Session sharing in weblogic 7.0

          Hi
          I am using weblogic 7.0 and want to know if we package 2 wars in one ear can we
          share session accross 2 wars.
          Say war 1 puts a variable in session
          and then from war 2 another variable tries to access that varible. Will this be
          possible. THEY ARE IN THE SAME EAR.
          Please let me know

Ace:
Shall I set this parameter in weblogic descriptor file ? If so, how do I set
? Thanks for your information here !
[email protected] (Ace) wrote:
The parameter for ctx.lookup() is what you have set the JNDI name for
QueryHome in weblogic.
~Ace.
Cottonxu <[email protected]> wrote in message news:<[email protected]>...
Hi:
I tried dynamic query in weblogic 7.0 for almost a month but stillfailed. So I wish someone can help me .
I used dynamic query in a session bean.
QueryHome queryHome = (QueryHome) ctx.lookup("java:comp/env/ejb/BooksEJB");
But this line always returns null for queryHome. I am sure my JNDIfor CMP 2.0 BooksEJB is right.
I also set <enable-dynamic-queries>True</enable-dynamic-queries>
in descriptor file followed by instructions in bea documentation.
Thanks !

Similar Messages

Session sharing among multiple WAR files inside an EAR file

Hi all,
Is there a way where I can share my session object among multiple WAR files which are inside an EAR file?
Please suggest.

r035198x wrote:
Some application servers (like Weblogic) allow to configure session sharing when you deploy the application.Sidenote: which is completely against the servlet spec.

Does Session Sharing feature provided by SAP Net Weaver application server

Hi All,
Session Sharing is an additional feature provided by Tomcat , Weblogic and Web sphere application servers.
Is this feature available in SAP Net Weaver application server?
Brief description on Session Sharing
Session Sharing specifies whether HTTP sessions are shared across multiple Web applications.
In Weblogic this is an optional feature customizable in weblolgic-application.xml
Sample weblogic-application.xml
<?xml version='1.0' encoding='UTF-8'?>
<weblogic-application xmlns="http://www.bea.com/ns/weblogic/90" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<session-descriptor>
<persistent-store-type>replicated_if_clustered</persistent-store-type>
<sharing-enabled>true</sharing-enabled>
</session-descriptor>
</weblogic-application>
session-descriptor (Optional Element ) - Specifies a list of configuration parameters for servlet sessions.
sharing-enabled (Optional Element ) - Specifies whether HTTP sessions are shared across multiple Web applications. Default value is false.
Thanks in advance.
Regard's
Srikanth
Edited by: Srikanth A on May 14, 2010 7:36 PM

Hi,
You cannot set up Garbage collection frequency. it is internally handled by Java when the Heap size is filled up.
You can always fine tune your server to SAP recommendations.
Note 723909 is a good starting point.
Also other checks include that you use SAP recommended Java versions, OS patches and also that you have enough physical memory.
Thanks & Regards,
Vijith

How to share Sessions between 2 Weblogic ?

Hello,
I've some problems in setting on Weblogic. Suppose there are 2
Weblogic Servers, WebA and WebB. A New Session will be created if user
go to the page in WebB from WebA. Is there any methods to share the
Session between them ? I turned on the following properties in
Weblogic.properties already.
weblogic.httpd.session.persistence=true
weblogic.httpd.session.persistentStoreType=jdbc
weblogic.httpd.session.persistentStorePool=demoPool
weblogic.httpd.session.persistentStoreShared=true
But a new entry will be created as long as user go to the page at WebB
from WebA.
In fact, I want to use the Session entry created by WebA.
Thx
Lim

