Check session ID

Hello there,
for a special locking thing i need the possibility to store my own BSP session ID in a table and to check if sessions of other users have expired/terminated.
How can i get my own session ID ?
How can i check if a session ID is still activ ?
thanks for any help,
Stefan.

Hi Stefan,
How can i get my own session ID ?
RUNTIME->SESSION_ID has the sessionid.
Regards,
Anubhav

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How to forward to another page when checking session managed bean in jsf 2

When I do it in jsp page I write:
<c:if test="${sessionScope.role != 'user'}">
    <jsp:forward page="login.jsp" />
</c:if>And in jsf 2.0 I use ManagedBean as session and I want to check session in per page. But I cannot do it in jsf 2.0 (.xhtml). Please help me. Thanks
Edited by: tuanbs on May 12, 2010 1:19 AM

I included this code in the PartnerManagementBean.java:
     public class PartnerManagementBean {
     protected List<SelectItem> partners;
//other properties....
public String addPartner() {
// code to insert new partner into db
// Add the newly added partner to the partner list
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Still, the new partner added is not reflecting in the session variable and hence it is not reflecting when I look for the new partner in "Modify Partner" page.
What could be the solution ?

Help Needed in checking session variable

In a sample site, I am calling a bounded task flow from an unbounded task flow. In the called taskflow the default activity is a router which checks the session variable, and the home page will be loaded only if the session variable is not null. If session variable is null router will lead to a page dispalying 'session expired'. But even after clearing the session if I copy pasted the previous url, the home page is loading. But when I call bounded taskflow from a bounded taskflow, it is working fine. Can anyone suggest any solution? Thanks in advance

Thanks for the reply. I'm using jdev 11.1.1.5.0.. I'm just trying with a sample example. I have a login page and when the user logins, the user name is stored in session. the loginpage view activity is in adfc config unbounded taskflow. The login credentials is validated in a backing bean and based on the return value, if the login is valid, a bounded taskflow 'hometaskflow' is called. In this bounded taskflow, the default activity is a router wchich checks the username stored in session. If the username is not null it will lead to the 'homepage' view. Else if it is null it will lead to a 'sessionexpired' view.
In the java class of login page I'm accessing the session variable as shown
public Username getSessionBean()
Username username =
(Username)resolveExpression("#{Username}");
return username;
public static Object resolveExpression(String expression)
FacesContext facesContext = FacesContext.getCurrentInstance();
Application app = facesContext.getApplication();
ExpressionFactory elFactory = app.getExpressionFactory();
ELContext elContext = facesContext.getELContext();
ValueExpression valueExp =
elFactory.createValueExpression(elContext, expression,
Object.class);
return valueExp.getValue(elContext);
On login button click the function being executed is as shown
public String onLoginClick() {
if(String.valueOf(itUserName.getValue()).equals("admin")
&& String.valueOf(itPassword.getValue()).equals("admin"))
Username username=getSessionBean();
username.setUsername(itUserName.getValue().toString());
return "success";
else {
return "invalid";
And to set username as null on logout, I used this function on logout click
public void clearSession()
Username username=getSessionBean();
username.setUsername(null);
The EL expression used to check the value of session variable is
#{sessionScope.Username.username==null} outcome is expired
#{sessionScope.Username.username!=null} outcome is active
This worked when I used in a bounded taskflow, which is being called from another bounded taskflow. But not working in this scenario...

Checking session data

I want to require a visitor to visit certain pages on a site in sequence, and thought the easiest way to do this would be to set a session attribute and then check it on any of the following pages. Something like <%session.setAttribute("module", 1);%>I'm not an accomplished programmer and wondered if anyone would be so kind as to help me out with the syntax of the expression and statement in order to do what I explained earlier. For example, if the session attribute does not equal 1 when someone loads module page 2, then they should be redirected back to moduel page 1. Else the attribute would be set to 2, and they could move on to module 3.

Seems what you really want is a Front Controller. Which should probably be a Servlet rather than JSP, if you know Java, it will be much easier to code and test that way. If you don't know Java you are going to have to learn it for either the Servlet or JSP approach, but the Servlet (IMO) would be a cleaner approach to learn in.
In the mean time, you should look up "Model View Controller" patterns, the 'Front Controller' pattern. These things tend to be unique for each application, so giving you code will be useless. But once you understand the pattern you should better be able to create your own solution (or find one that does it for you).

