Rejoining a cluster in WebLogic 5.1

          Sorry, I haven't had a chance to test this out, so here is a dumb
          question - once a server goes down in a cluster, I know the failure
          is detected by the peers and the server list is modified accordingly
          but what happens when the failed server comes back up and WebLogic
          is started again? Can it successfully join the already up and running
          cluster?
          Thanks
          Satish

          Yes
          "Satish Nallur" <[email protected]> wrote:
          >
          >Sorry, I haven't had a chance to test this out, so here
          >is a dumb
          >question - once a server goes down in a cluster, I know
          >the failure
          >is detected by the peers and the server list is modified
          >accordingly
          >but what happens when the failed server comes back up
          >and WebLogic
          >is started again? Can it successfully join the already
          >up and running
          >cluster?
          >
          >Thanks
          >Satish

Similar Messages

Bi publisher cluster on weblogic 10.3

I'm trying to setup a BI publisher cluster on weblogic server. I managed to do it on on one physical machine. I deployed war application as an exploded archive and selected "I will make the deployment accessible from the following location C:\apps\xmlpsever.war", and in xmlp-server-config.xml I setup repository as "C:\apps\xmlpsever.war\home\repository\XMLP", and everything works fine.
When I try to do same thing, just that my weblogic machines are different physycal machines I have a problem. If I deploy an application in a war package it doesn't work, and if i deploy it as an exploded archive (like said in Bi publisher Installation Guide) it copies the application to all physical machines but application doesn't deploy well because of BI publisher repository path. I tried to put a repository in one folder, share that folder and then map it to X: on every machine, it doesn't help.
Thank you for any help regarding how to configure publisher repository, XMLDB or any solution?

your cluster is unicast or multicast? if you are using unicast, I would suggest switching to multicast and see if the problem still occurs.
keep us posted.

Round Robin was not happening for my cluster with WebLogic Proxy Plugin

          Hi,
          I configured my cluster with software load balancer, HTTPClusterServlet. By default,
          it is load balancing with Round Robin Algorithm. That means one HTTP request
          goes to server1, and the other HTTP request goes to server2. However, it is not
          what I can see no matter for the requests in one HTTP session or not.
          Say I open two browser, and log into my application with two different users,
          one is "cyang", the other is "xpression". Then the HTTP request (for servlet/jsp)
          from two browsers always go to the same server1, server2 is not invoked at all.
          I did see one time, with only one session (one browser with "xPression" user log
          in), the most requests go to server1, suddenly I am brough into log in page, then
          I noticed that the request for "xPression" moved to server2 although server1 is
          still alive. Therefore, at most, I can say it is "Random", rather than "Round
          Robin".
          What is the real meaning for HTTP servlet/jsp load balancing algorithm? Does
          Round Robin mean request go to each server in turns? Does it have to be different
          session or it can be within one session?


It should be sticky. If not, then bug / config error.
          Peace,
          Cameron Purdy
          Tangosol, Inc.
          http://www.tangosol.com/coherence.jsp
          Tangosol Coherence: Clustered Replicated Cache for Weblogic
          "Carole Yang" <[email protected]> wrote in message
          news:[email protected]...
          >
          > Thanks. Yeh, with two kind of browsers, I do see the request goes to
          different
          > servers.
          >
          > That goes back to the original question. Does "Round Robin" here fall
          into the
          > scope of a HTTP session. However, that is not always true for my tests.
          Sometimes,
          > HTTP request just randomly goes to another server while in the same HTTP
          session.
          > It is not sticky to one particular server during one session.
          >
          >
          >
          > --Carole
          >
          >
          > "Cameron Purdy" <[email protected]> wrote:
          > >Has to be different sessions to go to different machines.
          > >
          > >Best way to test is to run one session in IE and the other in Mozilla
          > >or
          > >Netscape.
          > >
          > >Peace,
          > >
          > >Cameron Purdy
          > >Tangosol, Inc.
          > >http://www.tangosol.com/coherence.jsp
          > >Tangosol Coherence: Clustered Replicated Cache for Weblogic
          > >
          > >
          > >"Carole Yang" <[email protected]> wrote in message
          > >news:[email protected]...
          > >>
          > >> Hi,
          > >>
          > >> I configured my cluster with software load balancer,
          HTTPClusterServlet.
          > >By default,
          > >> it is load balancing with Round Robin Algorithm. That means one HTTP
          > >request
          > >> goes to server1, and the other HTTP request goes to server2. However,
          > >it
          > >is not
          > >> what I can see no matter for the requests in one HTTP session or not.
          > >>
          > >> Say I open two browser, and log into my application with two different
          > >users,
          > >> one is "cyang", the other is "xpression". Then the HTTP request (for
          > >servlet/jsp)
          > >> from two browsers always go to the same server1, server2 is not invoked
          > >at
          > >all.
          > >>
          > >> I did see one time, with only one session (one browser with "xPression"
          > >user log
          > >> in), the most requests go to server1, suddenly I am brough into log
          > >in
          > >page, then
          > >> I noticed that the request for "xPression" moved to server2 although
          > >server1 is
          > >> still alive. Therefore, at most, I can say it is "Random", rather
          > >than
          > >"Round
          > >> Robin".
          > >>
          > >> What is the real meaning for HTTP servlet/jsp load balancing algorithm?
          > >Does
          > >> Round Robin mean request go to each server in turns? Does it have
          > >to be
          > >different
          > >> session or it can be within one session?
          > >
          > >
          >

