Maintaining session among Web Applications

Hi!
I would like to know if there is a good solution for this purpose: maintain the session in three, four or more web applications.
We know that if a user navigates through the pages that belong to only one of the web apps, the session can possibly expire in other web apps. What would be a good strategy to eliminate this problem?
I was thinking about a solution in which for each request the user does, or in other words, for each submit the user executes, I would call other servlets located in the other Web apps, and such servlets would have only this objective, that is maintaining the session, but I�m not sure whether it is really the best way.
Any thoughts?
Thanks.

SSO will be a good options, using some available products, e.g, Sun Access Manager, or you can go for Webservices, with token management.

Similar Messages

Not able to clear session of web application running inside wpf browser control

Hi,
I have used below code to clear session of web application running inside wpf browser control .
[DllImport("wininet.dll", SetLastError = true)]
private static extern bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int lpdwBufferLength);
InternetSetOption(IntPtr.Zero, INTERNET_OPTION_END_BROWSER_SESSION, IntPtr.Zero, 0);
This code is working in Windows 8 but it is not working in windows 7 and windows 8.1.
I want to know why it is not working and how to make it work in windows 7 and windows 8.1
Please help.
Thanks & Regards,
Pritesh

Hi,
I have used below code to clear session of web application running inside wpf browser control .
[DllImport("wininet.dll", SetLastError = true)]
private static extern bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int lpdwBufferLength);
InternetSetOption(IntPtr.Zero, INTERNET_OPTION_END_BROWSER_SESSION, IntPtr.Zero, 0);
This code is working in Windows 8 but it is not working in windows 7 and windows 8.1.
I want to know why it is not working and how to make it work in windows 7 and windows 8.1
Please help.
Thanks & Regards,
Pritesh

Sessions across Web Applications (WARs)

I've heard that you can't share session information (http session) across web applications or war files in the j2ee framework. However, I haven't seen any proof of this? I'm struggling to find information telling that I can't do this. Can someone elaborate a bit?
Thanks.

Hi !
It is TOTALLY WRONG that someone wrote here that a
separate JVM is started for each web-app! No way. Run
any appserver and do a 'ps -ef|grep java' and I bet
you will see only one forever :-). Correct
Steve, it is the classloader hierarchy in all
appservers that prevents you from sharing sessions (i
would say classes loaded by various web-apps). There
is something called a web-app / WAR classloader, which
is 4th in the hierarchy of JVm classloader hierarchy.
Since all your web-app loaded classes are loaded by
this classloader and since each web-app has a "peer"
classloader at same level for its own web-app, you
will never be able to share across web-apps. Incorrect, just because you can have separate classloaders for separate web applications does not mean that those web applications cannot share instances.
It is also possible to have classes which are globally available to ALL web applications which are loaded as part of the servlet container. Tomcat versions 4+ have a common area where classes can be made available. These classes are not loaded within the Web Application classloader at all.
Not only that but it is possible to configure web application contexts such that they can also share things like sessions. This feature is definitely part of the Apache Tomcat release and as this is taken by Sun to be the Reference Implementation of the Servlet Container I would assume that is also part of the J2EE Standard as well.
YOu can always use the DB stuff that other genltmen
has already suggested.

Can't record web session in Web Application Transaction Monitoring using IE10 (Tried under Windows Server 2008R2 and 2012)

Hi,
In Operations Manager Console 2012 SP1 including RU2 I am trying to record a web session in Web Application Transaction Monitoring.
I have check that:
The add-on (Microsoft Web Recorder Helper) 64bit is Enabled.
The 64bit version of IE10 is running/launched. See this link for how to modify your registry key if needed: http://kevingreeneitblog.blogspot.co.uk/2012/01/scom-2012-recording-web-browser-session.html
I have tried both on a Windows 2008R2 and 2012 server, but the recorder is not showing up as can been seen from Kevin's Blog (link above).
Any Ideas?

