Weblogic Cluster with i686 and Itanium

Hello,
I want to configure a Bea Weblogic 8.1 Cluster including an itanium and a i686
server.
I have sucessfully configured a weblogic cluter with 2 Sun servers.
Now I want to use for my weblogic cluster an itanium server together with an Intel
i686 server both running on linux with jrockit as jvm.
Is it possible to do this with two different hardware platforms to use a Weblogic
Cluster?
Michael

Similar Messages

Weblogic Cluster with different hardware

Hello,
I want to configure a Bea Weblogic 8.1 Cluster including an itanium and an i686
server.
I have sucessfully configured a weblogic cluter with 2 Sun servers.
Now I want to use for my weblogic cluster an itanium server together with an Intel
i686 server both running on linux with jrockit as jvm.
Is it possible to do this with different hardware platforms to use in a Weblogic
Cluster?
I know that I have to use the same servicepack of WLserver and the same java machine.
On the itanium system i use Redhat AS and on the i686 system i use redhat es
Michael

Yes, this is fine. The only thing you need to watch for is that the system with the least resource is capable of taking over the workload of the system with the larger resources. This will often just be a matter of application configuration or tuning.
Tim
---

Having issue with start weblogic cluster with tangosol cluster

Hi,
Oracle Coherence Version 3.3.1/389p1
Grid Edition: Development mode
We are using Weblogic 8.1.5 with Tangosol 3.3.1 on Linux servers.
And we added the initializing logic in the servlet's init() method to get all NamedCaches and put into the ServletContext.
When we start weblogic cluster, the first weblogic member will startup successfully with following messages :
<Nov 7, 2007 10:12:30 AM EST> <Info> <HTTP> <BEA-101047> <[2007-11-07 10ServletContext(id=259640596,name=clusterqa,context-path=)] initObjects: init>:12:31.565 Oracle Coherence 3.3.1/389p1 <Info> (thread=Main Thread, member=n/a): Loaded operational configuration from resource "zip:/home/server/clusterqa/wls81/DOCVIEW/docqa1/.wlnotdelete/extract/docqa1_DOC_clusterqa/jarfiles/WEB-INF/lib/coherence.jar!/tangosol-coherence.xml"
2007-11-07 10:12:31.598 Oracle Coherence 3.3.1/389p1 <Info> (thread=Main Thread, member=n/a): Loaded operational overrides from file "/home/www/WEB-INF/lib/tangosol-coherence-override.xml"
Oracle Coherence Version 3.3.1/389p1
Grid Edition: Development mode
Copyright (c) 2000-2007 Oracle. All rights reserved.
2007-11-07 10:12:31.938 Oracle Coherence GE 3.3.1/389p1 <Info> (thread=Main Thread, member=n/a): Loaded cache configuration from file "/home/www/WEB-INF/lib/pub-search-cache-config.xml"
2007-11-07 10:12:31.983 Oracle Coherence GE 3.3.1/389p1 <Info> (thread=Main Thread, member=n/a): sun.misc.AtomicLong is not supported on this JVM; using a synchronized counter. Though safe to ignore, you may upgrade to BEA's 1.5 JVM to fix this issue.
2007-11-07 10:12:33.267 Oracle Coherence GE 3.3.1/389p1 <Warning> (thread=Main Thread, member=n/a): UnicastUdpSocket failed to set receive buffer size to 1428 packets (2096304 bytes); actual size is 89 packets (131071 bytes). Consult your OS documentation regarding increasing the maximum socket buffer size. Proceeding with the actual value may cause sub-optimal performance.
2007-11-07 10:12:34.118 Oracle Coherence GE 3.3.1/389p1 <D5> (thread=Cluster, member=n/a): Service Cluster joined the cluster with senior service member n/a
2007-11-07 10:12:37.508 Oracle Coherence GE 3.3.1/389p1 <Info> (thread=Cluster, member=n/a): Created a new cluster with Member(Id=1, Timestamp=2007-11-07 10:12:33.323, Address=10.5.176.86:8088, MachineId=48982, Edition=Grid Edition, Mode=Development, CpuCount=4, SocketCount=2) UID=0x0A05B056000001161AAB782BBF561F98
2007-11-07 10:12:37.736 Oracle Coherence GE 3.3.1/389p1 <D5> (thread=Invocation:Management, member=1): Service Management joined the cluster with senior service member 1
2007-11-07 10:12:38.168 Oracle Coherence GE 3.3.1/389p1 <D5> (thread=DistributedCache, member=1): Service DistributedCache joined the cluster with senior service member 1
<Nov 7, 2007 10:12:38 AM EST> <Info> <HTTP> <BEA-101047> <[ServletContext(id=259640596,name=clusterqa,context-path=)] xslProcessor: init>