OS/hw based failover cluster for WebLogic Server 9.2 Standard Edition

Hi
Is it possible to run WebLogic Server 9.2 SE on OS/hardware based cluster?
I want to get an simple failover environment on a cluster of 2 nodes (active-passive).
Oracle Database can be run in such scenario with one license with a limit of up time for passive instance.
Is it the same with WLS licences?
Regards
WD

The problem doesn't look like it has anything to do with wappers per se. The stack indicates that the JVM died when the persistent store tried to invoke a standard Java synchronize operation. JVM crashes need to be analyzed by a JVM expert, so I second the suggestion to solicit help from JVM experts and/or filing a case with customer support. In the mean-time, you can probably work-around the issue by either (A) ensuring you have a recent version of the JVM installed, or (B) temporarily switching to the Sun JVM.
Regards,
tom
Edited by: TomB on Sep 17, 2010 2:33 PM

JMSClientExceptions:055053 -WebLogic10 Cluster - Remote WebLogic JMS - Help

All,
We are using a foreign JMS provider from WeLogic 10 cluster to connect to the Remote WebLogic JMS Server. We are getting below error while posting the data to the queue. Any help , ideas as to why this is occuring please?
/ Error
Error during connection/session creation:weblogic.jms.common.JMSException: [*JMSClientExceptions:055053*]Error creating connection to the server: java.rmi.UnmarshalException: failed to unmarshal class weblogic.jms.client.JMSConnection; nested exception is: java.io.StreamCorruptedException|portal
Thanks a lot for your help.

All
The issue popped up gain. Below is the full stack trace. I confirmed that we are using the t3 URL to connect to remote JMS server (which is Weblogic 10 /JMS). Appreciate any insights help to resolve this issue.
// Stack Trace
weblogic.jms.common.JMSException: [JMSClientExceptions:055053]Error creating connection to the server: java.rmi.UnmarshalException:
failed to unmarshal class weblogic.jms.client.JMSConnection; nested exception is:
java.io.StreamCorruptedException
at weblogic.jms.client.JMSConnectionFactory.setupJMSConnection(JMSConnectionFactory.java:253)
at weblogic.jms.client.JMSConnectionFactory.createConnectionInternal(JMSConnectionFactory.java:285)
at weblogic.jms.client.JMSConnectionFactory.createQueueConnection(JMSConnectionFactory.java:165)
at com.juniper.core.mdb.MessageSender.initSession(MessageSender.java:79)
at com.juniper.core.mdb.MessageSender.<init>(MessageSender.java:64)
at com.juniper.core.mdb.MDBHelper.processMessage(MDBHelper.java:98)
at com.juniper.core.mdb.BaseMDB.onMessage(BaseMDB.java:35)
at weblogic.ejb.container.internal.MDListener.execute(MDListener.java:466)
at weblogic.ejb.container.internal.MDListener.transactionalOnMessage(MDListener.java:371)
at weblogic.ejb.container.internal.MDListener.onMessage(MDListener.java:327)
at weblogic.jms.client.JMSSession.onMessage(JMSSession.java:4072)
at weblogic.jms.client.JMSSession.execute(JMSSession.java:3964)
at weblogic.jms.client.JMSSession$UseForRunnable.run(JMSSession.java:4490)
at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:464)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:200)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:172)
Caused by: java.rmi.UnmarshalException: failed to unmarshal class weblogic.jms.client.JMSConnection; nested exception is:
java.io.StreamCorruptedException
at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:229)
at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:338)
at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:252)
at weblogic.jms.frontend.FEConnectionFactoryImpl_1001_WLStub.connectionCreate(Unknown Source)
at weblogic.jms.client.JMSConnectionFactory.setupJMSConnection(JMSConnectionFactory.java:244)
... 15 more
Caused by: java.io.StreamCorruptedException
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1332)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
at weblogic.utils.io.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:195)
at weblogic.rjvm.MsgAbbrevInputStream.readObject(MsgAbbrevInputStream.java:565)
at weblogic.utils.io.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:191)
at weblogic.rmi.internal.ObjectIO.readObject(ObjectIO.java:62)
at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:227)
... 19 more
Thanks
Edited by: user3285437 on May 4, 2009 9:26 AM

