Session State Store Provider

ODP doesn't implement SessionStateStoreProviderBase class now. Whether it will be implemented in the future? What future? Thanks.

Hi Syed,
Have a look here: http://download-uk.oracle.com/docs/cd/B25329_01/doc/appdev.102/b25309/concept.htm#BEIHBFJJ
Dimitri
-- http://dgielis.blogspot.com
-- http://apex-evangelists.com

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Error message: AgServerMigration ERROR Using store provider as a session is deprecated.

Hi. I'm using a MacBook Pro, OS X 10.6.5. I have been opening files in Lightroom, editing them, and then doing finishing touches in CS5. When I save the file in CS5 and close it, my Mac returns the above message in Console eight times:
AgServerMigration ERROR Using store provider as a session is deprecated.
AgServerMigration ERROR Using store provider as a session is deprecated.
AgServerMigration ERROR Using store provider as a session is deprecated.
AgServerMigration ERROR Using store provider as a session is deprecated.
AgServerMigration ERROR Using store provider as a session is deprecated.
AgServerMigration ERROR Using store provider as a session is deprecated.
AgServerMigration ERROR Using store provider as a session is deprecated.
AgServerMigration ERROR Using store provider as a session is deprecated.
I have no idea what this means, or whether it is a problem. Does anyone know what this is?
Thanks.

I see the same thing and have done for some time. The actual file is being saved back. etc. So, in that respect both Lr and Ps are working fine. IOW, ignore it.

URGENT PLEASE HELP-Session State Provider for 8i.

We are looking for a SESSION STATE PROVIDER for .NET 2.0 for Oracle 8i. Please help to find a solution. The current installation on the Oracle website does not work for 8i.
Thanks a BILLION in advance.

You'll need to install the ODP 11 beta...

Is the Clustra system used to store session state?

Is the Clustra system used to store session state? Is it accessible to
users? Do multiple shared memories or disk both ensure availability?

Yes, HADB (Clustra) is used to store session state. HADB is not
directly accessible to users. HADB runs on multiple nodes and achieves
high availability by replicating data across the nodes.

URGENT HELP -- Session State Provider

We need to install Session State Providers for Oracle 8i. Cannt find a kit for that. Please help with suggestion where we can get a kit.
Thanks a BILLION in advance.

You'll need to install the ODP 11 beta...

How to save the session states for a tabular form WITHOUT using check boxs?

Greeting guys,
As you know that we can use collections to save the session states of a tabular forms, described in the how-to doc of manual tabular forms. However, what I am trying to do ( or have to do) is to provide a manual tabular form, and save the session states for validation, without using the check boxes. Because a user can put contents into some columns in a row without checking the corresponding checkbox, according to the requirements. So basically what I tried is to loop over all the rows and save Every entry into a collection. However, sometimes I got "no data found" error with unknown reasons.
My current solution is to use the "dirty" Retry button that gets back the history, which IMO is not a good workabout. So, I'd appreciate if somebody can shed some light on a better solution, especially if it is close to the one in that how-to doc.
Thanks in advance.
Luc

The following is the first collection solutin I've tried:
htmldb_collection.create_or_truncate_collection('TEMP_TABLE');
for i in 1..p_row_num loop -- Loop on the whole form rows
if (htmldb_application.g_f01(i) is not null) or (htmldb_application.g_f05(i) <> 0)
--If either of them has some input values, the row should be saved into the colleciton.
then
htmldb_collection.add_member(
p_collection_name => 'TEMP_TABLE',
p_c001 => htmldb_application.g_f01(i),
p_c002 => htmldb_application.g_f03(i),
p_c003 => htmldb_application.g_f04(i),
p_c004 => htmldb_application.g_f05(i),
p_c005 => htmldb_application.g_f06(i),
p_c006 => htmldb_application.g_f08(i)
end if;
end loop;
Some of columns have null values, but I don't think that's the reason. Because once I clicked all the check boxes, there would be no error no matter what values were in other columns.
Another issue would be extract the values FROM the collection, which has been tried because I had problem to store the data into the collection. I used "decode" functions inside the SQL to build the tabular form. I am not sure whether it will be the same as a regular SQL for a tabular form, like the example in the How-to doc.
Also I didn't use the checksum, for it is not an issue at the current stage. I am not sure whether that's the reason which caused the NO DATA FOUND error.