I managed to get this working on both Windows 8 IE10 and server 2012 IE10. Tested on SCOM 2012 SP1 UR2 and UR3. I've done this process in lab and production several times so hopefully this helps you out.
Checklist:
1. Ensure that the 64bit IE10 is launching when the "start web-capture" is started in SCOM.
2. Enable IE10 internet options:
a: Advanced - Security - Enable Enhanced Protected Mode
b: Advanced - Browsing - Enable third-party browser extensions
3. Close all running IE sessions and open the Registry Editor
4. Registry Change (No reboot needed)
- Browse to the following regkey:
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
- Add a new DWORD called TabProcGrowth and set it to 0
5. Registry Change (No reboot needed)
- Browse to the following regkey:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Discardable\PostSetup\Component Categories64\
-You should see two subkeys labeled: (These are the cached BHO IE objects related to the Web Recorder)
{00021493-0000-0000-C000-000000000046}
{00021494-0000-0000-C000-000000000046}
- Delete only the above two mentioned keys (This will force IE to recache them next launch)
6. Try to start the web capture again from SCOM 2012 SP1.
7. When IE10 Launches enable the add-on again if you are prompted.
8. If you still don't see the Web-Recorder pane in IE you can now show it by:
- View - Explorer bars - Web Recorder

How do i use the jsp session in web application

pls i do i go about trying to maintain a user in a web application when he sign in so that his state would be mainain through out the other pages and also adding sound to my pge the page is being design with jsp thank u frm hamzah

I see what you are saying.
The JNDI approach should work-we will try to reproduce this internally.
I would recommend leveraging the OSGi service registry, instead of using JNDI, however. The Event Server is a modular server based on OSGi, so one should use the OSGi service registry whenever possible instead of using the jndi registry. Jndi is primarily there to support legacy code that requires Jndi.
Any data sources that you configure are automatically registered in the OSGi service registry. When there is more than one data source they can be distinguished using their name.
There are a couple of options.
If you want to inject a reference to your datasource into a Spring bean, you can use an annotation, @Service, to annotate a setter method on your bean (see my previous post). The container will then inject a reference to the data source into the bean.
You can also put the following in your spring application context file
<osgi:reference id="myDataSource"
interface="javax.sql.DataSource"/>
This creates a bean proxy that references the datasource by looking up the datasource in the OSGi service registry. It works similarly to JndiObjectFactoryBean, but it uses the OSGi service registry instead of the JNDI registry. You can read more about it here
http://www.springframework.org/osgi/specification
(Look in section 3.3)
Hope that helps.
Seth
Edited by swhite at 08/01/2007 6:19 PM

Unique Session en web application?? How?

How can i to force in my web application that my clients can only loggon one time at same time?, local vars in the application? if the client shutdown de PC?, i use OID for authentication, any way?
Any data, url?
Thanks

You basically have to keep track of who is logged in yourself. Use an HttpSessionBindingListener to make sure you are notified when a session expires, so you can let the user back in.

Preserve session across web applications.

I've deployed 2 different web applications, each part of their own .ear . Is
there any way to make the two web applications use the SAME session object
? My problem is that when I store an object in the session within one
application, the object isn't available in the session-context for the other
application.
I've also verified that they are actually using two different sessions by
tracking the session-id at script-level. I'm using wl 6.1 if that helps
//Linus Nikander - [email protected]

Linus,
We were faced with a similar situation but our team responsible for the
Web applications decided to go with a single web-app in the end and we
bear the cost of not very nice build.
An alternative solution for you will be instead of setting the
authentication in the session to set the user object in a cookie and
then use it for all web applications.
I believe that is the idea behind the Weblogic Identity Assertion
security providers
(http://e-docs.bea.com/wls/docs70/dvspisec/ia.html#1145598) but we've
never had to deal with it yet.
Regards,
Dejan
Linus Nikander wrote:
Thank you for your answer, a few follow-up questions.
As you point out I definitely don't want to implement something that is
outside the spec. and vendor specific. But how then would you suggest
solving the following situation:
At the moment we are co-operating with other actors within a larger project.
Our task is to design and code one of the modules, which consists of EJBs,
JSPs and Servlets. From the beginning this was successfully deployed and
packaged in a single EAR.
Problems arose when we started to integrate our EAR with a WAR written by
one of the other participants in the project. The problem was that they are
responsible for authentication for the whole site, i.e. the login-module.
The've implemented the login so that when a user successfully logs in, a
"user"-object is stored in the session. The very fact that the user-object
exists means that the user is validated. The method for verifying that a
user is authenticated is thus to check the session for the occurence of this
object before execution of any JSP or Servlet. For files within their WAR
this works fine, but as soon as a call is made to a JSP or Servlet within
our EAR the method of authentication breaks because a new session is
generated, void of the user-object.
We've solved the problem by co-deploying a single WAR. In my opinion this is
a really ugly solution because there is no longer a clean separation of
"their" and our files, and it makes deployment a real hassle.
Skipping any points of view as to their chosen method of authentication (we
don't like it either but its going to remain unchanged no matter what), do
you see any other way for us to get things to work where we (hopefully) can
keep our files separate from one another.
//Linus Nikander - [email protected]
"Deyan D. Bektchiev" <[email protected]> wrote in message
news:[email protected]...
It would be a violation of the Servlet spec to do so and although in 6.0
you could share the session at least in 7.0 it isn't the case.
I'm not familiar with 6.1 but even if you could do it there then your
application is not going to be portable since you'll be relying on a
specific vendor implementation.
Regards,
Dejan
Linus Nikander wrote:
I've deployed 2 different web applications, each part of their own .ear .
Is
there any way to make the two web applications use the SAME session
object
? My problem is that when I store an object in the session within one
application, the object isn't available in the session-context for the
other
application.
I've also verified that they are actually using two different sessions by
tracking the session-id at script-level. I'm using wl 6.1 if that helps
//Linus Nikander - [email protected]

