}catch (RemoteException e){
      log.....
      throw e;
    }

      em.getTransaction().setRollbackOnly();

import java.rmi.RemoteException;

import javax.ejb.ApplicationException;

@ApplicationException(rollback=true)
public class CRemoteException extends RemoteException {
  private static final long serialVersionUID = 5677830305379655371L;

  public CRemoteException() {
    super();
  }

  public CRemoteException(String s, Throwable cause) {
    super(s, cause);
  }

  public CRemoteException(String s) {
    super(s);
  }

  @Override
  public String getMessage() {
    // Какой дебил это писал? Я про super.getMessage()
    Throwable detail = this.detail;
    this.detail = null;
    String message = super.getMessage();
    this.detail = detail;
    return message;
  }

  @Override
  public String getLocalizedMessage() {
    return getMessage();
  }

}