Custom Tabular form - Session state values disappear

Hi,
I have a custom tabular form page using apex_item and apex_collections. I am using the apex_collection to store the values in memory in order to avoid the data loss in session state. The page is working fine after a validation failure and it shows the values on the second report (as advised for custom tabular forms).
In this, some of the rows have clob value which needs to be edit on a rich text editor. Since apex_item does not provide a solution to have rich text editor, I have to branch to another page on an Edit link for the CLOB data using a modal window. However When I return back from the modal page, the values disappear from session state, and the validation (using htmldb_application.g_fxx arrays) does not take place.
Is there any workaround to overcome this issue?
Apex version: 4.1
Thanks in advance.
Natarajan

Thanks Daniel for your reply.
Actually its an interface with a custom tabular form on page 1 with apex collections and rich text editor on page 2. Since it is not possible to have the rich text editor, I need to have it in another page (I could have it the same page, that is the way I am trying now) however I open the next page as a modal window.
I have a link on the tabular form, so that the clob content is opened in the rich text editor on the next page. After the edit, I update it to the same collection and go back to the tabular form page and refreshes the report. It works fine, but causes trouble to the data entered on the other columns in the custom tabular form.
I have now deviated to another work and put this on a hold. If my explanation is still not clear, I will create the same page in apex.com to simulate the error.
Thanks again.
Natarajan
Edited by: Nattu on Mar 14, 2012 11:35 PM

Problem with application item and session state

Okay, let's see if I can explain this problem coherently.
I have a small app (one page), with an application item, F_WHERE_CLAUSE.
This page has three regions in which there are items that the users can populate for search conditions. A couple of these items are "select list with submit" (I still need to upgrade to the AJAX method, I know). There is another region which has one hidden field, called P1_WHERE_CLAUSE. This field is defined to "Always, replacing any value in session state..." with source type of "Item (application or page.....", and a source value of F_WHERE_CLAUSE with no default value.
I have a button called "Search" which submits the page and fires a PL/SQL process which builds a where condition based upon the other page items and stores the value to the application item F_WHERE_CLAUSE (correctly).
For testing, I've made the P1_WHERE_CLAUSE field visible so that I can see what's going on. I've also clicked the debug and session buttons to help trace this. After I click the "Search" button and the page submits, debug shows:
0.02: ...Session State: Save "P1_WHERE_CLAUSE" - saving same value: "1=1"
followed later by:
0.05: ...Session State: Saved Item "F_WHERE_CLAUSE" New Value="lower(primary_class) = 'rock' and country = 'Spain'"
The field P1_WHERE_CLAUSE displays with the correct search criteria as signified by F_WHERE_CLAUSE above. However, If I click the "session" button to view the session state values, P1_WHERE_CLAUSE shows up as:
P1_WHERE_CLAUSE Textarea 1=1 U while F_WHERE_CLAUSE displays the correct value still.
The reason this "problem" came up, is that this page also has three SQL report regions which use &P1_WHERE_CLAUSE. for the where condition. While they display the correct results on-screen, each report region also has the "Export to csv" enabled, and the export seems to be using the "1=1" condition (from the "session" window) instead of the search criteria that the on-screen region is using (F_WHERE_CLAUSE and the displayed P1_WHERE_CLAUSE), resulting in a retreival of all records.
Anybody have any idea what's going on and why, and how to get the csv export to use the correct value for the where condition?
Thanks,
Bill Ferguson

It appears the "Export to CSV" functionality requires the item value to be set in session state. The P1_WHERE_CLAUSE item value never gets saved to session state. The page is rendered and the value is put in the item on the page but until you submit the page session state doesn't know what P1_WHERE_CLAUSE is.
Create a before header computation or process to set the value of P1_WHERE_CLAUSE (which will save it to session state). It is interesting that the report regions didn't need to look at the value in session state but the "export to csv" does.
--Jeff

Interactive Report Download and Session State Protection

I have created an Interactive Report in an APEX application that I have enabled
session state protection for. The issue I am having is with the "Download"
functionality of the interactive report to a .csv file.
The URL created by selecting Download from the drop down (javascript:gReport.controls.download();)
is built or constructed without a checksum thus causing the error below.
Error
No checksum was provided to show processing for a page that
requires a checksum when one or more request, clear cache, or argument
values are passed as parameters.
The anchor tag containing the URL (/f?p=app_id:page:session_id:CSV:) is contained within
<div id="apexir_CONTROL_PANEL_DROP" class="drop_panel
clearfix" style="">
Running the following: Application Express 3.1.0.00.32 on Oracle Database 10g Enterprise Edition Release 10.2.0.3.0
Is there a way to add a checksum to this? OR does anyone have any ideas on how to work around this?
Edited by: Bryce Tuohy on Feb 26, 2009 10:08 AM

