hello
i need some help in EJB

DodAuthorisationHome dodAuthHome = (DodAuthorisationHome)PortableRemoteObject.narrow(context.lookup("DodAuthorisation"), DodAuthorisationHome.class);
DodAuthorisation dodAuthorisation;

now the first line shows the java.lang.ClassCastException
why it occurs tell me plsssssssssssss

Hello Vikas,
              Which app server you are using and can you post remote and home interface.

cheers.

Hello sir
i am using OC4J server
and
my home and remote interface are:--
package model.CMP;
import java.sql.Date;
import javax.ejb.EJBObject;
import java.rmi.RemoteException;
import java.sql.Timestamp;

public interface DodAuthorisation extends EJBObject
{
  String getAuthorisationNo() throws RemoteException;

  String getBrCode() throws RemoteException;

  void setBrCode(String brCode) throws RemoteException;

  String getInvoiceNo() throws RemoteException;

  void setInvoiceNo(String invoiceNo) throws RemoteException;

  Date getInvoiceDate() throws RemoteException;

  void setInvoiceDate(Date invoiceDate) throws RemoteException;

  double getInvoiceValue() throws RemoteException;

  void setInvoiceValue(double invoiceValue) throws RemoteException;

  double getRebookDays() throws RemoteException;

  void setRebookDays(double rebookDays) throws RemoteException;

  String getDelvBranch() throws RemoteException;

  void setDelvBranch(String delvBranch) throws RemoteException;

  String getPoNo() throws RemoteException;

  void setPoNo(String poNo) throws RemoteException;

  Date getPoDate() throws RemoteException;

  void setPoDate(Date poDate) throws RemoteException;

  String getCngrRefNo() throws RemoteException;

  void setCngrRefNo(String cngrRefNo) throws RemoteException;

  String getSafexRefNo() throws RemoteException;

  void setSafexRefNo(String safexRefNo) throws RemoteException;

  String getCnmtNo() throws RemoteException;

  void setCnmtNo(String cnmtNo) throws RemoteException;

  Date getAuthDate() throws RemoteException;

  void setAuthDate(Date authDate) throws RemoteException;

  double getAuthAmount() throws RemoteException;

  void setAuthAmount(double authAmount) throws RemoteException;

  char getFormCYn() throws RemoteException;

  void setFormCYn(char formCYn) throws RemoteException;

  double getDraftAmount() throws RemoteException;

  void setDraftAmount(double draftAmount) throws RemoteException;

  double getChequeAmount() throws RemoteException;

  void setChequeAmount(double chequeAmount) throws RemoteException;

  String getDraftFavourOf() throws RemoteException;

  void setDraftFavourOf(String draftFavourOf) throws RemoteException;

  String getChequeFavourOf() throws RemoteException;

  void setChequeFavourOf(String chequeFavourOf) throws RemoteException;

  String getDraftPayableAt() throws RemoteException;

  void setDraftPayableAt(String draftPayableAt) throws RemoteException;

  String getChequePayableAt() throws RemoteException;

  void setChequePayableAt(String chequePayableAt) throws RemoteException;

  char getCancel() throws RemoteException;

  void setCancel(char cancel) throws RemoteException;

  String getUserName() throws RemoteException;

  void setUserName(String userName) throws RemoteException;

  Date getEntDate() throws RemoteException;

  void setEntDate(Date entDate) throws RemoteException;

  String getModifyBy() throws RemoteException;

  void setModifyBy(String modifyBy) throws RemoteException;

  Date getModifyDate() throws RemoteException;

  void setModifyDate(Date modifyDate) throws RemoteException;
}


***************************************

package model.CMP;
import javax.ejb.EJBHome;
import java.rmi.RemoteException;
import javax.ejb.CreateException;
import javax.ejb.FinderException;
import java.util.Collection;
import java.sql.Date;

public interface DodAuthorisationHome extends EJBHome
{

  DodAuthorisation findByPrimaryKey(String primaryKey) throws RemoteException, FinderException;

  Collection findAll() throws RemoteException, FinderException;

  DodAuthorisation create(String dauthorisation_No, String dbr_code, String dinvoice_no, Date dinvoice_date, double dinvoice_value, double drebook_days,String ddelv_branch, String dpo_no, Date dpo_date, String dcngr_ref_no, String dsafex_ref_no, String dcnmt_no, Date dauth_date, double dauth_amount, char dform_c_yn, double ddraft_amount, double ddcheque_amount, String ddraft_favour_of, String dcheque_favour_of, String ddraft_payable_at, String dcheque_payable_at,char dcancel,String duser_name, Date dent_date, String dmodify_by, Date dmodify_date) throws RemoteException, CreateException;
}
****************************************

Is your home interface bound in jndi using "DodAuthorisation", that'd be first thing I'd check in your ejb jar xml DD.

If you deploy ejb and jsp/servelet on the same server(JBOSS4.0.3) You do not need to copy client.jar files to the jsp's lib folder. If you do it'll give class cast exception.