Checking Session in JSP without creating a new one

Hello, I am trying to convert some old 0.91 JSP's to 1.0,1.1
In the old versions, there is a SERVLET tag that was used to call a servlet that checked to see if the user had a valid session, and if they didn't it would redirect them to a login page where they could login and their session would get certain data put into it so that things would work.
In 1.0/1.1 I see that the servlet tag has been replaced along with the BEAN tag. I need a good way to check the session to see if it is valid, without creating a new one if it is not, so that I can redirect them to the correct login page so everything gets initialized properly.
I know this seems like a broken way to do things, but I am having to do maintenance/upgrade on this and I don't have time to go through the whole thing and make it work differently.
Anyway, any info anyone can give me would be greatly appreciated.
If you need any further info from me about what I am doing, don't hesitate to ask for it. I REALLY need some help here. Thanks!

The method isNew() works well but you can use this
session=pageContext.getSession().....if earlier you had put in some value into a valid session, then redirecting becomes easy as you can check it this way.....
<%
session=pageContext.getSession();
String sess_id=(String) session.getValue("session_id");
if(sess_id==null)
%>
<jsp:forward page="....." />
<%
else
// do whatever required
%>

Checking session variables

I have an external login service that I'm using to authenticate users. After logging in, I get an XML file from which I can pull things like user ID and rights.
The login page redirects to an index page in another folder (which is protected by the authentication service) and on that page, I have a <cfif> statement that looks at rights.
The rights returned are "J" (for judge) and "A" (for admin), which I'm setting as the session variable: session.rights
If I do this:
<cfif session.rights eq "A">
admin section
<cfelseif session.rights eq "J">
judge section
<cfelse>
redirect to the login page
</cfif>
The else is what triggers. If I cfoutput #session.rights# I get J, but for some reason, J does not equal J. I've tried trimming it and everything, to no avail.
Any ideas?

Yeah, I've trimmed everything everywhere, to no avail.
Here's the dump result:
struct
emailaddr
[empty string]
newitem
1
rights
xml element
XmlName
TPEA_USER_TYPE
XmlNsPrefix
XmlNsURI
XmlText
J
XmlComment
XmlAttributes
struct [empty]
XmlChildren
sessionid
f0306d37e90bce8a818d7d7843e36516f1e7
tpeauser
<?xml version="1.0" encoding="UTF-8"?> <NAME_FIRST>Dave</NAME_FIRST> <?xml version="1.0" encoding="UTF-8"?> <NAME_LAST>Johnson</NAME_LAST>
trackingno
0
upacsid
[empty string]
upacsserver
[empty string]
urltoken
CFID=26143&CFTOKEN=6071485a4b7e13-F5282421-A324-841F-59919221D2C51604&jsessionid=f0306d37 e90bce8a818d7d7843e36516f1e7
userid
xml element
XmlName
USER_ID
XmlNsPrefix
XmlNsURI
XmlText
25481
XmlComment
XmlAttributes
struct [empty]
XmlChildren

Batch/Maxl File to check user session in Essbase and delay batch by 15 m

Hi,
I want to write a maxl file which will check session for any user in Essbase.
If any session is active batch File will be delayed by 15 minutes.
Please let me know how i will achive this. (Syntax will be helpful).
Thanks,
Ajay Singh

Hi,
Thanks for your reply,I want to know the active users for particular Application.
If any user is active and if I am able to find it using maxl then I have batch file which suppose say runs at 10.00 AM
then that batch file i will delay by 15 min using cmd.
Can you give me maxl and cmd for it.
Thank,
Ajay Singh

Edit postDelete postReport this postReply with quote ATP check but the comm

hi , all guys :
when I create the pp-pi order , first i use the batch determination to allocate the component
batch , then i do the ATP check , but the committed quantity always is zero ,the ATP alway does
not support confirm quantity (co09 the confirm quantity always is zero),so when i create the other pp-pi order the stock quantity always cover the reqirements quantity of components
in the mater data , i use the ATP group is 02 (the customizing is standard) i think the ATP scope is irrelative to this issue .
in the order type control parameters , i use the ATP check
for example :
the componet 100-200 have three batchs :
batch: 20100501 quantity 30 kg
batch: 20100502 quantity 40 kg
batch: 20100601 quantity 40 kg
now , the requirment of component 100-200 is 100 kg
the batch determination conditions is self expiration .
so i throght the batch determination and batch split to allocate the bacth and quantity is
batch: 20100501 quantity 30 kg
batch: 20100502 quantity 40 kg
batch: 20100601 quantity 30 kg
after allocating , i run the ATP check ,BUT the COMMITED QUANTITY ALWAYS IS ZERO .
I don't know why !!! ,where can configure the ATP confirm quantities (committed quantities) the in the customizing
can you give help me!!!
thanks!!!
best regards