Error when setting up cluster in weblogic 10.3.6

Hi All,
We are trying to set up a cluster with 2 managed servers in WLS 10.3.6. The issue is that we do not manage to deploy our application on the managed server as when we start the managed servesr we have the following error message :
javax.naming.NameNotFoundException: While trying to lookup 'ouaf.servicebean' didn't find subcontext 'ouaf'. Resolved '' [Root exception is javax.naming.NameNotFoundException: While trying to lookup 'ouaf.servicebean' didn't find subcontext 'ouaf'. Resolved '']; remaining name 'ouaf/servicebean'
Unfotunately, we are failing to resolve this issue. Any help would be greatly appreciated !!!
Many thanks.

HI,
Just try to clear tmp and cache once a see if you still face same problem.
If not please put the complete error stack to verify what exactly going on there.
Regards,
Kal

Cluster License weblogic 10

Do I need a cluster license if I'm runnning a cluster for testing and evaluation purpose?

Kai Niklas wrote:
          > Do I need a cluster license if I'm runnning a cluster for testing and evaluation purpose?
          You don't need any special cluster license. You can use default one.
          Remember only about 5 connections limitation per single server.
          Best Regards,
          Karol Muszynski

Weblogic - Fusion Middleware Cluster - Clarification - 11g

Hello All,
I've checked the forum and would need just a little clarification regarding weblogic cluster & fusion Middleware + Load Balancing.
My current Setup is:
==============
1 APP Server: Runs Fusion Middleware 11g Forms and Reports + Weblogic + OHS (windows 2008R2)
1 DB Server: Standalone database 11gR2 installation (windows 2008R2)
I've been asked to add a new app server and setup load balancing between the two app servers in order to split the incoming forms & reports requests.
What do I do? Do I install the new app server like the first one and just add it to an existing domain(clustering)? Is there a difference between fusion middleware clustering and weblogic clustering (as in database RAC - the whole idea being failover 24/7 no single point of failure?)
I would appreciate any assistance, and need not great detail, just need to make sense of the whole thing.
I'm already on with the following document: [http://docs.oracle.com/cd/E21764_01/web.1111/e13709/toc.htm]
Thanks in advance
Jan S.

Hi Jan
You are almost there. I would like to clarify some points for you.
1. You already have WLS + Forms/Reports and of course Backend RCU Database that has all the meta data for Forms/Reports. This RCU database is on single server Oracle database.
I've been asked to add a new app server and setup load balancing between the two app servers in order to split the incoming forms & reports requests.
2. The first question for above requirement is, do you need the new Server on the same Existing physical box or a different remote physical box. If on the same physical box (which I doubt), then there is NO need to install any new software like WLS, Forms/Reports etc. All you do is create a new Managed Server and add it to your existing Domain. NOW, do you currently have a Clustered Domain. If you, all you do is add this new server to that cluster. If not, then you need to add a New cluster and add your old and this NEW managed server to that Cluster. If your existing domain is only single server and is very recent, I would prefer create a brand new Cluster domain with Different Port numbers (you can change port numbers anytime later also). Then add/create one or two managed servers.
3. If you are give a new physical box for this new managed server, then YES, you do need to install exactly SAME version of Weblogic Server and same version of Forms/Reports server on this new machine. Then create a Cluster Domain with 2 managed servers. One managed server on first box where you will have Admin Server + Managed Server 1. Then run pack command. Go to other machine. Run unpack command to create second Managed Server. Now you got 2 managed servers in a Single Clustered Domain.
4. Now comes the Load Balancing Part. Never ever expose the individual managed server host and port and WebApp urls for any Clustered Domain. Instead install Apache Http Web App Server which I guess is same as Oracle Http Server. Oracle renamed it (there is no need for this, but it may be company policy). Anyhow all you do is, just install Apache Web Server. Copy some .dll (.so on linux) files to this apache installation. Then update httpd.conf file or weblogic.conf file with details of clustered weblogic domain managed servers host, port, url patterns etc.
5. All the External Requests will now go to Apache Web Server like http://apachehost:apacheport/xxxUrl. This Apache will take care of LOAD Balancing, Failover etc and based on input url pattern will redirect requests to back end cluster of weblogic managed servers.
6. The backend RCU database that has Metadata for Forms/Reports NEED NOT be Clustered. If you really have extremely heavy data, then you can have Oracle RAC database. Have multiple DB Nodes in RAC. For each Node, create a DataSource in Weblogic conolse and finally one master Multi Data Soiurce that uses all these single Datasources. But very rarely you really need RAC or clustered database for RCU. So for now, just go with single non-clustered Database that has RCU Schemas.
In conclusion, even though you have Forms/Reports, just follow the standard normal Weblogic Clustered domain Architecture for your requirement. All clustering is at application server level and nothing to do with any Oracles softwares like SOA/BPM, Forms/Report, BI etc etc.
Thanks
Ravi Jegga

