Trouble in session variables

hi,
I am using "request.getSession(true)" statement .So i think i shud get a new session each time i'll start the browser.
But each time when i am starting browser it is showing me the previous values, stored in text boxes.
And when i'll shutdown tomcat and restart then only browser works properly.
I m not able to understand evem the problem.
can anybody give me some idea?
manish

hi evnafets,
Ya u r right i m storing values in session context with setAttribute() command.And this statement is in servlet which calls the jsp page and in jsp page i m using session.getAttribute() to get values and these values i m inserting in some text boxes.
Exact codes are:
String selected_tables=(String)session.getAttribute("selected_tables");
<td>Selected Tables </td><td>:</td><td><input type = "text" Name = "sel_table" <%if (selected_tables==null)%>value=""<%else%>value="<%=selected_tables%>"></td></td>
I m using IE vers.6.0
I tried <%= session.getId() %> and it is giving new id each time i reopen the browser that means browser is working properly.
But even now i m not able to understand when the session is new ,why in text boexs previous values are coming.
is it necessary to use setMaxInactiveInterval() .I m not using this bcz i don't want it now.
And when i m restarting tomcat then why it starts working porperly.Is that a problem of tomcat or my program itself.
Anyway thanx for thsi much
manish

Similar Messages

Trouble with session variables

Hello, I am a user of cf for a number of years, but only
lately as of last week have I had the opportunity to work with CF
8.... wow the changes are quite intimidating. But none the less
press on is my thought, so now my trouble. Thing I did was to start
using application.cfc vs application.cfm, as it would appear that
is how things have come to pass. So I looked around and found this
code to set session management:
<cfcomponent output="false" hint="Handles application
level events.">

<cfset THIS.Name = "AppCFC" />
<cfset THIS.ApplicationTimeout = CreateTimeSpan( 0, 0, 60,
0 ) />
<cfset THIS.SessionManagement = true />
<cfset THIS.SetClientCookies = false />
<CFSET request.dsn = "wlaw" />
</cfcomponent>
My problem is that while I can define a session variable on a
page that is not under the SSL cert, my session vars become
undefined once I land on a page under SSL.
Am I missing something? I dont recall this being a problem in
the past. All help is appreciated.
as to setting the var, it is done on an index page which
calls another page in a different directory, but under the same
server,.
<cfset session.ref="foo">
the only changes are that the result page or action page if
you prefer is now under the ssl and the var becomes undefined.
thank you in advance
Mike Dooly

is the object being put in session context serializable.. Also in
          other to avoid any generated classes issues delete all the classes
          whcih weblogic generates as part of deploying the application. That
          should atleast mitigate one explanation for your problem.
          Hope this helps
          ~a
          [email protected] (Gabriel Ornelas De Luna) wrote in message news:<[email protected]>...
          > Hello everyone,
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Trying to move a list of form variables to session variables of the same name

I am trying to move a list of form variables to session variables of the same name and I am having a lot of trouble.
I have never had to post of this forum with a language question in all the 10 years I have been using ColdFusion. I was a qa Engineer @ Allaire/Macromedia back when it was going from one to the other. I have a pretty good grasp of the language.
I have software that runs off a list. The fieldnames are variable and stored off in an array. It's survey software that runs off a "meta file". In this example; I have the number of fields in the survey set to 12 in the "metafile". I have each field declared in that file in array Session.SurveyField[1] and the above loop works fine. I include this "metafile" at the start of the process.
I cfloop around a struct and it works wherever I have needed to use it; such as here - writing to the database for example;
<CFQUERY NAME="InsertRec" DATASOURCE="Survey">
INSERT into #variables.SurveyTableName#
(EntryTime
<cfloop from="1" to="#Session.NumberOfSurveyFields#" index="arrayindex">
,#Session.SurveyField[arrayindex]#
</cfloop>

   VALUES
    ('#EntryTime#'
<cfloop from="1" to="#Session.NumberOfSurveyFields#" index="arrayindex">
<cfset thisname = "Session." & Session.SurveyField[arrayindex]>
,'#evaluate(variables.thisname)#'
</cfloop>