You need to make sure that session tracking is enabled,
either via cookies or url rewriting. Otherwise, the incoming
request won't be able to tell the server which session it belongs to.
Jason
"Cheung" <[email protected]> wrote in message news:[email protected]..
Hello,
I've some problems in setting on Weblogic. Suppose there are 2
Weblogic Servers, WebA and WebB. A New Session will be created if user
go to the page in WebB from WebA. Is there any methods to share the
Session between them ? I turned on the following properties in
Weblogic.properties already.
weblogic.httpd.session.persistence=true
weblogic.httpd.session.persistentStoreType=jdbc
weblogic.httpd.session.persistentStorePool=demoPool
weblogic.httpd.session.persistentStoreShared=true
But a new entry will be created as long as user go to the page at WebB
from WebA.
In fact, I want to use the Session entry created by WebA.
Thx
Lim

HOWTO:Deploy BC4J as Session Bean in Weblogic

This document describes Howto deploy a BC4J Appmodule as EJB Session Bean to Weblogic and
test the appmodule through the BC4J tester.
=>create a BC4J Application using Business Components Wizard.
=>test it using BC4J tester
=>make the Application Module Remotable [list]
[*]Select Appmodule and right mouse on it to select the edit option
[*]Select Remote tab
[*]Select the check box for Remotable Application Module
[*]Select EJB Session Bean and shuttle it from Available list to Selected list
[*]Click on the finish button[list]
=> Do File| Save All and a Rebuild on the project
=> create the weblogic XML Deployment Descriptor[list]
[*]Choose File|New
[*]Select the web objects tab
[*]Select XML and click ok
[*]Rename the file as ejb-jar.xml using File|Rename
[*]Save it in the JDEV_HOME/myclasses/META-INF directory.
[*]Open the xml file by double clicking on it.
[*]Paste the following into the file
<!DOCTYPE ejb-jar PUBLIC '-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 1.1//EN' 'http://java.sun.com/j2ee/dtds/ejb-jar_1_1.dtd'>
<ejb-jar>
<enterprise-beans>
<session>
<ejb-name>wl.WlModule</ejb-name>
<home>wl.common.ejb.WlModuleHome</home>
<remote>wl.common.ejb.RemoteWlModule</remote>
<ejb-class>wl.server.ejb.WlModuleServerEJB</ejb-class>
<session-type>Stateful</session-type>
<transaction-type>Bean</transaction-type>
</session>
</enterprise-beans>
<assembly-descriptor>
</assembly-descriptor>
</ejb-jar>
[*]Choose File|New
[*]Select the web objects tab
[*]Select XML and click ok
[*]Rename the file as weblogic-ejb-jar.xml using File|Rename
[*]Save it in the JDEV_HOME/myclasses/META-INF directory.
[*]Open the xml file by double clicking on it.
[*]Paste the following into the file
<!DOCTYPE weblogic-ejb-jar PUBLIC '-//BEA Systems, Inc.//DTD WebLogic 5.1.0 EJB//EN' 'http://www.bea.com/servers/wls510/dtd/weblogic-ejb-jar.dtd'>
<weblogic-ejb-jar>
<weblogic-enterprise-bean>
<ejb-name>wl.WlModule</ejb-name>
<caching-descriptor>
<max-beans-in-free-pool>100</max-beans-in-free-pool>
<max-beans-in-cache>100</max-beans-in-cache>
<idle-timeout-seconds>60</idle-timeout-seconds>
</caching-descriptor>
<jndi-name>wl.WlModule</jndi-name>
</weblogic-enterprise-bean>
</weblogic-ejb-jar>
In this example "wl" is the package name and "WlModule" is the Appmodule name.[list]