Davis:
Check in MRP Group settings, Availability Check session, flag activate full confirmation logic. Test activate full confirmation logic.
Regards,
Ricardo

Session Login and Logout in jsp page

hi
i am developing jsp page
i completed except logout.jsp page
my login page is in Jsp format and then business Logic in servlet and then get method & set method in bean.java
i have login and then it sucess page there i have singout button
if i sign out it should go to login page
how to do
how to make session invalidate
how to get session id
i have one more doubt i should check session invalidate each jsp page
regarding session login and logout in jsp
if anybody knows please give me a piece of code regarding login and logout
Regards
Akshatha

This is part of your filter class now you need login.jsp page
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <link rel="Stylesheet" type="text/css" href="/PAS/css/site.css"/>
    <title>Automation System | Login Page</title>
</head>
<body>
<div align="center">
    <h1>Photint Automation System</h1>
</div>
<br/><br/><br/>
<center>
    <table border="1" cellpadding="0" cellspacing="0" width="40%" bgcolor="FFFFFFFF">
        <thead>
            <tr>
                <th align="left" height="30"> <h3> Login</h3></th>
            </tr>
        </thead>
        <tbody>
            <tr>
                <td>
                    <div align="center">
                        <form name="LOGIN" action="/PAS/LoginServlet" method="POST">
                            <table border="0">
                                <tbody>
                                    <tr>
                                        <td height="15"></td>
                                        <td height="15"></td>
                                        <td height="15"></td>
                                        <td height="15"></td>
                                    </tr>
                                    <tr>
                                        <td height="30"></td>
                                        <td align="right" height="30">User Name : </td>
                                        <td align="left" height="30"><input type="text" name="USERNAME" value="" size="35" /></td>
                                        <td height="30"></td>
                                    </tr>
                                    <tr>
                                        <td height="30"></td>
                                        <td align="right" height="30">Password : </td>
                                        <td align="left" height="30"><input type="password" name="PASSWORD" value="" size="35" /></td>
                                        <td height="30"></td>
                                    </tr>
                                    <tr>
                                        <td height="50"></td>
                                        <td height="50"></td>
                                        <td align="center" height="50"><input type="submit" value="Login" name="Login" /> <input type="reset" value="Reset" name="Reset" /></td>
                                        <td height="50"></td>
                                    </tr>
                                </tbody>
                            </table>
                        </form>
                    </div>
                </td>
            </tr>
        </tbody>
    </table>
</center>
<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
<br/><br/><br/>
<center>Copyright © 2009 Photint FZ LLC</center>
<center>Powered by Ali Jamali</center>
<center>Version : 1.0</center>
</body>
</html>And you need loginServlet.java
package com.ali.util.filter;
import com.ali.entity.user.UserEntity;
import com.ali.util.HibernateUtil;
import java.io.IOException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
public class LoginServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;
    protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String username = request.getParameter("USERNAME");
        String password = request.getParameter("PASSWORD");
        if (username == null || username.length() == 0) {
            System.err.println(" Username textfeild is empty ..... !");
            RequestDispatcher dispatcher = request.getRequestDispatcher("Pages/user/LogIn.jsp");
            dispatcher.forward(request, response);
            return;
        if (UserRegistry.isUserLoggedIn(username)) {
            System.out.printf("User [%s] is already logged in. \n", username);
            RequestDispatcher dispatcher = request.getRequestDispatcher("Pages/user/LogIn.jsp");
            dispatcher.forward(request, response);
            return;
        UserEntity user = null;
        try {
            user = (UserEntity) HibernateUtil.load(UserEntity.class, username);
            if (user == null || !user.getPassword().equals(password)) {
                RequestDispatcher dispatcher = request.getRequestDispatcher("Pages/user/LogIn.jsp");
                dispatcher.forward(request, response);
                System.err.println(" Password or username is not valid ..... !");
                return;
        } catch (Exception e) {
            e.printStackTrace();
            RequestDispatcher dispatcher = request.getRequestDispatcher("Pages/user/LogIn.jsp");
            dispatcher.forward(request, response);
            return;
        HttpSession session = request.getSession();
        System.err.println(request.getRemoteAddr());
        session.setAttribute("username", user.getFirstName());
        session.setAttribute("userType", user.isAdmin());
        UserRegistry.logInUser(username);
        response.sendRedirect("/PAS/index.jsp");
}finally is you need to just one user can be online at time or need to know how many user & who is online you should at this class also
package com.ali.util.filter;
import java.util.ArrayList;
import java.util.List;
public class UserRegistry {
    private static final List loggedInUsers = new ArrayList();
    public static void logInUser(String username) {
        loggedInUsers.add(username);
    public static void logoutUser(String username) {
        if (isUserLoggedIn(username)) {
            loggedInUsers.remove(username);
    public static boolean isUserLoggedIn(String username) {
        return loggedInUsers.contains(username);
}If you have any more Q. or any comment , Most welcome
Thanks
Ali Jamali