Sharing sessions between web applications (WAR files)

I am using weblogic 6.1. The opinion I have read indicates that
          sessions cannot be shared between WAR files. That is, I cannot put an
          attribute on the session from a servlet/JSP in one WAR file and read
          it out from the other. The only justification I've seen is "security".
          Now, I find this rather difficult to accept for several reasons:
          1. I cannot fathom what kind of "security" would prevent me from
          sharing the session between two web applications that I wrote myself.
          Let's say I want to write a system that I divide up, for
          modularity/separate deployment purposes, into 5 different WAR files.
          Why should I not be able to just sign on once and pass that logon
          information in the session from one to the other? (I know, I can use
          cookies or URL rewriting - but that doesn't seem to be to be a good
          solution. And if you can share information through cookies, why not
          through sessions?) What about other user information like currently
          selected language?
          2. Several app servers (iPlanet and I have heard two others) allow you
          to share sessions between WARs. Why not weblogic?
          Thanks for any information you can give me. I have not been able to
          find anything in weblogic documentation about this. If I am
          misunderstanding the server capabilities, please enlighten me.
          Thanks,
          <>< gary


http://www.weblogic.com/docs51/classdocs/webappguide.html
          --kumar allamraju
          Grant Lewis wrote:
          > I'm currently evaluating weblogic and I can't find any references in
          > their documentation set stating they support web applications or war
          > files. They explicitly state in their docs the Servlet 2.2 specification
          > has been supported since version 4.5. I'm evaluating version 5.1. Can
          > anybody clear up the confusion for me.
          >
          > Grant

How Session based web Application should work even after session expiry??

I am looking for an experts opinion that how could I develop an application that should work after the expiry of web session too in the same way as it works in web session.
How the session should be activated.
As I understood, what if I store all the required information in xml and then on unlock session reload all the information from XML.
Am I right or is there any other better way to do using servlets.
Basically I need to implement Lock and UnLock mechanism in an application.
Thanks

I'm not sure I understand your question. But since no one answered this yet, here is my idea:
If the user's session expires, any unsaved data is lost. The user should expect this.
If do need to save any data, normally you store it it a database table with the user's ID so you can retrieve it. Two free databases are Oracle Lite and MySql. However, this will take quite a bit of time to learn if you are not already familiar with databases. Storing it in a database and retrieving it is much much faster than storing it in a file.

Create a new web application, how shall I update the file server.xml

Hi,
I will create a new web application, i.e named newApp. Then I create a file structure as follows:
- <server-root>/newApp
- <server-root>/newApp/WEB-INF
- <server-root>/newApp/WEB-INF/classes
Then I must tell the server that I have created a new web application. Then I must update my file server.xml, How shall I do this and where in the file shall I type in the new information?
I use windows XP Pro, and Tomcat 4.1.27.
My server.xml file looks like below:



<Server port="8005" shutdown="SHUTDOWN" debug="0">


<Listener className="org.apache.catalina.mbeans.ServerLifecycleListener"
debug="0"/>
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"
debug="0"/>