=> generate the jar file for appmodule along with xml deployment descriptors[list]
[*]from the command line in JDEV_HOME/myclasses directory run
[*]jar cvf0 wlappmodule.jar wl META-INF[list]
=> edit the setenv.cmd file in WEBLOGIC_HOME directory[list]
[*]set JAVA_HOME=f:\jdev32\java1.2
[*]set JBOLIB=f:\jdev32\lib
[*]set JDBC_CLASSES=f:\jdev32\jdbc\lib\oracle8.1.7\classes12.zip
[*]set JBO_RUNTIME=%JBOLIB%\jboorasql.zip;%JDBC_CLASSES%;%JBOLIB%\jbodatum12.zip;%JBOLIB%\xmlparserv2.jar;%JBOLIB%\jbomt.zip;%JBOLIB%\jboejb.jar
[*]add JBO_RUNTIME in the set CLASSPATH variable[list]
=> create a bc4j deploy batch file "Deploybc4j.cmd" in the WEB_LOGIC HOME
which will generate the server side jar files
@setlocal
set JAVA=java
set JAVAC=javac
set BEAN_JAR=%1
set EJB_TEMP=f:\jdev32\myclasses\wl
set XMLPARSERV2=f:\jdev32\lib\xmlparserv2.jar;
set JDBC_LIBS=f:\jdev32\jdbc\oracle8.1.7\lib\classes12.zip
set JBO_EJB_RUNTIME=f:\jdev32\lib\jbomt.zip;f:\jdev32\lib\jboejb.jar;%XMLPARSERV2%;%JDBC_LIBS%
set CLASSPATH=%CLASSPATH%;%JBO_EJB_RUNTIME%;%BEAN_JAR%;%EJB_TEMP%
%JAVA% weblogic.ejbc -compiler javac f:\jdev32\myclasses\wlappmodule.jar f:\jdev32\myclasses\wlAppModuleGenerated.jar;f:\jdev32\lib\jbodomorcl.zip
pushd %EJB_TEMP%
@endlocal
Note: substittue appropriate jar file and directory structure names
=> Run setenv.cmd
=> Run deploybc4j.cmd
=> Configure Weblogic server[list]
If your weblogic server is residing on a different machine then
[*]copy wlAppModuleGenerated.jar (generated jar file from deploybc4j.cmd)
[*]Copy classes12.zip from JDEV_HOME/jdbc/lib/oracle8.1.7/ directory
[*]Copy jbodomorcl.zip
[*]jbodatum12.zip
[*]xmlparserv2.jar
[*]jbomt.zip
[*]jboejb.jar from JDEV_HOME/lib directory
[*]edit weblogic.properties file in WEBLOGIC_HOME directory
[*]In the WEBLOGIC EJB DEMO PROPERTIES sectio
[*]add weblogic.ejb.deploy=E:/weblogic/myserver/wlAppModuleGenerated.jar
(generated jar file from deploybc4j.cmd file)
[*]edit startweblogic.cmd file in WEBLOGIC_HOME directory
[*]set POST_CLASSPATH=f:\jdev32\jdbc\oracle8.1.7\lib\classes12.zip;f:\jdev32\lib\jboorasql.zip;f:\jdev32\lib\jbodatum12.zip;f:\jdev32\lib\xmlparserv2.jar;f:\jdev32\lib\jbomt.zip;f:\jdev32 \lib\jboEJB.jar;f:\jdev32\lib\jbodomorcl.zip
[*]add E:/weblogic/myserver/wlAppModuleGenerated.jar
(generated jar file from deploybc4j.cmd file) in the weblogic_classpath setting[list]
Note: modify the directory structure of jar files as apporpriate
=> Run the BC4J tester to test the deployed BC4J Appmodule as session bean to Weblogic[list]
[*]Add a new library
[*]Select the Project in which you developed the BC4J Appmodule
[*]Project | Project Properties
[*]select libraries tab
[*]Click on Add
[*]Click on New
[*]Specify "JBO WL Client" in the NAME
[*]Click on ... button for adding the jar files
[*]Click on Add/Zip jar button to add the following files
weblogicaux.jar
jboremoteejb.zip
jboremote.zip
<Weblogic_home>/classes
[*]Click on OK
[*]Start the weblogic server
[*]Bring the BC4J Tester by doing a right mouse on the appmodule and selecting Test option
[*]In the Middle Tier Server Type Select "Weblogic"
[*]Specify Host name and port # of weblogic server
[*]Click on Connect[list]
raghu
null