</CFQUERY>
NOW HERE'S THE PROBLEM: I am running into trouble when trying to move the form variables to session variables of the same name. It is the only part of the software that I still need the datanames hard coded and that is a roadblock for me.
<cfloop from="1" to="#Session.NumberOfSurveyFields#" index="arrayindex">
<cfset thissessionfield = "Session." & Session.SurveyField[arrayindex]>
<cfset thisformfield = "Form." & Session.SurveyField[arrayindex]>
<cfset #thissessionfield# = #evaluate(thisformfield)#>
</cfloop>
I have tried it with or without the "evaluate"; same result. It doesn't give an error; it just ignores them (session variables look as such in the next page in the chain)
q01_name=
q02_acadtechorna=
q03_water=
q04_firstaid=
q05_cpr=
q06_lifeguard=
q07_aed=
q08_projadv=
q09_color=
q10_santaclaus=
q11_supervisor=
q12_supervisoropinion=
Note: they exist because I CFPARAM them in a loop like the above at the start of the procedure) - and this works just fine!
<cflock scope="Session" type="EXCLUSIVE" timeout="30">
<cfloop from="1" to="#Session.NumberOfSurveyFields#" index="arrayindex">
<cfset dataname = "Session." & Session.SurveyField[arrayindex]>
<cfparam name="#variables.dataname#" default="">
</cfloop>
</cflock>
I EVEN tried exploiting the Form.Fieldnames list using CFLoop over the list and the same sort of logic within and it still gives me nothing....
Here's the FORM.FIELDNAMES value
"Q01_NAME,Q02_ACADTECHORNA,Q03_WATER,Q04_FIRSTAID,Q05_CPR,Q06_LIFEGUARD,Q07_AED,Q08_PROJAD V,Q09_COLOR,
Q10_SANTACLAUS,Q11_SUPERVISOR,Q12_SUPERVISOROPINION"
Here's the logic; SAME RESULT - The session variables don't get set.
<cfoutput>
<cfloop list="#Form.FieldNames#" index="thisfield">

<cfscript>
thisSESSIONfield = "Session." & thisfield;
thisFORMfield = "Form." & thisfield;
#thisSESSIONfield# = #thisFORMfield#;
</cfscript>
</cfloop>
</cfoutput>
The CFPARAM in a loop with variable output name works just fine; so does the post (which I included above) as does the SQL Create, Param Form Variables, Param Session Variables, etc.
THIS even works for moving BLANK to each session variable, to zero them all out at the end of the process;
<cflock scope="Session" type="EXCLUSIVE" timeout="30">
<cfloop from="1" to="#Session.NumberOfSurveyFields#" index="arrayindex">
<cfset thislocalfield = Session.SurveyField[arrayindex]>
<cfscript>
thissessionfield = "Session." & thislocalfield;
</cfscript>
<cfset #thissessionfield# = "">
</cfloop>
</cflock>
Expanding on that code, you would think this would work, but it doesn't;
<cfloop from="1" to="#Session.NumberOfSurveyFields#" index="arrayindex">
<cfset thislocalfield = Session.SurveyField[arrayindex]>
<cfscript>
thissessionfield = "Session." & thislocalfield;
thisformfield = "Form." & thislocalfield;
</cfscript>