<GlobalNamingResources>

<Environment name="simpleValue" type="java.lang.Integer" value="30"/>

<Resource name="UserDatabase" auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved">
</Resource>
<ResourceParams name="UserDatabase">
<parameter>
<name>factory</name>
<value>org.apache.catalina.users.MemoryUserDatabaseFactory</value>
</parameter>
<parameter>
<name>pathname</name>
<value>conf/tomcat-users.xml</value>
</parameter>
</ResourceParams>
</GlobalNamingResources>


<Service name="Tomcat-Standalone">


<Connector className="org.apache.coyote.tomcat4.CoyoteConnector"
port="8080" minProcessors="5" maxProcessors="75"
enableLookups="true" redirectPort="8443"
acceptCount="100" debug="0" connectionTimeout="20000"
useURIValidationHack="false" disableUploadTimeout="true" />




<Connector className="org.apache.coyote.tomcat4.CoyoteConnector"
port="8009" minProcessors="5" maxProcessors="75"
enableLookups="true" redirectPort="8443"
acceptCount="10" debug="0" connectionTimeout="0"
useURIValidationHack="false"
protocolHandlerClassName="org.apache.jk.server.JkCoyoteHandler"/>












<Engine name="Standalone" defaultHost="localhost" debug="0">



<Logger className="org.apache.catalina.logger.FileLogger"
prefix="catalina_log." suffix=".txt"
timestamp="true"/>


<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
debug="0" resourceName="UserDatabase"/>







<Host name="localhost" debug="0" appBase="webapps"
unpackWARs="true" autoDeploy="true">





<Logger className="org.apache.catalina.logger.FileLogger"
directory="logs" prefix="localhost_log." suffix=".txt"
timestamp="true"/>

<DefaultContext reloadable="true"/>

<Context path="" docBase="ROOT" debug="0"/>

<Context path="/examples" docBase="examples" debug="0"
reloadable="true" crossContext="true">
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="localhost_examples_log." suffix=".txt"
timestamp="true"/>
<Ejb name="ejb/EmplRecord" type="Entity"
home="com.wombat.empl.EmployeeRecordHome"
remote="com.wombat.empl.EmployeeRecord"/>




<Environment name="maxExemptions" type="java.lang.Integer"
value="15"/>
<Parameter name="context.param.name" value="context.param.value"
override="false"/>
<Resource name="jdbc/EmployeeAppDb" auth="SERVLET"
type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/EmployeeAppDb">
<parameter><name>username</name><value>sa</value></parameter>
<parameter><name>password</name><value></value></parameter>
<parameter><name>driverClassName</name>
<value>org.hsql.jdbcDriver</value></parameter>
<parameter><name>url</name>
<value>jdbc:HypersonicSQL:database</value></parameter>
</ResourceParams>
<Resource name="mail/Session" auth="Container"
type="javax.mail.Session"/>
<ResourceParams name="mail/Session">
<parameter>
<name>mail.smtp.host</name>
<value>localhost</value>
</parameter>
</ResourceParams>
<ResourceLink name="linkToGlobalResource"
global="simpleValue"
type="java.lang.Integer"/>
</Context>
</Host>
</Engine>
</Service>
</Server>

To use servlets u have indeed to update your web.xml...Well I'm not sure this is relevant to your case anyway.
You have to add a <servlet> element to this file.
Something like this:
<servlet>
<servlet-name>blabla</servlet-name>
<servlet-class>blablapackage.Blablaclass</servlet-class>
<init-param>...</init-param>
</servlet>
Now this may not solve your problem. Make sure you refer to your servlets using their full qualified names.btw, just to be sure, what is your definition of "servlet"? (i mean: any java class or only javax.servlet.Servlet)

Problem with Configuring Tomcat for running jsp web applications..Plz HELP

I am using Tomcat 5.5 and Jdk 1.5.0_12 and Oracle 10g. I am using jdbc-odbc bridge connection
to connect to the database. I have placed my project folder called
tdm under the webapps folder in Tomcat. This 'tdm' folder consists of
a collection of html pages,jsp pages and images of my project. Also I created a
WEB-INF folderand in that I have lib folder which contains catalina-root.jar
, classes12.jar and nls_charset.jar files. And also in the WEB-INF folder I have the web.xml
file which looks like this
<?xml version="1.0" encoding="ISO-8859-1"?>

<web-app>
<resource-ref>
<description>Oracle Datasource example</description>
<res-ref-name>jdbc/gdn</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</web-app>
My Server.xml file in Tomcat\conf folder is as follows