Although this explains how to then deploy to Weblogic on another server, it still presumes that it is installed on the same computer as JDev. I moved the weblogic.jar file over to the computer and fudged a few things to get it to work.
Also, I am testing this with Weblogic 6.0, so some of the information does not work as prescribed. I edited the config.xml instead of the weblogic.properties file. I am trying to figure out where to put all of the *.jar and *.zip files that I copied over to the Solaris machine with Weblogic. Any suggestions?
And one of the steps in the section to create the deploybc4j.cmd file is wrong. It says
"%JAVA% weblogic.ejbc -compiler javac f:\jdev32\myclasses\wlappmodule.jar f:\jdev32\myclasses\wlAppModuleGenerated.jar;f:\jdev32\lib\jbodomorcl.zip"
Which does not work. I took off the last part:
"%JAVA% weblogic.ejbc -compiler javac f:\jdev32\myclasses\wlappmodule.jar f:\jdev32\myclasses\wlAppModuleGenerated.jar"
and it worked. It was getting that whole last part and trying to create a directory with that name and failing.
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by David Shanes ([email protected]):
This seems to assume that JDev and Weblogic are installed on the same server (I refer to the section on setting the setenv.cmd file in the WEBLOGIC_HOME dir that includes the path to the JDev install.
I have JDev installed on a Win 2k box and Weblogic installed on a Solaris. Any suggestions? I got all the way up to the setenv.cmd step fine.<HR></BLOCKQUOTE>
null

Load balancing and session sharing

Hi,
in my company we have the following situation:
We have 2 instances of the same web application on differend servers.
An external load balancer (Alteon) routes the requests to these instances.
The problem:
If one instance is shutting down, all the sessions of this app are gone. These users has to login again.
The question:
Is it possible to avoid this?
Is is possible to keep these session, so the users don't have to login again?
Maybe with a kind of session sharing between these 2 instances?
using:
oc4j standalone - 10.1.3.1
OS: Windows
thank you
Marcus

The solution:
Multicast IP replication is the default replication protocol used in a standalone OC4J installation
see: http://download.oracle.com/docs/cd/B32110_01/web.1013/b28950/cluster.htm#BABBHGHJ
-> Configuring Multicast Replication

Session Sharing between Webapps

          Hi everybody,
          I have read that session sharing between webapps is possible since Wls 6.1 using
          the same name
          for a cookie in the webapps.
          I have created a webapp named myPortal (for example) and a second named Navigation.
          The first webapp
          includes content of the second webapp
          After deploying the webapps in WLS and printing out the sessionid in each of the
          webapps, I found out
          that unfortionally the sessionid in the two webapps are not identical.
          My Question is: Is session sharing possible, or should I create a workaround?
          Here is my environment:
          WLS 6.1 on SUN running in developmentmode
          two webapps, deployed as .war file and/or as .ear file
          Cookie Name is configured to be identical in the two .war Files
          Regards,
          Ed


Search this newsgroup for a reply post on this by me. I incorrectly went down the
          primrose path on this one, too. I was corrected by Cameron Purdy. I did a bunch of
          impirical research on this and came to the same conclusion you have come to. The spec
          doesn't require it and, in fact, says that separate webapps have separate contexts, so
          they don't share sessions, even if the cookie is the same name.
          Bill
          Eduard van den Bongard wrote:
          > Hi everybody,
          >
          > I have read that session sharing between webapps is possible since Wls 6.1 using
          > the same name
          > for a cookie in the webapps.
          > I have created a webapp named myPortal (for example) and a second named Navigation.
          > The first webapp
          > includes content of the second webapp
          > After deploying the webapps in WLS and printing out the sessionid in each of the
          > webapps, I found out
          > that unfortionally the sessionid in the two webapps are not identical.
          > My Question is: Is session sharing possible, or should I create a workaround?
          >
          > Here is my environment:
          >
          > WLS 6.1 on SUN running in developmentmode
          > two webapps, deployed as .war file and/or as .ear file
          > Cookie Name is configured to be identical in the two .war Files
          >
          > Regards,
          >
          > Ed

How to prevent session sharing ???