<cfoutput>
<cfset #thissessionfield# = "#evaluate(thisformfield)#">
</cfoutput>
</cfloop>
And see that debug code in the middle? To add insult to injury... When I uncomment that it shows me this. So it certainly looks like this should work....
Session.q01_name = "Me"
Session.q02_AcadTechORNA = "N/A"
Session.q03_Water = "Yes (certificate expired)"
Session.q04_FirstAid = "Yes (certificate is current)"
Session.q05_CPR = "No"
Session.q06_LifeGuard = "Yes (certificate expired)"
Session.q07_AED = "Yes (certificate expired)"
Session.q08_ProjAdv = "Yes (certificate expired)"
Session.q09_Color = "Gray"
Session.q10_SantaClaus = "Yes"
Session.q11_Supervisor = "Da Boss"
Session.q12_SupervisorOpinion = "Not a bad thing"
There must be some simpler way to do this. This way won't work against all odds even though it seems so much like it should.
So I end up having to hardcode it; still looking for an automated way to set these #@%$*@!## session variables over the list from the form variables of the same @#@!$#%$%# name. Do I sound frustrated???
No matter what I do, if I don't HARDCODE like this;
<cfset Session.q01_name = Form.q01_name>
<cfset Session.q02_AcadTechORNA = Form.q02_AcadTechORNA>
<cfset Session.q03_Water = Form.q03_Water>
<cfset Session.q04_FirstAid = Form.q04_FirstAid>
<cfset Session.q05_CPR = Form.q05_CPR>
<cfset Session.q06_LifeGuard = Form.q06_LifeGuard>
<cfset Session.q07_AED = Form.q07_AED>
<cfset Session.q08_ProjAdv = Form.q08_ProjAdv>
<cfset Session.q09_Color = Form.q09_Color>
<cfset Session.q10_SantaClaus = Form.q10_SantaClaus>
<cfset Session.q11_Supervisor = Form.q11_Supervisor>
<cfset Session.q12_SupervisorOpinion = Form.q12_SupervisorOpinion>
I always get this from my next page because the session variables are empty;
You must answer question 1.
You must answer question 2.
You must answer question 3.
You must answer question 4.
You must answer question 5.
You must answer question 6.
You must answer question 7.
You must answer question 8.
You must answer question 9.
You must answer question 10.
I tried duplicate as well, but I can not get the above to work...
Can anyone help me do this thing that one would think is simple????

I think if you use structure array syntax you should get the results you want.
<cfloop from="1" to="#Session.NumberOfSurveyFields#" index="arrayindex">
      <cfset session[Session.SurveyField[arrayindex]] = Form[Session.SurveyField[arrayindex]]>
</cfloop>
Or probably even easier.
<cfset session = duplicate(form)>

SESSION VARIABLES : HOW TO TEST FOR MULTIPLE USERS

I have a username session variable set up on a localhost testing envirnoment.
This works fine for one user, but when I open another occurence of the browser (or just another tab) to test for multiple users the system overwrites the session variable with the last username input.
So the question is:
Why doesn't dreamweaver hold an instance of the session variable for each browser session? and if not what are your suggestions?
Thanks
Adam.

Thanks for that.
After scouring the internet I found the only way of running 2 instances of firefox without them sharing the session variables is to create 2 new firefox profiles in windows + set the MOZ_NO_REMOTE environment variable.
Internet explorer is much easier as it has a 'new session' option in the file menu, but seems to have more trouble displaying tables correctly.
Hope this helps anyone with a similar problem.

What is the best method to store session variables

As the title says, what is the best method to store session
variables in a Production environment?
I have been reading the posts on sessions and have been
getting different ideas on where to store session variables, in a
db, registery, cookies etc etc
Can someone clarify possible best practice on this matter?
Matrix

From my experience, db is the best to store client variable
data. Registry will cause you trouble in future (when data gets
overloaded) and cookies will not serve the purpose for a few % of
your users.

Session Variable in any Object

Hi, I've been developing on java, jsp and struts for a while now, and I've got something that I can't resolve:
I have some session variables in struts, such as User, role, etc... I can get the session using request.getSession() and then get them without any trouble. My design uses the MVC pattern, so I also have a Model Object. I also have a database controller class to store my model. The problem is that I wanna retrieve the session variables from the database controller, and there I don't have the request object. I could use a set, or take the parameters I need, put them on a bean and pass that bean as a parameter; but that would be very ugly, and I would have to change almost every class of my application.
Is there a way to have session variables from any object?
Thanks!!!
Leandro

nope... you have to pass the reference in like anything else.