<Server port="8005" shutdown="SHUTDOWN">

<Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" />
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />

<GlobalNamingResources>

<Environment name="simpleValue" type="java.lang.Integer" value="30"/>

<Resource name="UserDatabase" auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved"
factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
pathname="conf/tomcat-users.xml" />
<Resource name="jdbc/gdn" auth="Container"
type="javax.sql.DataSource" driverClassName="sun.jdbc.odbc.JdbcOdbcDriver"
url="jdbc:odbc:gdn"
username="system" password="tiger" maxActive="20" maxIdle="10"
maxWait="-1"/>
</GlobalNamingResources>


<Service name="Catalina">


<Connector
port="5050" maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
connectionTimeout="20000" disableUploadTimeout="true" />

     



<Connector port="8009"
enableLookups="false" redirectPort="8443" protocol="AJP/1.3" />






<Engine name="Catalina" defaultHost="localhost">




<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
resourceName="UserDatabase"/>







<Host name="localhost" appBase="webapps"
unpackWARs="true" autoDeploy="true"
xmlValidation="false" xmlNamespaceAware="false">









<Context path="/tdm" docBase="tdm" debug="0" reloadable="true" />
</Host>
</Engine>
</Service>
</Server>
I have set the context path to /tdm in the server.xml file. Should this be placed in context.xml?
My first page in the project is called Homepage.html. To start my project I give http://localhost:5050/tdm/homepage.html
in a browser. Here I accept a username and password from the user and then do the validation in
a valid.jsp file, where I connect to the database and check and use jsp:forward to go to next pages
accordingly. However when I enter the username and password and click Go in the homepage, nothing is
displayed on the next page. The URL in the browser says valid.jsp but a blank screen appears.
WHY DOES IT HAPPEN SO? DOES IT MEAN THAT TOMCAT IS NOT RECOGNIZING JAVA IN MY SYSTEM OR IS IT A PROBLEM
WITH THE DATABASE CONNECTION OR SOMETHING ELSE? I FEEL THAT TOMCAT IS NOT EXECUTING JSP COMMANDS?
IS IT POSSIBLE?WHY WILL THIS HAPPEN?
I set the JAVA_HOME and CATALINA_HOME environment to the jdk and tomcat folders resp.
Is there any other thing that I need to set in classpath? Should I have my project as a
WAR file in the webapps of TOMCAT or just a folder i.e. directory structure will fine?

I am using Tomcat 5.5 and Jdk 1.5.0_12 and Oracle 10g. I am using jdbc-odbc bridge connection
to connect to the database. I have placed my project folder called
tdm under the webapps folder in Tomcat. This 'tdm' folder consists of
a collection of html pages,jsp pages and images of my project. Also I created a
WEB-INF folderand in that I have lib folder which contains catalina-root.jar
, classes12.jar and nls_charset.jar files. And also in the WEB-INF folder I have the web.xml
file which looks like this
<?xml version="1.0" encoding="ISO-8859-1"?>

<web-app>
<resource-ref>
<description>Oracle Datasource example</description>
<res-ref-name>jdbc/gdn</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</web-app>
My Server.xml file in Tomcat\conf folder is as follows



<Server port="8005" shutdown="SHUTDOWN">

<Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" />
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />

<GlobalNamingResources>

<Environment name="simpleValue" type="java.lang.Integer" value="30"/>

<Resource name="UserDatabase" auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved"
factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
pathname="conf/tomcat-users.xml" />
<Resource name="jdbc/gdn" auth="Container"
type="javax.sql.DataSource" driverClassName="sun.jdbc.odbc.JdbcOdbcDriver"
url="jdbc:odbc:gdn"
username="system" password="tiger" maxActive="20" maxIdle="10"
maxWait="-1"/>
</GlobalNamingResources>


<Service name="Catalina">


<Connector
port="5050" maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
connectionTimeout="20000" disableUploadTimeout="true" />

     



<Connector port="8009"
enableLookups="false" redirectPort="8443" protocol="AJP/1.3" />






<Engine name="Catalina" defaultHost="localhost">




<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
resourceName="UserDatabase"/>







<Host name="localhost" appBase="webapps"
unpackWARs="true" autoDeploy="true"
xmlValidation="false" xmlNamespaceAware="false">