How do you update multiple items in a JSP that are only checked...

I have list of items in my jsp pages and that are being generated by the following code
and I want to be able to update multiple records that have a checkbox checked:
I have a method to update the status and employee name that uses hibernate that takes the taskID
as a paratmeter to update associated status and comments, but my issue is how to do it with multiple records:
private void updateTaskList(Long taskId, String status, String comments) {
TaskList taskList = (TaskList) HibernateUtil.getSessionFactory()
               .getCurrentSession().load(TaskList.class, personId);
taskList.setStatus(status);
taskList.setComment(comments);
HibernateUtil.getSessionFactory().getCurrentSession().update(taskList);
HibernateUtil.getSessionFactory().getCurrentSession().save(taskList);
<table border="0" cellpadding="2" cellspacing="2" width="98%" class="border">
     <tr align="left">
          <th></th>
          <th>Employee Name</th>
          <th>Status</th>
          <th>Comment</th>
     </tr>
     <%
          List result = (List) request.getAttribute("result");
     %>
     <%
     for (Iterator itr=searchresult.iterator(); itr.hasNext(); )
          com.dao.hibernate.TaskList taskList = (com.dao.hibernate.TaskList)itr.next();
     %>
     <tr>
          <td> <input type="checkbox" name="taskID" value=""> </td>
          <td>
               <%=taskList.empName()%> </td>
          <td>
               <select value="Status">
               <option value="<%=taskList.getStatus()%>"><%=taskList.getStatus()%></option>
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                    <option value="Closed">Closed</option>
               </select>
</td>
          <td>
               <input type="text" name="Comments" MAXLENGTH="20" size="20"
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     </tr>
<%}%>
_________________________________________________________________

org.hibernate.exception.GenericJDBCException: could not load an entity: [com.dao.hibernate.WorkList#2486]
org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:91)
org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:79)
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
org.hibernate.loader.Loader.loadEntity(Loader.java:1799)
org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:93)
org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:81)
org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:2730)
org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:365)
org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:346)
org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:123)
org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:161)
org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:87)
org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:889)
org.hibernate.impl.SessionImpl.load(SessionImpl.java:808)
org.hibernate.impl.SessionImpl.load(SessionImpl.java:801)
com.web.UpdateWorkListAction.execute(Unknown Source)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
before I was running a single update as below and it worked fine:
session.beginTransaction();
int taskId = Integer.parseInt(request.getParameter("taskId"));
String action_taken = request.getParameter("action_taken");
WorkListErrors worklistErrors
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worklistErrors.setAction_taken(action_taken);
session.update(worklistErrors);
session.save(worklistErrors);
session.getTransaction().commit();
but when I try an an update on multiple records it does work when I have a check box checked :
session.beginTransaction();
int taskId = Integer.parseInt(request.getParameter("taskId"));
String action_taken = request.getParameter("action_taken");
WorkListErrors worklistErrors
= (WorkListErrors) session.load(WorkListErrors.class, new Integer(taskId));
worklistErrors.setAction_taken(action_taken);
session.update(worklistErrors);
session.save(worklistErrors);
session.getTransaction().commit();
session.beginTransaction();
String[] tickedTaskId = request.getParameterValues("tickedTaskId");
String[] taskId = request.getParameterValues("taskId");
String[] action_taken = request.getParameterValues("action_taken");
for(int i=0; i<tickedTaskId.length; i++) {
for(int j = 0; j < taskId.length; j++) {
if(tickedTaskId.equals(taskId[j])) {
WorkListErrors worklistErrors
= (WorkListErrors) session.load(WorkListErrors.class, tickedTaskId[i]);
worklistErrors.setAction_taken(action_taken[j]);
session.update(worklistErrors);
session.save(worklistErrors);
session.getTransaction().commit();
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session.close();

Implementing session timeout in JSP - - Urgent help !