Setting & Retrieving Session Variables

Hi,
I’m new at session variables and having trouble
understanding the basics.
I have a form with two dropdowns. I want to store the
selections from both in session variables. Then pass those to
another page where I want to display the selected values in my
headline such as “You searched for [value1] and [value2]." I
can’t get this to work right. I’ve gone through DW Help
and tutorials and still can’t figure it out.
Any help would be much appreciated.
DW CS3, ASP and Access
Thanks,

> I?m new at session variables and having trouble
understanding the basics.
>
> I have a form with two dropdowns. I want to store the
selections from both
> in
> session variables. Then pass those to another page where
I want to display
> the
> selected values in my headline such as ?You searched for
[value1] and
> [value2]." I can?t get this to work right. I?ve gone
through DW Help and
> tutorials and still can?t figure it out.
>
> Any help would be much appreciated.
>
> DW CS3, ASP and Access
On your form action page, put this in:
<%
Session("varOne") = Request.Form("dropdown1")
Session("varTwo") = Request.Form("dropdown2")
%>
To write the sessions to the page, put this:
You searched for <%=varOne%> and <%=varTwo%>.

To pass new session variable value to stored proc before running a report.

Hi,
Below is summary of the report requirement -
Database level design
1. Created a view and a global temporary table (GTT)
2. Created an Oracle package procedure to accept from and to business dates on basis of which it will fetch, process and populate the GTT.
Repository level design
1. Created a business model containing the view and the GTT (mentioned above)
2. Created two SESSION variables "from_dt" and "to_dt" to be initialized by their respective init blocks. Each of the variable is initialized with a DATE column value (of type DATETIME) from a database lookup table. I have also set the option "Enable that variable to be set by any user" for both variables.
Query for these variables :
from_dt = select from_date from <table>
to_dt = select add_months(from_date,12) from <table>
Presentation level design
1. Using a text box, i display the default/initialized values of these variables like this -
Current business date:@{biServer.variables['NQ_SESSION.from_dt']} Future business dt:@{biServer.variables['NQ_SESSION.to_dt']}
Dates get displayed in YYYY-MM-DD 00:00:00 format
The text msg displays these default dates and allows the user to specift different date range for which i create prompts as shown below.
2. Using any random two columns of date type from the business model, i create two date dashboard prompts with labels "From Dt" and "To Dt".
i select Calender Controls for both; setting Default To = Report Defaults.
The Set Variable is set to Presentation variables - such that pv_from_dt maps to "From Dt" and pv_to_dt maps to "To Dt".
3. i create the report using the business model created above. In the report "Advanced Tab" => "Prefix" field i specify the following -
SET VARIABLE from_dt='@{pv_from_dt}',to_dt='@{pv_to_dt}';
Note : The logic here is to display the default dates and allow user to specify different date values which will be stored in presentation variables.
If the user does specify different "from dt" and "to dt" values, then using the presentation variables, i want to "write" back these new values to the corresponding session variables mentioned above.
If the user does not specify different date range, then the default/initialized dates must be considered.
I also display the default and new date values in the report title.
Back to Repository level design
To execute the stored procedure that will load the GTT before running the report I need to pass two date parameters to the stored procedure on basis of which it will fetch data, process and populate the GTT.
In the Connection Pool --> Connection Script Tab --> Execute before query, I wrote the below query using the repository variables FROM_DT and TO_DT to execute the procedure -
DECLARE
v_from_dt date;
v_to_dt date;
BEGIN
v_from_dt := VALUEOF(From_Dt);
v_to_dt := VALUEOF(To_Dt);
package_name1.package_body(v_from_dt,v_to_dt);
END;
Now when i try to run the report i get the following error :
[nQSError: 10058] A general error has occurred. [nQSError: 23006] The session variable, NQ_SESSION.to_dt, has no value definition. (HY000)..
Need help on this.
Is it possible to "write back" a new value to a session variable ?
Any other alternatives.
Thanks
Nusrat
Edited by: user10309945 on Jan 24, 2011 10:08 PM

Sandeep, I found a several topics where users describe saving values in DB through stored procedure or function. For example, [How to store OBIEE presentation level variable values in DB |http://forums.oracle.com/forums/thread.jspa?threadID=892006] I tried it and get an error
*10058. [NQODBC] [SQL_STATE: HY000] [nQSError: 10058] A general error has occurred. [nQSError: 17001] Oracle Error code: 14551, message: ORA-14551: cannot perform a DML operation inside a query ORA-06512*
It's not a BI error. This error are generated by Oracle DB. If I write next:
SELECT MyPLSQLFunction(p1,p2) FROM DUAL
I get the same error.
Oracle doesn't allow DML operations in SELECT.
Did you relalize this feature yourself? Where did I mistake?