<Context path="/tdm" docBase="tdm" debug="0" reloadable="true" />
</Host>
</Engine>
</Service>
</Server>
I have set the context path to /tdm in the server.xml file. Should this be placed in context.xml?
My first page in the project is called Homepage.html. To start my project I give http://localhost:5050/tdm/homepage.html
in a browser. Here I accept a username and password from the user and then do the validation in
a valid.jsp file, where I connect to the database and check and use jsp:forward to go to next pages
accordingly. However when I enter the username and password and click Go in the homepage, nothing is
displayed on the next page. The URL in the browser says valid.jsp but a blank screen appears.
WHY DOES IT HAPPEN SO? DOES IT MEAN THAT TOMCAT IS NOT RECOGNIZING JAVA IN MY SYSTEM OR IS IT A PROBLEM
WITH THE DATABASE CONNECTION OR SOMETHING ELSE? I FEEL THAT TOMCAT IS NOT EXECUTING JSP COMMANDS?
IS IT POSSIBLE?WHY WILL THIS HAPPEN?
I set the JAVA_HOME and CATALINA_HOME environment to the jdk and tomcat folders resp.
Is there any other thing that I need to set in classpath? Should I have my project as a
WAR file in the webapps of TOMCAT or just a folder i.e. directory structure will fine?

Session sharing among different web application under Oracle AS

Hi,
I'm looking for some information on web application session information sharing under Oracle AS10.1.3.
any pointers are highly appreciated.
Thanks,
Narasimha.

Hello,
I see that you have duplicate your post in different forums, Session sharing among different web application under Oracle AS10.1.3.
Regards
Tugdual Grall

Session time out in a web application

Hi,
I am making a struts based web application. For session time out validation I have made an entry in the web.xml file as <session-config>
<session-timeout>1</session-timeout>
</session-config>
In case the user's session time out occurs then he should be directed back to the log in page.
Can any one tell me how to proceed in this case and what are the best practices.
thanks

Hi
I've tested it with OC4J and it works both ways.
I do think that you must have the
<session-config> tag present though for the setMax... method to
work, observe that this method is for seconds and not millisecond
regards
//Mike
Hi all,
I try to manage by my application the http session time-out.
Change it in a web.xml works fine , but if in my servlet i try
to change it using setMaxInactiveInterval(MILLISECOND) the result
is that the session became invalidate after few seconds instead
50 minutes ad example ....
Answer ????
thks
Carlo Mossa

Hi, I developed a web application using HTML5-Offline Application Cache mechanism. Inspite of deleting the cache as mentioned in the above steps, Firefox still maintains a copy of the page in it's cache. Also, a serious bug is, even though we delete all