Hi
I have a requirement where I need to write a session timeout functionality in a JSP such that the page is redirected to a different page if there is no activity for 5 min.
I tried the following :
1.On the onload of my JSP, i created a new session from the current request using the following code snippet :
          HttpSession pSession = request.getSession(true);
          pSession.setAttribute("loggedin","true");
          pSession.setMaxInactiveInterval(10);
2. Then on any action performed on the JSP, i called the collowing JS function before invoking the server side code.
/** function to check the user session **/
function fnChkSession()
     alert('Inside check session');
     <%
          try
               System.out.println("The value of the session var loggedin : "+pSession.getAttribute("loggedin").toString());
               System.out.println(" getMaxInactiveInterval() value is : "+pSession.getMaxInactiveInterval());
          catch (Exception e)
               System.out.println("** Inside the fnChkSession exception catch block **");
          if (pSession.getValue("loggedin") == null)
     %>
          alert('Session has expired');
          document.forms[0].submit();
     <% } %>
But when I execute this code ,even after 10 secs my session seems to be alive.I can retrieve the session attribute after 10s.
I also tried setting the session-timeout value in the web.xml. It didnt work.
Can anyone pls help me on how to proceed further on this.
Thanks
Arun B

You are confusing java with javascript.
These two things are not the same.
The lifecycle goes something like this
1 - Request is made to server
2 - Java/JSP runs java code, produces HTML page
3 - java stops running
4 - html is sent to browser, and javascript starts running.
You cannot call java code from browser events (such as onload, onclick, onchange...) The only way to run java code again is to submit a request (normally by submitting a form, or clicking a link. )
If you want a javascript solution, in IE, use the window.setTimeout() method to execute some javascript code after a certain period of time.
A more generic approach would be to use the refresh header. Set the timeout for the refresh header to be 300 seconds. If the user stays on the same page for more than 5 minutes, it will redirect to the new page.
Hope this helps,
evnafets

When we have to go for session method, when we have to go for call transact

when we have to go for session method, when we have to go for call transaction method if i have a 3000 records in flat file. which is better? why