But trying to start the second weblogic member server, the startup process is stucked after tangosol cache initialization and the second weblogic member server never up running. Please see following messages :
<Nov 7, 2007 9:49:38 AM EST> <Info> <HTTP> <BEA-101047> <[ServletContext(id=153019550,name=clusterqa,context-path=)] initDSNames: init>
<Nov 7, 2007 9:49:42 AM EST> <Info> <HTTP> <BEA-101047> <[ServletContext(id=153019550,name=clusterqa,context-path=)] initObjects: init>
2007-11-07 09:49:43.156 Oracle Coherence 3.3.1/389p1 <Info> (thread=Main Thread, member=n/a): Loaded operational configuration from resource "zip:/home/server/clusterqa/wls81/DOCVIEW/docqa2/.wlnotdelete/extract/docqa2_DOC_clusterqa/jarfiles/WEB-INF/lib/coherence.jar!/tangosol-coherence.xml"
2007-11-07 09:49:43.188 Oracle Coherence 3.3.1/389p1 <Info> (thread=Main Thread, member=n/a): Loaded operational overrides from file "/home/www/WEB-INF/lib/tangosol-coherence-override.xml"
Oracle Coherence Version 3.3.1/389p1
Grid Edition: Development mode
Copyright (c) 2000-2007 Oracle. All rights reserved.
2007-11-07 09:49:43.528 Oracle Coherence GE 3.3.1/389p1 <Info> (thread=Main Thread, member=n/a): Loaded cache configuration from file "/home/www/WEB-INF/lib/pub-search-cache-config.xml"
2007-11-07 09:49:43.571 Oracle Coherence GE 3.3.1/389p1 <Info> (thread=Main Thread, member=n/a): sun.misc.AtomicLong is not supported on this JVM; using a synchronized counter. Though safe to ignore, you may upgrade to BEA's 1.5 JVM to fix this issue.
2007-11-07 09:49:44.829 Oracle Coherence GE 3.3.1/389p1 <Warning> (thread=Main Thread, member=n/a): UnicastUdpSocket failed to set receive buffer size to 1428 packets (2096304 bytes); actual size is 89 packets (131071 bytes). Consult your OS documentation regarding increasing the maximum socket buffer size. Proceeding with the actual value may cause sub-optimal performance.
2007-11-07 09:49:45.419 Oracle Coherence GE 3.3.1/389p1 <D5> (thread=Cluster, member=n/a): Service Cluster joined the cluster with senior service member n/a
2007-11-07 09:49:45.555 Oracle Coherence GE 3.3.1/389p1 <Info> (thread=Cluster, member=n/a): Failed to satisfy the variance: allowed=16, actual=47
2007-11-07 09:49:45.555 Oracle Coherence GE 3.3.1/389p1 <Info> (thread=Cluster, member=n/a): Increasing allowable variance to 19
2007-11-07 09:49:46.040 Oracle Coherence GE 3.3.1/389p1 <Info> (thread=Cluster, member=n/a): This Member(Id=2, Timestamp=2007-11-07 09:49:45.69, Address=10.5.176.85:8088, MachineId=48981, Edition=Grid Edition, Mode=Development, CpuCount=4, SocketCount=2) joined cluster with senior Member(Id=1, Timestamp=2007-11-07 09:45:10.205, Address=10.5.176.86:8088, MachineId=48982, Edition=Grid Edition, Mode=Development, CpuCount=4, SocketCount=2)
Could you please explain why it happens, and what should I do to resolve this issues ?
Many Thanks,
Bing

Hi, Gene
Thank you for the response. I will send you our full log files and thread dumps.
I just want to give you more details about our cases :
1. This only happened without starting cache servers (com.tangosol.net.DefaultCacheServer).
2. And our application which are running on weblogic cluster will just call "CacheFactory.getCache("XXX")", and running as the Tangosol DataClient.
3. All weblogic member servers will be up running successfully if our cache servers are up running.
Also I tried to test another case :
Suppose all weblogic instances and cache server instances are up running. Now I trying to restart (kill weblogic instance process and restart) one of the weblogic member, It will up running successfully only if add some sleep times after killing weblogic processes and restarting it. Looks like tangosol cluster need certain time to aware the member has left cluster, then the restart process will be successful.
Questions :
1. Should we start our weblogic cluster only after cache server cluster is up running ?
2. How do we decide how many time we should wait before start new process to join the cache cluster ?
Could you please help to explain this one for me and let us if there anyway we can do to avoid the problem.
Many Thanks !!!
Bing