WORKAROUND:
1.) Create hidden ITEM on page (I named it P23_PREPARED_CSV_DOWNLOAD_URL).
Enter the following for the ITEM
as the SOURCE_TYPE : PL/SQL Function Body
as the SOURCE: return apex_util.prepare_url('f?p=&APP_ID.:&APP_PAGE_ID.:&APP_SESSION.:CSV:')
2.) Create BUTTON that executes javascript to open POPUP window with this url.
a.) Create Button and enter
<a href="javascript:popupURL('&P23_PREPARED_CSV_DOWNLOAD_URL.')">Download and Save to CSV file</a>as the "Text Label/Alt"
Originally had custom code for javascript POPUP and this is not needed .... just use the APEX javascript function.
Edited by: Bryce Tuohy on Mar 5, 2009 10:47 AM

Session state and browser cache - Back button problem

Hi all,
I have a problem (and unless I'm missing something I think we all do) with session state and use of the browser's Back button. I really hope I'm just being dumb...
Background scenario:
Page P has a sidebar list allowing the user to select what content is displayed (e.g. 'stuff relating to X, Y or Z' where X, Y and Z are rows in, say, a table of projects). When a list entry is clicked, we branch to page P with the value of the list item placed in an application-level item (call it G_PROJECT). Reports on page P use G_PROJECT in their WHERE clauses.
So, click list entry X and G_PROJECT is set to X and page P shows reports for project X.
Page P also has a set of buttons which branch to various edit pages which allow attributes of page P's current project to be updated. These pages similarly use G_PROJECT in their WHERE clauses.
Problem scenario:
1. The user goes to page P and picks project X off the list. Project X's stuff is displayed (G_PROJECT = X).
2. The user then picks project Y off the list. Project Y's stuff is displayed (G_PROJECT = Y).
3. The user then clicks the browser's Back button. The page is served from browser cache, so project X's stuff is displayed, but G_PROJECT still = Y.
4. The user clicks an 'Edit' button; we submit, and branch to an edit page which displays (and will edit) data for project Y because G_PROJECT still = Y.
This is SERIOUSLY BAD NEWS - apart from being confusing, the user's edit permissions on projects X and Y may differ, and so the user may be able to perform 'illegal' updates.
I've read what I can on this forum and the rest of the web looking for ways to a) inhibit browsers' 'Back' functions and/or b) prevent pages being cached by the browser, but none of them have worked for me.
Short of waiting for browser manufacturers to recognise that the web is now full of applications as well as static pages, and enable robust programmatic control of cache behaviour, does anybody know how the problem can be avoided - or at least detected?
Thanks,
jd
Failed attempts to date:
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="cache-control" content="no-store">
<meta http-equiv="cache-control" content="private">
<meta http-equiv="cache-control" content="max-age=0, must-revalidate">
<meta http-equiv="expires" content="Wed, 09 Aug 2000 01:01:01 GMT">
<meta http-equiv="pragma" content="no-cache">
Disallowing duplicate submission (page attribute).
window.history.go(1);

Thanks Scott,
I may be being dumb here but I don't see how that would help...
P250_PROJECT and G_PROJECT are currently kept in sync by app logic. Whichever is used to drive, if the page is rendered from cache then the app logic is not executed, so the rendered page contents are not those keyed by P250_PROJECT, as illustrated in steps 1-4 of the problem above.
The user sees X, the session items say Y. The engine doesn't know what the user is seeing.
when page P is POSTed, its hidden item P250_PROJECT should always be used to derive the application item G_PROJECT. Then whether the page was pulled from cache or rendered anew via a click from the sidebar link, the project ID is determined by the contents of that page.
As I said above I tried this, with the 'Edit' branch set to:
Set these items: G_PROJECT
With these values: &P250_PROJECT.
but it makes no difference. The project ID is not determined by the rendered page contents - the engine gets the value of P250_PROJECT from session state.
I can code the 'Edit' pages such that they check permissions and if necessary redirect back to p250 (conditional before-header branch), but that's a clunky cure rather than the prevention I was hoping for.
Please tell me if my understanding is incorrect.
jd