Data Transfer
During the process of data transfer, data is transferred into the SAP R/3 System. This transfer is from an external system to SAP R/3 system. Whenever you transfer data from an external system into an R/3 System, you can use data transfer because it is installed and regularly transfers data from an external system into an R/3 System.
As discussed, with the help of BDC, you can transfer the required data from a non-SAP system to an SAP system. For this kind of data transfer you are required to write an ABAP program. This ABAP program would help to export the concerned data to a sequential dataset file. The data in this file has to be stored. This should be stored in a format, which is acceptable to SAP batch input program. But, to transfer data from a SAP system to another SAP system, you can take the aid of RFC or CPI-C.
SAP application supports the data transfer of numerous SAP business objects. The said data transfer program specifies the data format definition, which is necessary to import the data into the R/3 System. There are three methods available for transferring data:
Direct Input:
In this method the SAP function modules execute the consistency checks. However, there are other means of checking with the help of screens. The Direct Input Method has considerable performance advantages.
Call Transaction:
In this method you can check the data consistency with the help of screen logic.
Batch Input Session:
In this method data consistency is checked with the help of screen logic.
Direct Input Method
Among the methods of data transfer through BDC, direct input method is the one that is used, especially in case of transferring large amount of data. In order to enhance the batch input procedure, the system offers you with the direct input technique.
There is a distinction between the batch input technique and this technique. Unlike batch input technique, this technique does not create sessions. Instead, it stores the data directly. Moreover, it does not process screens. The data has to be entered directly into the corresponding database tables. The system calls a number of function modules which execute necessary checks, if any required. In the case of errors, the direct input technique has a facility to restart the entire mechanism. However, if you want to restart the entire mechanism in case you faced an error, then direct input programs must be executed in the background only. One has to use program RBMVSHOW or Transaction BMV0 to maintain and start these programs.
Call Transaction Method
Call Transaction method is another method used for Data Transfer. In this type of method your program will use the ABAP statement CALL TRANSACTION USING in order to run a SAP transaction. In this type external data need not be deposited in a session for being processed later on. Instead, the entire batch input process takes place inline in your program.
Here, the data transfer program must convert the data that has to be transferred into the SAP system. This is as per requirement by the SAP data structure or the transaction which is using it. It is to be remembered that a conversion of the data types may be necessary at different times during the process.
Suppose there is a data type mismatch then you have to convert the data types to type C. In this regard the data transfer program should be capable of exporting the data in SAP format to the sequential file. At the time of uploading the data into the SAP system, the BDC program reads the data from the abovementioned sequential file.
Batch Input Session Method
This is the third method for data transfer. If you use the batch input method to transfer data, then you should remember that an ABAP program has to read the external data which is to be entered in the R/3 System. Subsequently, it stores the concerned data a "batch input session." The batch Input session records the actions which are required in the process of transferring data into the system. This can be done by using normal SAP transactions.
As soon as the program generates the said session, you will be able to run the session in order to execute the SAP transactions in it. Moreover, you can start the session, and at the same time, can monitor a session with the help of batch input management function. For this you have to choose:
System à Services à Batch input. Moreover, you can have the session run in the background processing.
Writing a Data Transfer Program
If you want to write a data transfer program, you have to follow the steps mentioned below.
Firstly, you will analyze the structure of the existing data. Subsequently, your job is to specify the conversions, which are essential to fill the SAP data structures.
Secondly, you have to generate the SAP data structure. In case the program is written in ABAP, you will require only the required tables in the concerned program with the help of TABLES statement.
Thirdly, you will have to initialize the SAP data structure.
Fourthly, fill the structure with data, performing any conversions and error checking that are required.
Finally, you will write the sequential file. In the SAP system this sequential file is typically required for making the data available to the batch input program.
Batch Input Method
Batch input method is a type of data transfer method. It is used for bulk data transfer; it is one of the primary ways by which data can transferred into the R/3 System. This method is not for near real-time data transfers.
There are various typical uses of batch input. One of the ways includes the one-time import of data. This import of data is from a legacy system into a newly installed R/3 System. In addition to it, another typical use is for periodic (i.e. hourly, daily..., and so on) transfers of data. These transfers are from external systems or legacy systems which are still in use into R/3 system where all enterprise data is consolidated.
The R/3 applications deliver different programs for batch input, which are ready to be used. However, in some cases a customer has to write his or her own batch input program. This is required in order to convert the concerned data from a legacy System or from a proprietary format into an R/3 data format.
The process flows for a batch input are discussed below.
Data Transfer Decision-Making: It is with a decision to transfer data from an external source into R/3 that the process of batch input begins. It is probable that the external source may be a legacy system that is being replaced. A one-time bulk data transfer is foreseen in this regard. Alternatively, the external source may be an external system that is to remain in use. In this case, a regularly recurring bulk data transfer is foreseen.
Setting up Batch-Input for Data Transfers: If R/3 standard one-time or regular data transfers are required, then by means of customizing settings in the R/3 Customizing System in SAP ASAP set up will occur. You must set up custom batch input procedures by hand, which means the system administrator must schedule the data conversion program that creates the batch input session. The system administrator and the batch input programmer must determine the following: how frequently data is made available from the external system, how frequently the conversion program should run, and whether the conversion program runs in R/3 (ABAP program) or in a host system (external program).
Processing Batch Input Sessions: When a batch input session is processed, then the actual transfer of data into R/3 takes place. Little attention is required in processing of batch input sessions by the system administrator. Usually, the starting of batch input sessions is automated by the system administrator. If necessary, the administrators can also start batch input session explicitly from transaction SM35.
Checking Batch Input Sessions: For a system administrator the routine activity is to check daily or more frequently in transaction SM35 whether all batch input sessions have been completed successfully. It is the schedule for running batch input sessions on which the schedule for checking sessions depends upon. For doing this check the R/3 System provides easy-to-use batch input management tools.
Analyzing Errors: It is the duty of the system administrator to analyze the problem if one or more transactions in a session end in errors. Usually, the assistance of the affected data entry specialist or department for this analysis will be needed by the system administrator. In the situation where the problem was caused by incorrect data conversion or incorrect generation of the batch input session then the programmer who wrote the data conversion program may also need to be involved.
Error Handling in Batch Input Method
It is found that most problems usually fall into one of the following two categories discussed below.
In this case either required data is missing from the batch-input session or invalid data has been included in the session. Errors in the data conversion program or the presence of unexpected types of data or incorrect data in the legacy database are the possible external causes of this type of problem. Within R/3, the causes for this type of problem include incorrect or incomplete customizing in an application. For example, a legacy data type may not have been foreseen in the check table entries made in application customizing.
This case mainly includes technical/programming problems. The data is entered by a batch input session by running R/3 transactions non-interactively. Therefore, a typical technical or programming problem is the incorrect identification of one of the data fields in a transaction. Thus, the conversion program may not fill a required data field or may have provided invalid values.
Conclusion
I have gone through the details of batch data communication and various methods used to transfer data. One can make use of BDC to transfer data from a SAP to SAP system. In addition, it can transfer data from a non SAP system to SAP system too. I have discussed the various methods of BDC and the error handling in the respective methods.
Thanks,
Shankar