Oracle Clustre, Oracle Cluster with RAC and Oracle 10g

Is there a difference between Oracle Cluster and Oracle Cluster with RAC? Please explain. Do existing database codes run unmodified in Cluster or Cluster with RAC environment? What needs to be modified to make existing SQL codes RAC-aware. How to achieve 'all automatic' in case of failure and resubmission of Queries from failed instance to a running instance?
In 10g environment, do we need to consider licensing of RAC as a separate product? What are additional features one derives in 10g that is not in Cluster +RAC?
Your comments and pointers to comparison study and pictorial clarification will be very helpful.

Oracle cluster like failsafe before or Veritas Cluster or other vendor's cluster is meant for HA (high availability) purpose. Which 2 nodes or more can see a shared disk with 1 active node. Whenever this active node failed through heartbeat other machine will know and will take the database over from there.
Oracle RAC is more for HA and load balance. In Oracle RAC 2 or more nodes are accessing the database at the same time so it spread load across all these nodes.
I believe Oracle 10g RAC still need seperate license for it. But you need to call Oracle or check the production document to verify it.
Oracle 10g besides improvement in RAC. It's main improvement is on the build in management of the database itself. It can monitored and selftune itself to much furthur level then before and give DBA much more information to determine the cause of the problem as well. Plus improvement on lots of utility as well like RMAN , data pump etc... I don't want to get into too much detail on this you can check on their 10g new features for more detail view.
Hope this help. :)

How to create an intensity waveform graph cluster with t_0 and dt ?

Hi all,
I would like to know whether it is possible to create an intensity waveform like you can do with a 1-d waveform (with "build waveform") so that you get a cluster with the waveform array, the t_0, the dtand the attributes.
If not I would like to know the following: I use references to cluster typedefs to update my controls and indicaters on the front panel. Now if I use a property node for the intensity graph to set the offset and multiplier on the x-scale, the x-scale on the graphs on the sub-VI work perfectly, however not on the real front panel, probably since these get updated through a reference. Does anyone have a clue how to fix this?
Regards, Pieter

You are only writing the "value" of the type definition via the property node. This does not include properties such as offset and multiplier.
On a sidenote, you are using way too much code for most operations.
For example, the to-I32 can be placed on the cluster, so only one instance is needed.
Also property nodes are resizeable, so only one instance is needed.
There are also Rube Goldberg constructs, such as ">0 *AND* TRUE", which is the same as a simple ">0"
Overall, you are really fragmenting memory by constantly building and then resizing arrays to keep them at a max size of 2880. This can cause performance problems due to the constant need of reallocations. It might be better to use fixed size arrays and do things "in place".
Message Edited by altenbach on 03-19-2009 09:57 AM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
OneIsEnough.png ‏8 KB
CombineProperties.png ‏3 KB

ASA 8.0 VPN cluster with WEBVPN and Certificates

I'm looking for advice from anyone who has implemented or tested ASA 8.0 in a VPN cluster using WebVPN and the AnyConnect client. I have a stand alone ASA configured with a public certificate for SSL as vpn.xxxx.org, which works fine.
According to the config docs for 8.0, you can use a FQDN redirect for the cluster so that certificates match when a user is sent to another ASA.
Has anyone done this? It looks like each box will need 2 certificates, the first being vpn.xxxx.org and the second being vpn1.xxxx.org or vpn2.xxxx.org depending on whether this is ASA1 or ASA2. I also need DNS forward and reverse entries, which is no problem.
I'm assuming the client gets presented the appropriate certificate based on the http GET.
Has anyone experienced any issues with this? Things to look out for migrating to a cluster? Any issues with replicating the configuration and certificate to a second ASA?
Example: Assuming ASA1 is the current virtual cluster master and is also vpn1.xxxx.org. ASA 2 is vpn2.xxxx.org. A user browses to vpn.xxxx.org and terminates to ASA1, the current virtual master. ASA1 should present the vpn.xxxx.org certificate. ASA1 determines that it has the lowest load and redirects the user to vpn1.xxxx.org to terminate the WebVPN session. The user should now be presented a certificate that matches vpn1.xxxx.org. ASA2 should also have the certificate for vpn.xxxx.org in case it becomes the cluster master during a failure scenario.
Thanks,
Mark