Multiple open db connections in a weblogic cluster

we have created a cluster in weblogic with oracle database.
Whenever we are starting the cluster (managed servers), there are a lot of connections are opening in database (around 150 in database). Although we have set max capacity of cgDataSource, cgDataSourcenoXA and wlsjmsreportDS as 20. So ideally there should not be more than 60 connections open at any point of time.
We are using OSB 10gR3 in Linux 64 bit platform.

The max capacity for a data source is per node in the cluster (if it's targeted to the cluster).
So if you have 3 data sources, with max capacity of 20 each and two nodes in your cluster you should have around 3*20*2 = 120 connections.
Of course at startup WebLogic only creates the number of connections specified in the initial capacity.

Storage 7310:Cluster Remote Appliance loops during rejoin

Hello,
I performed a takeover on controller A, assigned all resources to that node, then I unconfigured the cluster. Now controller B is trying to rejoin the cluster but fails:
    Sun Storage 7310 Configuration
    Copyright 2009 Sun Microsystems, Inc. All rights reserved.
    NET-0 <=> NET-1 <=> NET-2 <=> NET-3 <=>
    140 error(s) have occurred during cluster rejoin.
    The most recent error was: 'CIO channel not connected'.
    Cluster rejoin will be retried until successful.
    Joining cluster ... /
    ESC-3: Halt   ESC-4: Reboot   ESC-5: Info
    For help, see http://www.sun.com/7310/rebuilding the cluster from controller A does not work in this state:
error: The remote appliance has already been configured. If you wish to
       configure it as part of a cluster, perform a factory reset on it and
       repeat this step.So how to reset controller B? There seems to be no way to perform this task from the screen I posted above.

Problem solved: the kernel boot parameter "-c" does a factory reset during boot.

Weblogic production cluster: how to configure it for ADF, ADF Faces, BC?

Given a production ready cluster of Weblogic 10.2. What should I do to convert it an ADF ready weblogic server ? How to make it as usable for ADF as the integrated weblogic in jdeveloper?
any official guide from Oracle ?
thanks,
fabio

For WLS 11g (aka 10.3.x) you must install the Application Development Runtime (get it from here http://www.oracle.com/technology/software/products/middleware/htdocs/fmw_11_download.html) and extend your existing domains.
Check the Installation Guides first: http://download.oracle.com/docs/cd/E14571_01/install.htm
--olaf

Weblogic JMS Cluster

Hi,
          I have a 6.1 cluster that has a JMS server A and a JMS Server B
          deployed and running on each of the managed nodes. As destination I
          created a topic with the same name for each JMS Server. The connection
          factories I deployed to the cluster only.
          My problem is, when I start the second managed server, I get the
          following error:
          <Error> <Cluster> <Conflict start: You tried to bind an object under
          the name
          com.csg.pb.tit.tms.TMSSignalTopic in the JNDI tree. The object you
          have bound
          from 169.59.5.26 is non clusterable and you have tried to bind more
          than once
          from two or more servers. Such objects can only deployed from one
          server.>
          When I understand correctly, this happens because the JNDI tree gets
          distributed to all nodes of the cluster, so there would be two object
          with the same name. How do I solve this situation? Do I have the
          specify different names for topics in different JMSServer running in a
          cluster? How would the load balancing work?
          Please help. Thanks in advance
          Juerg