== Issue
==
I have a problem with my bookmarks, cookies, history or settings
== Description
==
Hi,
I developed a web application using HTML5-Offline Application Cache mechanism. Inspite of deleting the cache as mentioned in the above steps, Firefox still maintains a copy of the page in it's cache. Also, a serious bug is, even though we delete all temp files used by Firefox, and open the previously cached page, it displays it correctly, but upon refreshing/reloading it again shows the previous version of the page maintained in the cache.
== Troubleshooting information
==
HTML5: Application Caching
.style1 {
font-family: Consolas;
font-size: small;
text-align: left;
margin-left: 80px;
function onCacheChecking(e)
printOutput("CHECKINGContents of the manifest are being checked.", 0);
function onCacheCached(e) {
printOutput("CACHEDAll the resources mentioned in the manifest have been downloaded", 0);
function onCacheNoUpdate(e)
printOutput("NOUPDATEManifest file has not been changed. No updates took place.", 0);
function onCacheUpdateReady(e)
printOutput("UPDATEREADYChanges have been made to manifest file, and were downloaded.", 0);
function onCacheError(e) {
printOutput("ERRORAn error occured while trying to process manifest file.", 0);
function onCacheObselete(e)
printOutput("OBSOLETEEither the manifest file has been deleted or renamed at the source", 0);
function onCacheDownloading(e) {
printOutput("DOWNLOADINGDownloading resources into local cache.", 0);
function onCacheProgress(e) {
printOutput("PROGRESSDownload in process.", 0);
function printOutput(statusMessages, howToTell)
* Outputs information about an event with its description
* @param statusMessages The message string to be displayed that describes the event
* @param howToTell Specifies if the output is to be written onto document(0) or alert(1) or both(2)
try {
if (howToTell == 2) {
document.getElementById("stat").innerHTML += statusMessages;
window.alert(statusMessages);
else if (howToTell == 0) {
document.getElementById("stat").innerHTML += statusMessages;
else if (howToTell == 1) {
window.alert(statusMessages);
catch (IOExceptionOutput) {
window.alert(IOExceptionOutput);
function initiateCaching()
var ONLY_DOC = 0;
var ONLY_ALERT = 1;
var BOTH_DOC_ALERT = 2;
try
if (window.applicationCache)
var appcache = window.applicationCache;
printOutput("BROWSER COMPATIBILITYSUCCESS!! AppCache works on this browser.", 0);
appcache.addEventListener('checking', onCacheChecking, false);
appcache.addEventListener('cached', onCacheCached, false);
appcache.addEventListener('noupdate', onCacheNoUpdate, false);
appcache.addEventListener('downloading', onCacheDownloading, false);
appcache.addEventListener('progress', onCacheProgress, false);
appcache.addEventListener('updateready', onCacheUpdateReady, false);
appcache.addEventListener('error', onCacheError, false);
appcache.addEventListener('obsolete', onCacheObselete, false);
else
document.getElementById("stat").innerHTML = "Failure! I cant work.";
catch (UnknownError)
window.alert('Internet Explorer does not support Application Caching yet.\nPlease run me on Safari or Firefox browsers\n\n');
stat.innerHTML = "Failure! I cant work.";
== Firefox version
==
3.6.3
== Operating system
==
Windows XP
== User Agent
==
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 ( .NET CLR 3.5.30729; .NET4.0E)
== Plugins installed
==
*-Shockwave Flash 10.0 r45
*Default Plug-in
*Adobe PDF Plug-In For Firefox and Netscape "9.3.2"
*NPRuntime Script Plug-in Library for Java(TM) Deploy
*The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
*Google Update
*4.0.50524.0
*Office Live Update v1.4
*NPWLPG
*Windows Presentation Foundation (WPF) plug-in for Mozilla browsers
*Next Generation Java Plug-in 1.6.0_20 for Mozilla browsers
*Npdsplay dll
*DRM Store Netscape Plugin
*DRM Netscape Network Object
Thanks & Regards,
Kandarpa Chandrasekhar Omkar
Software Engineer
Wipro Technologies
Bangalore.
[email protected]
[email protected]

We have had this issue many, many times before including on the latest 3.6 rev. It appears that when the applicationCache has an update triggered by a new manifest file, the browser may still use only its local network cache to check for updates to the files in the manifest, instead of forcing an HTTP request and revalidating both the browser cache and the applicationCache versions of the cached file (seems there is more than one). I have to assume this is a browser bug, as one should not have to frig with server Cache-Control headers and such to get this to work as expected (and even then it still doesn't sometimes).
The only thing that seems to fix the problem is setting network.http.use-cache to false (default is true) in about:config . This helps my case because we only ever run offline (applicationCache driven) apps in the affected browser (our managed mobile apps platform), but it will otherwise slow down your browser experience considerably.

Inactive status - v$session users list over WEB application

Hi all
When user connect through asp or asp.net, we create a connection in the session object. New sid gets created with each session.
When user normally logs out the application, his sid gets finished in the v$session users list. But when he dees not logs out in the normal way as we can not force thousand of users over WEB to log out normally, what will happen to the v$session ?.
1st - We wish to know to know that whether the list will run into thousands of inactive status users OR they automatically gets finished over time. We use the default profile as applicable to new user.
2nd - If the list of inactive status users gets increased to thousands of users which can be possible for the WEB application , there must be some limit fixed by Oracle 8i/ 10g database OR there may be serious performance problems. This simultaneous connection of thousands of users over WEB is easily possible and when connection is created in session object , what could be the scenario. We avoid creating connection object in the application start event to improve performance for the given sesion.
Any help is appreciated.
Suresh bansal

Thanks for prompt reply
1st - Can u give some idea for create connection pools using asp.net environments. Further in the connection pool environment as to how much simultaneous running connections we should need to open and how.
2nd - If we have pool of say 100 connections and there are more number of simultaneous WEB users, what will happen to the application as to whether it gets to hanging /waiting for the pool connection to be free or give error ?.
Suresh Bansal

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