There is a bug associated with this issue: CSCsj38269. Apparently it is fixed in the iterim release 8.0.2.11, but when I upgraded to 8.0.3 this morning the bug is still there.
Here are the details:
Symptom:
========
ASA 8.0 load balancing cluster with WEBVPN.
When connecting using a web browser to the load balancing ip address or FQDN,
the certifcate send to the browser is NOT the certificate from the trustpoint
assigned for the load balancing using the
"ssl trust-point vpnlb-ip" command.
Instead its using the ssl trust-point certificate assigned to the interface.
This will generate a certificate warning on the browser as the URL entered
on the browser does not match the CN (common name) in the certificate.
Other than the warning, there is no functional impact if the end user
continues by accepting to proceed to the warning message.
Condition:
=========
webvpn with load balancing is used
Workaround:
===========
1) downgrade to latest 7.2.2 interim (7.2.2.8 or later)
Warning: configs are not backward compatible.
2) upgrade to 8.0.2 interim (8.0.2.11 or later)

Can't start WebLogic Server with SP6 and jdk1.2.2 using WebLogic Console

Hi All,
I am trying to install WebLogic 5.1 with SP6 under Windows NT 4.0 with SP6. My goal is to run JSP/Servlets. After going through all the steps described in SP6 Readme I am getting th following exception:
ava.lang.reflect.InvocationTargetException: java.lang.NoSuchMethodError: weblogic.boot.ServerClassLoader: method getClassLoadNotify()Lweblogic/boot/ClassLoadNotify; not found
     at weblogic.utils.classloaders.GenericClassLoader.<init>(GenericClassLoader.java:140)
     at weblogic.utils.classloaders.GenericClassLoader.<init>(GenericClassLoader.java:112)
     at weblogic.utils.classloaders.GenericClassLoader.<init>(GenericClassLoader.java:104)
     at weblogic.utils.classloaders.RecursiveReloadOnModifyClassLoader.<init>(RecursiveReloadOnModifyClassLoader.java:53)
     at weblogic.utils.classloaders.RecursiveReloadOnModifyClassLoader$SingleSlave.<init>(RecursiveReloadOnModifyClassLoader.java:149)
     at weblogic.servlet.internal.ServletContextImpl.setClassLoader(ServletContextImpl.java:1408)
     at weblogic.servlet.internal.ServletContextImpl.<init>(ServletContextImpl.java:518)
     at weblogic.t3.srvr.HttpServer.initServletContexts(HttpServer.java, Compiled Code)
     at weblogic.t3.srvr.HttpServer.start(HttpServer.java:388)
     at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java, Compiled Code)
     at weblogic.t3.srvr.T3Srvr.main(T3Srvr.java:827)
     at java.lang.reflect.Method.invoke(Native Method)
     at weblogic.Server.startServerDynamically(Server.java:99)
     at weblogic.Server.main(Server.java:65)
     at weblogic.Server.main(Server.java:55)
The installation document is pretty bad intermixing different types of installations. Where can I find steps or what do I need to do to get WebLogic to run with JDK1.2.2 if I want to start it up from WebLogic console only?
Thanks,
Mark.

Try rather using the 1.4 version available here: http://java.sun.com/j2ee/1.4/
and use this dedicated forum: http://forum.java.sun.com/forum.jsp?forum=136
-Alexis

Sharing Weblogic instance with Forms and ADF apps

We have both Oracle Forms and ADF (10.1.3.4) apps that we are planning to deploy to Weblogic. We are looking for the best approach for the architecture. Our user base is small (30-50 users) and the concurrent demand will be low as well.
Options we are considering are:
1. Two separate Weblogic servers, one for Forms and one for ADF
2. One WL server with 2 domains, one for Forms and one for ADF
3. One WL server and 1 domain serving both Forms and ADF. We'd probably create the domain for Forms initially then deploy the ADF apps to it as well as the ADF runtime libraries.
Are there any tips as to what we should consider in making our decision?

1. Two separate Weblogic servers, one for Forms and one for ADF
this will actually segregate the applications.. both application will work independently.. still have to consider about the memory leaks as running two separate servers will take lot of resources.. no common library files access..2. One WL server with 2 domains, one for Forms and one for ADF
rather good approach..works well.. still each will work independently.. no common library dependencies..3. One WL server and 1 domain serving both Forms and ADF. We'd probably create the domain for Forms initially then deploy the ADF apps to it as well as the ADF runtime libraries.
both application can refer to common libraries..