Tom,
          Thanks for your help so far, I installed the patch and got things
          working. However I still have some open points where you might be able
          to help.
          Let's assume I don't have these smart forwarders and I have four
          topics per JMSServer deployed to two managed nodes. Connection
          factories deployed to the cluster. When I connect N publishers
          through the cluster, messages from one publisher end up in the
          appropriate topic on nodeA, messages from another publisher end up in
          the appropriate topic on nodeB. Now when I connect a durable
          subscriber via the cluster I only get messages from topics from one of
          the managed nodes, right? (This is exactly what I am seeing in my
          tests) Connecting durable subscribers to each managed node is not
          possible because of JNDI (throws exception like
          InstanceAlreadyExists). How would I connect a subscriber so that it
          subscribes to the right topics on the right node ( one the works with
          the previously described publisher)?
          All this leads me to the conclusion, that without the forwarders, a
          JMS cluster with Weblogic 6.1 is not so powerful, it basically does
          just load balacing.
          Is this correct or am I missing something important here?
          Thanks a lot and have a nice weekend
          Juerg
          Tom Barnes <[email protected]> wrote in message news:<[email protected]>...
          > Juerg Staub wrote:
          > > Tom,
          > >
          > > Thanks a lot. Bascially I did everything right, just need the patch.
          > >
          > > In the other hand I'd like to know what the benefits of the smart
          > > forwarders would be. When I understand correctly, every message would
          > > be forwarded to the appropriate topic in the different JMS servers.
          > > What would that bring in the case of a failure(one node of a cluster
          > > goes down)? As far as I can see, I still would need to 're-establish'
          > > the connection factory, topic session, topic and publisher in order to
          > > publish messages again?
          > >
          >
          > Yep. I think we are on the same page:
          >
          > The "smart-forwarders" would do what the 7.0 distributed topic
          > forwarders do for you. They would forward messages bound to
          > a particular physical topic to all instances of the topic.
          > This can be implemented via a durable subscription on a
          > member topic by each remote member topic's host.
          > MDBs could be used to service the durable subscription,
          > as they already have the reconnect logic built in.
          > (Durable subscriptions are used if you wish to guard against
          > lost messages). The forwarders
          > need to change a property on the message to indicate
          > that the message is already forwarded, and forward
          > only messages that have'nt been forwarded (to prevent
          > endless loops!).
          >
          >
          > > Thanks
          > >
          > > Juerg
          > >
          > > Tom Barnes <[email protected]> wrote in message news:<[email protected]>...
          > >
          > >>I suggest you read the "emulating 7.0 distributed destinations"
          > >>section of the JMS performance white-paper available on dev2dev.bea.com.
          > >>You will need to apply the referenced enhancement patch on top of SP3 to
          > >>disable JNDI replication (or update to 6.1SP4).
          > >>
          > >>If you need to create a true distributed topic, you will also need to
          > >>write your own "smart-forwarders" to forward messages
          > >>between the different physical instances of the topic. Or simply
          > >>use WL JMS 7.0 (the upgrade from 6.1 is straight-forward).
          > >>
          > >>Tom
          > >>
          > >>Juerg Staub wrote:
          > >>
          > >>>Hi,
          > >>>
          > >>>I have a 6.1 cluster that has a JMS server A and a JMS Server B
          > >>>deployed and running on each of the managed nodes. As destination I
          > >>>created a topic with the same name for each JMS Server. The connection
          > >>>factories I deployed to the cluster only.
          > >>>
          > >>>My problem is, when I start the second managed server, I get the
          > >>>following error:
          > >>>
          > >>><Error> <Cluster> <Conflict start: You tried to bind an object under
          > >>>the name
          > >>>com.csg.pb.tit.tms.TMSSignalTopic in the JNDI tree. The object you
          > >>>have bound
          > >>>from 169.59.5.26 is non clusterable and you have tried to bind more
          > >>>than once
          > >>>from two or more servers. Such objects can only deployed from one
          > >>>server.>
          > >>>
          > >>>
          > >>>When I understand correctly, this happens because the JNDI tree gets
          > >>>distributed to all nodes of the cluster, so there would be two object
          > >>>with the same name. How do I solve this situation? Do I have the
          > >>>specify different names for topics in different JMSServer running in a
          > >>>cluster? How would the load balancing work?
          > >>>
          > >>>
          > >>>Please help. Thanks in advance
          > >>>
          > >>>Juerg
          > >>

Configure Weblogic Cluster.