Saving session state in database table rather in websever for Ordering App

Hi all,
Ours is a ordering application (telecomm) domain.
Currently, we are storing user sessions data (Order shopping cart session data) in middle tier (iPlanet web server) which inturn consumes lot of memory resources.
Shopping cart could be in MBs if order is a huge business order.
So in order to not to overtax web server (middle tier), we are thinking of storing session data directly in a database table to relieve the overhead on web server and make use of database for storage.
I read that APEX (html db) is already using this "single metadata table" approach for session data management. But we are not using HTML DB to really look into.
Can some one advise how to go about storing "user session data" directly in a "database table" for both storage and retrieval purposes instead of storing it in "webserver".
How does this "metadata table" structure looks like. Is it more generic ?
Really appreciate your time and help/suggestions.

Joel,
Thanks for your response. sorry, i meant to say that "the current application does not use APEX but will look into it".
To build this is an utterly non-trivial exercise. Oh - it may not be so hard to save session state to a table when you POST a page. But you may want to reference this in many places, and it's a question of can you change all of these references to indirect references from session state in your application.In order to free up the load on webserver, we want to maintain session management in database. Could you please explain the above little more :
How do we maintain the "user session" with "database table" ?
Do we need to store "session data" at java object level or by page in database table ? How does the structure of this "metadata table" looks like.
Thanks for your time.

Session state protection and read-only items

I have a requirement to create a report + form for a database table. In the form, there is mandatory database column that needs to be displayed but it should be read-only and its value derived using values entered elsewhere on the screen.
It tried Display Only, Read Only and Disabled but they either fall foul of session state protection violation or ORA-01400: cannot insert NULL. The best method that I've found was to add readonly="readonly" the item element, but this causes the input item to lose its APEX classes and I'd prefer a declarative solution anyway.
Anyone know the best approach?
I've created a DEMO - http://apex.oracle.com/pls/apex/f?p=READONLY - which demonstrates the 4 methods.
Edited by: KGelling on 17-May-2012 06:10

KGelling wrote:
The best method that I've found was to add readonly="readonly" the item element, but this causes the input item to lose its APEX classes and I'd prefer a declarative solution anyway.Looks like a bug to me. However a possible explanation/justification for this behaviour is that the HTML Form Element Attributes are often used to specify a custom class for the item, so the default class is removed to prevent any conflicts. IMO APEX needs to provide declarative support for the use of multiple, space-separated class values in page, region, item etc attributes.
As a workaround in this case, just include the class in the HTML Form Element Attributes:
class="number_field" readonly="readonly"
I've created a DEMO - http://apex.oracle.com/pls/apex/f?p=READONLY - which demonstrates the 4 methods.
Thanks for making the effort.

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

Referencing session state across DBLinks

I have a central security package that all applications access to provide item-level authorisation.
Recent extensions to the security model require additional information from the application, held in Application Items.
For various legacy reasons I want to avoid having to add additional parameters to the security functions called so I reference the application items via the V() function. This works perfectly on local applications (within the same database) but V() returns null values if the application is accessing the security function via a DB link.
So, is there any way to access session state from a PL/SQL package of an application that is not running on the same database?
Regards
Richard

Richard
Something along these lines might work. Say the remote package is named 'sec var'. At the remote db create 'sec_vas' as follows. create or replace package sec_vars is
var1 varchar2(100);   // new items needed by auth fn
var2 varchar2(100);
procedure setval (var1 in varchar2,var2 in varchar2); //sets var1/var2 with values from session state
function getval (var in varchar2) return varchar2;   // the local 'v' fn
function doAuth() return boolean;
end;
create or replace package body sec_vars is
procedure setval (var1 in varchar2,var2 in varchar2) is
begin
sec_vars.var1:='Variable 1';
sec_vars.var2 := 'variable 2';
end;
function getval (var in varchar2) return varchar2 is
begin
if upper(var)='VAR1' then
   return sec_vars.var1;
elsif upper(var)='VAR2' then
    return sec_vars.var2;
else
    return null;
end if;
end;
function doAuth() return boolean is
begin
select count(*) from emp where ename=sec_vars.get_val('VAR1'');
return true;
end;
end;And in the Apex db we do something like create synonym sec_vars for sec_vars@remote_db;
// an auth process
begin
sec_vars.setval ('Variable 1','variable 2'); // set required session item values
sec_vars.do_auth();
end;varad

Session State Store Provider

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