Corrupt Session State? - Apex form posts text value as Null

Recently I've discovered an issue with our Apex installation in which any value chosen as a source for a text field ends up being posted as a null to the database.
We are running APEX version 3.2 within an Oracle 10.2.0.4 database using the Oracle HTTP Server from the 10g companion disk.
At first glance, everything appears to function as expected; I have created a simple table called "oracle_sr" with 2 columns both not null:
SQL> desc capacity.oracle_sr
Name Null? Type
ORACLE_SR_ID NOT NULL NUMBER
TIMESTAMP NOT NULL DATE
Within APEX the form wizard was used to create a form on this table.
After executing the pages and entering a value for the timestamp field I can create records without issue.
The issue arises when I choose a source value for the timestamp field.
Any of the source options result in the same error (including a static value) so I will focus on the SQL Query for the source as:
select sysdate from dual;
This should substitute the system date within the timestamp text field when the page is executed.
As expected, the value appears in the text box but when I submit the form to create the record I receive the error:
ORA-01400: cannot insert NULL into ("CAPACITY"."ORACLE_SR"."TIMESTAMP")
I have been working with APEX for quite some time and have successfully used this technique in many applications but just started to see this error over the past few days. What is particularly odd about this message is that default "not null" validations created by the form wizard sees the timestamp filed as having a value. The session state information included below is reporting a value yet the database is throwing the ORA-01400.
Has anyone experienced a similar issue? I've spent a fair amount of time trying to research this issue but cannot seem to find any similar posts.
I have included the debug output from my test page, from what I can see, there does seem to be a value associated with the timestamp filed:
0.00: A C C E P T: Request="CREATE"
0.00: Metadata: Fetch application definition and shortcuts
0.00: NLS: wwv_flow.g_flow_language_derived_from=FLOW_PRIMARY_LANGUAGE: wwv_flow.g_browser_language=en-us
0.00: alter session set nls_language="AMERICAN"
0.00: alter session set nls_territory="AMERICA"
0.00: NLS: CSV charset=WE8MSWIN1252
0.00: ...NLS: Set Decimal separator="."
0.00: ...NLS: Set NLS Group separator=","
0.00: ...NLS: Set date format="DD-MON-RR"
0.01: ...Setting session time_zone to -06:00
0.01: Setting NLS_DATE_FORMAT to application date format: DD-MON-RR
0.01: ...NLS: Set date format="DD-MON-RR"
0.01: Fetch session state from database
0.01: ...Check session 2303701116904676 owner
0.01: Setting NLS_DATE_FORMAT to application date format: DD-MON-RR
0.02: ...NLS: Set date format="DD-MON-RR"
0.02: ...Check for session expiration:
0.02: ...Metadata: Fetch Page, Computation, Process, and Branch
0.02: Session: Fetch session header information
0.02: ...Metadata: Fetch page attributes for application 109, page 50
0.02: ...Validate item page affinity.
0.02: ...Validate hidden_protected items.
0.03: ...Check authorization security schemes
0.03: Session State: Save form items and p_arg_values
0.03: *...Session State: Save Item "P50_ORACLE_SR_ID" newValue="" "escape_on_input="N"*0.03: *...Session State: Save Item "P50_TIMESTAMP" newValue="26-MAY-09" "escape_on_input="N"*
0.03: ...Session State: Save "P0_CURRENT_PERSONNEL_ID" - saving same value: "1"
0.03: ...Session State: Save "P0_OFFSET" - saving same value: "0"
0.03: ...Session State: Save "P0_ACTIVE_WEEK" - saving same value: "24-MAY-09"
0.03: Processing point: ON_SUBMIT_BEFORE_COMPUTATION
0.03: Branch point: BEFORE_COMPUTATION
0.03: Computation point: AFTER_SUBMIT
0.03: Tabs: Perform Branching for Tab Requests
0.03: Branch point: BEFORE_VALIDATION
0.03: Perform validations:
0.03: ...Item Not Null Validation: P50_TIMESTAMP
0.04: Branch point: BEFORE_PROCESSING
0.04: Processing point: AFTER_SUBMIT
0.04: ...Process "Get PK": PLSQL (AFTER_SUBMIT) declare function get_pk return varchar2 is begin for c1 in (select ORACLE_SR_SEQ.nextval next_val from dual) loop return c1.next_val; end loop; end; begin :P50_ORACLE_SR_ID := get_pk; end;
0.04: ...*Session State: Saved Item "P50_ORACLE_SR_ID" New Value="6"*
0.04: ...Process "Process Row of ORACLE_SR": DML_PROCESS_ROW (AFTER_SUBMIT) #OWNER#:ORACLE_SR:P50_ORACLE_SR_ID:ORACLE_SR_ID|IUD
0.04: Show ERROR page...
0.04: Performing rollback...
ORA-01400: cannot insert NULL into ("CAPACITY"."ORACLE_SR"."TIMESTAMP")
Unable to process row of table ORACLE_SR.
Return to application.
Any thoughts would be appreciated.
Thank you,
Justin.

