize proxy - no Session
 [java] at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:53)
 [java] at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:98)
 [java] at org.hibernate.proxy.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:133)
 [java] at src.za.co.engineparts.apps.CatEJB.CoUser$$EnhancerByCGLIB$$e4cbc886.getUserName(<generated>)
 [java] at src.za.co.engineparts.apps.CatEJB.testCatBook.main(testCatBook.java:24)

 InitialContext ctx = new InitialContext();
 System.out.println("Program entry point");

 JobCardHomeIntf jobSession = (JobCardHomeIntf) ctx.lookup(JobCardHomeIntf.class.getName());
 JobCard job = jobSession.findById(3);

 CoUserHomeIntf userSession = (CoUserHomeIntf) ctx.lookup(CoUserHomeIntf.class.getName());

 CoUser user = userSession.findByJobCardAssigned(job.getJobCardId());

@Entity
@Table(name="coUser"
 ,schema="dbo"
 ,catalog="EpTest"
, uniqueConstraints = { @UniqueConstraint( columnNames = { "UserCode" } ) }
)

public class CoUser implements java.io.Serializable {


 // Fields

 /**
 *
 */
 private static final long serialVersionUID = 3043149347512263993L;
 private String userCode;
 private Set<src.za.co.engineparts.apps.CatEJB.JobCard> jobCardsAssignedUsers;

 // Constructors

 /** default constructor */
 public CoUser() {
 }

 /** constructor with id */
 public CoUser(String userCode) {
 this.userCode = userCode;
 }

 // Property accessors
 @Id( generate=GeneratorType.NONE)
 @Column(name="UserCode", unique=true, nullable=false, insertable=true, updatable=true, length=20, precision=19, scale=2)

 public String getUserCode() {
 return this.userCode;
 }

 public void setUserCode(String userCode) {
 this.userCode = userCode;
 }
 @Column(name="UserName", unique=false, nullable=true, insertable=true, updatable=true, length=50, precision=19, scale=2)

 @OneToMany(cascade={CascadeType.ALL}, fetch=FetchType.LAZY, mappedBy="assignedUser")

 public Set<src.za.co.engineparts.apps.CatEJB.JobCard> getJobCardsAssignedUsers() {
 return this.jobCardsAssignedUsers;
 }

 public void setJobCardsAssignedUsers(Set<src.za.co.engineparts.apps.CatEJB.JobCard> jobCardsAssignedUsers) {
 this.jobCardsAssignedUsers = jobCardsAssignedUsers;
 }

}


@Entity
@Table(name="JobCard"
 ,schema="cat"
 ,catalog="EpTest"
, uniqueConstraints = { @UniqueConstraint( columnNames = { "JobCardId" } ) }
)

public class JobCard implements java.io.Serializable {

 // Fields

 /**
 *
 */
 private Integer jobCardId;

 // Property accessors
 @Id( generate=GeneratorType.AUTO)
 @Column(name="JobCardId", unique=true, nullable=false, insertable=true, updatable=true, length=255, precision=19, scale=2)

 public Integer getJobCardId() {
 return this.jobCardId;
 }

 public void setJobCardId(Integer jobCardId) {
 this.jobCardId = jobCardId;
 }
}

@Stateless
@Remote (JobCardHomeIntf.class)
@Local(JobCardHomeIntfLocal.class)
public class JobCardHome implements JobCardHomeIntf{

 private static final Log log = LogFactory.getLog(JobCardHome.class);
 // inject
 @PersistenceContext private EntityManager entityManager;
 @EJB private JobCardPriorityHomeIntf jobCardPriorityHome;
 @EJB private JobCardStatusHomeIntf jobCardStatusHome;
 @EJB private CoUserHomeIntf coUserHome;
 @EJB private ReviewHomeIntf reviewHome;

 @SuppressWarnings("unchecked")
 public Collection<JobCard> findByAssignedUserCode(String assignedUserCode) {
 log.debug("getting all JobCard instances with assignedUserCode: " + assignedUserCode);
 try {
 CoUser coUser = coUserHome.findById(assignedUserCode);
 log.debug("get successful");
 return coUser.getJobCardsAssignedUsers();
 }
 catch (RuntimeException re) {
 log.error("get failed", re);
 throw re;
 }
 }