Session variable size limitation (LV Webservices)

Hi community,
I read couple dozen email addresses from an XML and trying to write them into a session variable. The email addresses are comma separated and have a total string length of about 1100 characters. When I try to write it into a session variable LabVIEW drops an error message (-67158).
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Thanks!

I am writing a general purpose webpage where I need email notifications. I have the workaround ready (before I send out the emails I dont read the emails from a session, but using the userID stored in the session to read the email from the xml). But generally having this limitation is annoying and unnecessary as normally you easily can store 100kB in one session. (probably even more, but that was the max I have ever did)

Can we use session variables in BI publisher's Data Model SQL Query?

Hi Experts,
We need to implement Data level security in BI Publisher 11g.
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ie can we include the where clause in the Data Models SQL Query like
Where ORG_ID = @{biServer.variables['NQ_SESSION.INV_ORG']}
Let me know your views on this.
PS: We are implementing EBS r12 security in BI Publisher.
Thanks

Read this -> OBIEE 11g: Error: "[nQSError: 23006] The session variable, NQ_SESSION.LAN_INT, has no value definition." when Creating a SQL Query using the session variable NQ_SESSION.LAN_INT in BI Publisher [ID 1511676.1]
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HTH,
SVS

Compare data record to session variable

I am completely stumped. It should be easy.
I am trying to compare a field from a database to a sesssion variable on a JSP page and even though the fields print out the same when I call them in JSP, my "If" statement never gets activated.
Here's the last version of the code I tried:
String usernamev = UserSession.getValue("username").toString();
String custname = RS.getString("ORCUST");
if (usernamev.equals(custname))
userrole="Customer ";
I've also tried this:
String usernamev = UserSession.getValue("username").toString();
String custname = RS.getString("ORCUST").toString;
if (usernamev.equals(custname))
userrole="Customer ";
And I've also tried this:
if (RS.getString("ORCUST").equals(usernamev))
userrole= "Customer ";
And This:
And I've also tried this:
if (usernamev.equals(RS.getString("ORCUST")))
userrole= "Customer ";
When RILLI is the field I'm trying to compare this works:
if (usernamev.equals("RILLI"))
userrole= "Customer ";
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<%=usernamev%>
and <%=RS.getString("ORCUST")%>
they show on my webpage as RILLI. I can also assign a constant value to userrole without a problem.
What the heck am I doing wrong?

I think limeybrit was on the right track and I hadn't trimmed because I got a no trim method error before because I hadn't converted session variable to a string.
When I used this:
String usernamev = UserSession.getValue("username").toString();
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Session variable getting reset when leaving dashboard

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Running 11.1.1.7.0 on Windows Server 2008. Same behavior is occurring in both Firefox 21 and IE 9.

Thank you for your answer MK,
I try to write a SQL in my prompt but not work for me:
-In default selection I choose SQL Results and I type: Year(Current_date) and save my prompt and I don't see any value in my dashboardpage, if I click in prompt I can see all members of my year dimension but by default is empty.
I modify the other solution: I have 1hour refresh time and I change for 1 minute, but doesn't work.
the default initializer is in RPD (variable year that belongs to BI_Year Block) and I have written 2009.

Urgent help required...for replacing JSP session variables

I am trying to enhance the performance of a j2ee based webapp which use session variables to store the data...
Is there any alternative for session variables..The project is based on j2ee-Struts frame work..But the amount of code maintainance should be minimum ....so i can't create beanforms for all these data...
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ok... thanks... i created a fla file and inthe action script
pasted the following code
var nc:NetConnection = new NetConnection();
nc.connect("rtmp://flash.ispstream.com/ondemand/unikron/my_video_dj/");
var ns:NetStream = new NetStream(nc);
contentMain.myVideo.attachVideo(ns);
ns.setBufferTime(5);
ns.play("dvd_r");
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Passing attribute value in session variable