If you changed the Source Type of an item from Database Column to something else, then it cannot participate in the Automated Row Fetch/Automatic Row Processing (DML) choreography. You should leave the Source Type as it was and change the item's Default Value to populate it when the ARF process fetches a null for the column.
Scott

Application Items/Session State Values and Page Branching

I have users coming into a specific page in my application, passing in a value on the url that sets the value of an application item, where a validation routine occurs. If their session validates, I want to send them to one page, if it does not, I want to send them to a login error page.
During validation, I am setting the values of several application items so that these values can be saved and used throughout their session. The values appear to be setting correctly. I am concerned that setting the application items may not be limiting these values to a particular session. So, I have also tried setting the setting session state variables with code like:
apex_util.set_session_state ('F203_REQ', vReqID);
I found it curious though when I ran this page, not trying to branch so I could check session state, these values showed up as being application items and I saw nothing under session variables.
The problem I am having is that once validated I don't know how to branch to these other pages. I have tried adding some javascript in the header to force a page submit so that I could use a branch setup on the page. However, when it comes time to evaluate the branches (it's using one of the application item values I set earlier), I'm getting an error that no branch has been provided. Further research suggests the application item values are being cleared on the page submit.
So, (1) I either need to know how to preserve those values on submit so the page branch works or (2) I need to branch to the new page without using a page submit and instead doing that in a some code (assuming submit is clearing application item values). I have not been able to find an example of how to do this in code. If there is a way to do this in code, will the application item or session state variable values be retained? I will need these values to be available to the user throughout their session.
Thanks for the help,
Steve

Steve,
I am concerned that setting the application items may not be limiting these values to a particular session.They are set in the current session only.
It is hard to know what you are doing exactly without seeing it. If you set up an example on apex.oracle.com we could could address one specific question at at time.
Scott

Session State Values Only Used After a Page Refresh

We recently moved our application to use Oracle Application Server. I don't know if this is an issue but I thought it might be relevant to my question.
In this application there is report that has a link to another page. This link sets the ID of the company that the subsequent pages use to provide several summarized reports with drill downs. I'll call this the main page.
Users recently started to report that when they drill into the details and use the breadcrumbs to get back to the main page, that page will display the wrong company, one they were viewing recently.
In testing I find that when I click a link to drill down into the details the details page is not for the right company. I check session state and the value of the ID is correct. If I refresh the page I then get the correct drill down page. Some of the drill down reports will pass a page specific ID into each page and others will just reference the ID from the main page. Not sure if this is relevant since the breadcrumbs to go back to the main page would not be able to use every possible page specific ID, my understanding was that once I set the ID in session state on the main page I could rely on it.
Also if I get the wrong details page and click on the breadcrumb to the main page I get the wrong main page (it displays a previously viewed company). Again the session value is correct and a refresh of the page will bring back the right company.
Our systems admin was asked to check if we had WebCache on and she said it was not. Is there something else that could be caching the results of these pages?
Thanks,
Greg

Scott,
This is in version 2.2.1 and there are no caching features available.
The application does require login.
I'm playing around with the APP_UNIQUE_PAGE_ID right now but I am finding that even in the builder if I edit the attributes of a report column and then try to edit another column it will bring up the last column I edited. Even if I use the record navigation buttons next to the Apply Changes button it will keep bringing me the same page over and over unless I constantly refresh the pages.
Greg

Check session ID

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