I am getting a problem when i access my application with different logins from same machine ( same browsers ) ,
then old login session is updating with new login session,
how can i prevent this session sharing?
thanks in advance

What's probably happening is that you use file cookies (cookies are stored in your file system).
1. You log in from browser 1 as User A. The server sets a session cookie on your file system.
2. You continue to work from browser 1. The session cookie gets sent in every request and all is fine.
3. Now you open another browser and log in as User B. The server sets a session cookie identifying you as User B on your file system.
4. This overwrites the cookie that was set earlier that identified you as User A The concept is that you can have only one cookie from a server for a specific purpose (session identification in this case)
5. When you go back to browser 1 now and access the site, the second cookie gets sent (the one that identifies you as User B) and you are logged in as User B now.
ram.

Session sharing again

Hi all,
A problem with a slight difference from the one just posted by vakkanti about http-session sharing.
In our servlet/JSP application the users can of course open a new window within their browser.
The problem is that both windows are now using the same HTTP-session because the other session has not yet been invalidated and that gives problems in the use of session variables etc.. How can I force that the the new window is using a new session? Or otherwise at least deal elegantly with this problem. It must be a well known problem I think.
Regards,
Ronald

Hello Ronald,
I do not thinnk that is a 'J2EE issue' in the sense this is the way browser reacts. When you open a new window you are in the same context in term of cookie, session, etc etc. All container will react the same way with a new opened window.
The only way that I now to have multiple windows and different sessions is:
- on Internet Explorer and with creatin a new process by running IE (Clicking or run command) not with the File>New window , or any links.
Could you explain why you need multiple session in different window? What is the businness requirement of your application? (we may be able to find a work around, since the behavior your expect is not supported by browsers)
Regards
Tugdual Grall

Portlet question- session.invalidate()- with weblogic

Guys:
Has anyone had a issue with session.invalidate() using weblogic 8.1.
we have vignette and weblogic 8.1.
the problem i have noticed is session.getId retunrns a extra timestamp string in the end. And i am thinking since this changes the entire sessionid, it does not get invalidated. I tried adjusting the weblogic.xml's idlength session-param to 52 but this still happens after that. can anyone suggest any insights. i am unable to kill the session and hence the user is always logged in. the only way is to close to broswer window.
session id:
F1z2YTQMyD3Yy1Xs4VBHyq3M7LWVfYMnvWJgYLnrR3cPYnKL9NW9!-682555724!1170191618061
any help will be appreciated..thanks.
Harsh

i havent gone to weblogic support yet. Want to check
if anyone of us might have seen a similar issue.I haven't used weblogic in a while. I doubt many people here have. I would suggest you ask on a weblogic forum. This is a java forum.

HTTP session sharing

Hi,
We have a need for session sharing among the different JVMs and have been trying the application cluster functionality with zero luck. Now we are thinking of looking into coherence because by reading the documentation we came to know this is something we could accomplish it. Since being a very new on this, have anyone done this and if you have can we get some information on how to do it. We will really appreciate your help on this.
Thanks,
Raj

To better understand the background of your root problem,
1) which Application Server product are you using?
2) the term "clustering" may mean different things to different App Server implementations. Does your reference to clustering also mean "Http Session Replication" has been specifically enabled, or that by simply clustering JVMs you expect this to happen automatically?
3) is access to the session needed by the same web app or different web apps in the JVMs?