Hi All
I need to store one field value from my SIM form as a session variable and pass them to the next page along with my session, using some jscript stuff or else. Does this make sense?
If it is possible or anyone have any prior experience please reply.
Thanks in advance

We have tested a code-snippet that 'gets' attribute-values from the session:
<invoke name='getAttribute'>
    <invoke name='getHttpSession'>
        <ref>:display.state</ref>
    </invoke>
    <s>attribute_name</s>
</invoke>You can try 'setAttribute' in the similar way.
Thanks,
Adi

Javacard and session variables

Hello,
I'm trying to find a reasonable Javacard technique to handle "session variables" that must be kept between successive APDUs, but must be re-initialized on each card reset (and/or each time the application is selected); e.g. currently selected file, currently selected record, current session key, has the user PIN been verified...
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Examples in the Java Card Kit 2.2.2 (e.g. JavaPurseCrypto.java) manipulate session variables in the following way:
1) The programmers group session variables of basic type (Short, Byte, Boolean) according to type, and map each such variable at an explicit index of a vector (one per basic type used as session variable).
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3) Each use of a session variable of basic type is explicitly translated by the programmer into using the appropriately numbered element of the appropriate vector.
4) Vector session variables require no further syntactic juggling, but eat up an object descriptor worth of permanent data memory (EEPROM or Flash), and a function call + object affectation worth of applet-storage memory (EEPROM, Flash or ROM).
The preparatory phase goes:
public class MyApp extends Applet {
// transientShorts array indices
    final static byte      TN_IX = 0;
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// install method
    public static void install( byte[] bArray, short bOffset, byte bLength ) {
         //Create transient objects.
        transientShorts = JCSystem.makeTransientShortArray( NUM_TRANSIENT_SHORTS,
            JCSystem.CLEAR_ON_DESELECT);
        transientBools = JCSystem.makeTransientBooleanArray( NUM_TRANSIENT_BOOLS,
            JCSystem.CLEAR_ON_DESELECT);
        CAD_ID_array = JCSystem.makeTransientByteArray( (short)4,
            JCSystem.CLEAR_ON_DESELECT);
        byteArray8 = JCSystem.makeTransientByteArray( (short)8,
            JCSystem.CLEAR_ON_DESELECT);
(..)and when it's time for usage, things go:
    if (transientShorts[SELECTED_FILE_IX] == (short)0)
        transientShorts[SELECTED_FILE_IX] == fid;
    transientBools[UPDATE_INITIALIZED] =
        sig.verify(MAC_buffer, (short)0, (short)10,
            byteArray8, START, SIGNATURE_LENGTH);I find this
a) Verbose and complex.
b) Error-prone: there is nothing to prevent the accidental use of transientShorts[UPDATE_INITIALIZED].
c) Wastefull of memory: each use of a basic-type state variable wastes some code; each vector state variable wastes an object-descriptor worth of permanent data memory, and code for its allocation.
d) Slow at runtime: each use of a "session variable", especially of a basic type, goes thru method invocation(s) which end up painfully slow (at least on some cards), to the point that for repeated uses, one often attain a nice speedup by caching a session variable, and/or transientShorts and the like, into local variables.
As an aside, I don't get if the true allocation of RAM occurs at install time (implying non-selected applications eat up RAM), or at application selection (implying hidden extra overhead).
I dream of an equivalent for the C idiom "struct of state variables". Are these issues discussed, in a Sun manual, or elsewhere? Is there a better way?
Other desperate questions: does a C compiler that output Javacard bytecode make sense/exists? Or a usable Javacard bytecode assembler?
Francois Grieu

Interesting post.
I don't have a solution to your problem, but caching the session variables arrays in local variable arrays is a good start. This should be only done when the applet is in context, e.g. selected or accessed through the shareable interface. This values should be written back to EEPROM at e.g. deselect or some other important point of time. Do you run into problems if a tear happens? I don't think so since the session variables should be transactional, and a defined point will commit a transaction.
Analyzing the bytecode is a good idea. I know of a view in JCOP Tools (Eclipse plugin) where you can analyze the bytecode and optimize it to your needs.

Trouble in session variables

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