Hi All,
I am new to this clustered envrionment.. It would be great if you can give me few pointers, how to configure a cluster on weblogic 8.1.
thanks
SJ

http://e-docs.bea.com/wls/docs81/cluster/

Questions on Weblogic RMI

Hi
          I've a few questions on WL RMI that I couldn't figure out from the
          documentation.
          Suppose I have a cluster containing Weblogic servers server1 and server2.
          Server1 hosts an RMI object o1 that is bind to the cluster wide JNDI tree.
          O1 implements remote interface i1 that has a method m1 which takes as an
          argument an object o2 implementing remote interface i2. That is:
          public class o1 implements i1 {...}
          public interface i1 extends weblogic.rmi.Remote {
          public void m1 (i2 _o2);
          public class o2 implements i2 {...}
          public interface i2 extends weblogic.rmi.Remote {...}
          Now if inside server2 I create o2 using the default constructor, lookup a
          reference to o1 and call method m1, will o2 get passed by value or by
          reference? Is there any way to control this? What if I don't use the
          constructor to create the object but the object is hosted in server2 and I
          get a reference to the object using JNDI lookup? In short, how does WL RMI
          decide when to pass an object by reference and when by value.
          I'm trying to increase the scalability of a system by distributing its
          modules as RMI objects to several machines running Weblogic server, and I
          need to know the details on how WL RMI works. The documentation seems to be
          rather inadequate...
          Thanks for reading this far :)
          - Juha


Actually, O2 will always be passed by reference because it is an RMI object
          (i.e., it implements weblogic.rmi.Remote). If O2 were a non-RMI object, it would
          be passed by value if O1 is in a different process and by reference if O1 and O2
          are in the same process.
          Edwin Marcial wrote:
          > My 2 cents on this:
          >
          > I believe in this case, since O2 is a remote object, it will get passed by
          > reference. If it were not a remote object, it would be passed by value.
          >
          > Edwin
          >
          > "Juha Lindström" wrote:
          >
          > > Hi
          > >
          > > I've a few questions on WL RMI that I couldn't figure out from the
          > > documentation.
          > > Suppose I have a cluster containing Weblogic servers server1 and server2.
          > > Server1 hosts an RMI object o1 that is bind to the cluster wide JNDI tree.
          > > O1 implements remote interface i1 that has a method m1 which takes as an
          > > argument an object o2 implementing remote interface i2. That is:
          > >
          > > public class o1 implements i1 {...}
          > >
          > > public interface i1 extends weblogic.rmi.Remote {
          > > public void m1 (i2 _o2);
          > > }
          > >
          > > public class o2 implements i2 {...}
          > >
          > > public interface i2 extends weblogic.rmi.Remote {...}
          > >
          > > Now if inside server2 I create o2 using the default constructor, lookup a
          > > reference to o1 and call method m1, will o2 get passed by value or by
          > > reference? Is there any way to control this? What if I don't use the
          > > constructor to create the object but the object is hosted in server2 and I
          > > get a reference to the object using JNDI lookup? In short, how does WL RMI
          > > decide when to pass an object by reference and when by value.
          > >
          > > I'm trying to increase the scalability of a system by distributing its
          > > modules as RMI objects to several machines running Weblogic server, and I
          > > need to know the details on how WL RMI works. The documentation seems to be
          > > rather inadequate...
          > >
          > > Thanks for reading this far :)
          > >
          > > - Juha

Deploying a Web Application in a Cluster

When accessing our web app through a cluster, the weblogic servers fail to recognize the servlets as registered in the web.xml file, but recognize them fine when registered in the cluster's weblogic.properties file. We had previously tested the app in a non-clustered enviroment and everything worked fine from the web.xml file. So... does anyone have any experience with this problem, or does anyone have any suggestions. All help is appreciated.Thanks,Chad


Chad Griffith wrote:
          > When accessing our web app through a cluster, the weblogic servers fail to recognize the servlets as registered in the web.xml file, but recognize them fine when registered in the cluster's weblogic.properties file.
          I am not quite sure I understand. Could you elaborate what you mean here?
          - Prasad
          > We had previously tested the app in a non-clustered enviroment and everything worked fine from the web.xml file. So... does anyone have any experience with this problem, or does anyone have any suggestions. All help is appreciated.Thanks,Chad
          Cheers
          - Prasad

Rejoining a cluster in WebLogic 5.1

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