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 sharing/reuse issues

Hi,
I have multiple application set-up using session sharing within the workspace.
Technically all works fine, however it does not play nice with user behaviour.
Example:
Users logs into APP_ID:100. Since he isn't authenticated yet, he provides user/pass and the APP_SESSION is authenticated.
Now if the user switches using to another application (using a link provided in application 100) he gets redirect to APP_ID:101:APP_SESSION all is fine.
The session is already authenticated, the application shares the session and the user gains access to app 101 without having to authenticate again.
All's fine!
However users don't behave they way. Instead of using an easy link in the application. They will use their own bookmark or type in the url for app 101 manually.
That way the next application is either called with f?p=101:1:[SOME OLD SESSIONID FROM BOOMARK] or f?p=101 (with no further page or session info)
In both cases instead of using the already authenticated session apex spawns a new session, which of course isn't authenticated yet thus forcing the user to authenticate and come complaining they have to login again.
Similar behaviour problems exists when the user opens a browser and tries to open both applications in each in a tab next to each other.
Both tabs fetch there own initial session id and start writing it to the same cookie each in turn invalidating the other tab's session.
These can lead to some fanatic ping pong actions. Thus it's impossible to open 2 applications sharing session in the same browser.
Is there any remedy for these situations?
Can apex be as smart as for instance first trying to resume the session stored in the cookie and only if that session is invalid, start a new session?
Thanx
apodictus

Hi,
I'll just try to answer one of your questions..
apodictus wrote:
Similar behaviour problems exists when the user opens a browser and tries to open both applications in each in a tab next to each other.
Both tabs fetch there own initial session id and start writing it to the same cookie each in turn invalidating the other tab's session.
These can lead to some fanatic ping pong actions. Thus it's impossible to open 2 applications sharing session in the same browser.
Is there any remedy for these situations?
Can apex be as smart as for instance first trying to resume the session stored in the cookie and only if that session is invalid, start a new session?The brilliant feature you want to get rid off is session sharing. Not the one you describe, but the one Microsoft implemented in IE7->
All developers have this kind of problem, so they naturally create a way to turn them off.
And when using ie you have two command line switches..
iexplore.exe -noframemerging
iexplore.exe -nomergehttp://msdn.microsoft.com/en-us/library/ee330728%28VS.85%29.aspx
I'm sure that Firefox and Chrome have a simelar set of switches/hidden settings...
or just use private browsing...
/kenny

Deploying session beans with weblogic 5.1 in NT

Hello ,
I have a problem with deploying session beans in weblogic 5.0. I have
written the code and compiled it. My Compilation is fine. Cud any one give
me a step by step of how I should deploy my bean with weblogic 5.0 on
windows NT.
Raj Urs

Hello ,
I have a problem with deploying session beans in weblogic 5.0. I have
written the code and compiled it. My Compilation is fine. Cud any one give
me a step by step of how I should deploy my bean with weblogic 5.0 on
windows NT.
Raj Urs

How to deploy a session bean in Weblogic 9.2

Hi,
Can anyone please point me to the procedure of deploying session bean on weblogic 9.2. My operating system is Fedora 5. Please let me know the steps as i am very new to EJB.
Regards,
Sanjeev

I looked for this information in ServletConfig, in ServletContext, in JVMID
ServletConfig or ServletContext do not have anything (at least I do not see anything),
The newsgroups recommend the following code
public static String getLocalUrlString()
String urlString;
JVMID jvmid = JVMID.localID();
urlString = jvmid.getHostAddress();
weblogic.rjvm.Protocol proto
=weblogic.rjvm.Protocol.getDefaultProtocol();
int port = jvmid.getPort(proto);
return urlString + ISoapConstants.SCHEME_DELIMITER + port;
I also tried
weblogic.rjvm.Protocol does not exist in current version, and I did not get any real information inside JVMID
Also tried JVMID.localID().ports(), which returns null
System.getProperty("weblogic.system.bindAddr"); or weblogic.system.listenPort property,
getProperty returns null
Tried also another approach from the newsgroups - JwsContext.
/** @common:context */
JwsContext context;
String myPort = context.getService().getURL().getPort();
String myUrl = context.getService().getURL().toString();
context is null
None of them worked.
Do you have any other ideas?
All those ideas I found in the newsgroups were to the previos version(s) of weblogic - up to 8.1. I have not found anything specific to 9.2

Session sharing in weblogic 7.0

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