Write/Read cluster with ftp and datasocket

I try to save a cluster to a file on my RT-target from my host machine via ftp and datasocket. I can use the DS examples between host and target but when I connect a cluster to either DS Write or DS Read the VI stops with error 42 (Generic error). The help for DataSocket does not mention any constriction concerning the data type. Is this a bug or a feature?
I found a workaround by saving the cluster to a local file and transferring this to the RT-target with FTP-VI's but the DataSocket solution would be much simpler.
LabVIEW 8.6.1
Attachments:
clusterDS.jpg ‏24 KB
Error42.jpg ‏12 KB

Hi,
I found the reason for the generic error: the file to write or read has to have a extension "dsd" (or "wav"), otherwise you'll get the error. With a .dsd extension I was able to save the cluster. I have not yet managed to read it back but at least DS Read does not abort with the generic error. Interesting thing is if you use an other extension than dsd when writing, an empty file is actually created on the target system.
Attachments:
DSWriteCluster.vi ‏7 KB
DSReadCluster.vi ‏10 KB

404 error weblogic cluster with IIS

Hello,
I am using weblogic 10.3.3 clustering with IIS7 redirection. I created iisproxy.ini with following parameters
WebLogicCluster=<hostname>:7001,<hostname2>:7003
ConnectTimeoutSecs=20
ConnectRetrySecs=2.
In this case I am getting 404 error when I try to access my application. If I use
WebLogicHost=<hostname>
WebLogicPort=7001
ConnectTimeoutSecs=20
ConnectRetrySecs=2
then I am able to access the application. even I tried with
WebLogicHost=<hostname>
WebLogicPort=7001
WebLogicCluster=<hostname>:7001,<hostname2>:7003
ConnectTimeoutSecs=20
ConnectRetrySecs=2
I am getting the same 404 error. sometimes I am able to launch the application(after so many restarts), but after few seconds I am getting the same error 404.
Please help me out to resolve this issue.
Thanks in advance

Can I ask you if you find the solution at your problem?
I am facing same problem, I hope you can help me.............................

Continous HTTP access error logged when using Weblogic Cluster

I am not sure if this is the right forum for this discussion, but here we go anyways.
We have created a Weblogic Cluster with one Administration Server and up to 12 Managed Servers. Our Weblogic version is 9.2.
SSL has been enabled for all Servers and the HTTP Listen Ports are all turned off. The cluster and all applications are working fine and communicating over HTTP as expected, however the logs grow 3MB+ per hour due to an error that repeatedly logged. This error appears to be an attempt by an internal Weblogic process to access some resource over HTTP.
Here are the various messages received in the logs. There are 3 messages logged per error occurred.
This first log message is from the domain log (I replaced the hostname/IP info with <PEER>):
####<Aug 11, 2008 12:08:46 PM GMT+00:00> <Warning> <Security> <PEER> <ManagedServer7> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1218456526962> <BEA-090475> <Plaintext data for protocol HTTP was received from peer <PEER> instead of an SSL handshake.>
This second log message is from the ".out" log from the Administration Server:
####<Aug 11, 2008 12:08:58 PM GMT+00:00> <Info> <ServletContext-/bea_wls_internal> <PEER> <AdminServer> <[ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)'> <<anonymous>> <> <> <1218456538658> <000000> <HTTPClntLogin: Login rejected with code: 'Failed', reason: java.net.ProtocolException: HTTP tunneling is disabled
at weblogic.rjvm.http.HTTPServerJVMConnection.acceptJVMConnection(HTTPServerJVMConnection.java:88)
at weblogic.rjvm.http.TunnelLoginServlet.service(TunnelLoginServlet.java:80)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3231)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2002)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1908)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1362)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)
This last message is from the access.log for the Admin Server:
<PEER> - - [11/Aug/2008:12:08:58 +0000] "GET /bea_wls_internal/HTTPClntLogin/a.tun?wl-login=https+dummy+WLREQS+9.2.2.0+dummy+%0A&rand=8038349418070109915&AS=2048&HL=19 HTTP/1.1" 200 1337
I have searched all over trying to find a solution but with no luck thus far. I have seen some posts about turning on HTTPTunneling and this does seem to prevent the error from occurring, but this is not a solution for us.
I could really use some help in understanding whats going on and trying to resolve this issue. Our client will make a big deal out of this and will want a solution. Any help would be greatly appreciated.
Message was edited by:
user651444

Hi,
We had this problem with WebLogic Platform 9.2 MP2, running on Solaris. The patch CR344429 worked fine. The corresponding patch for 9.2 MP3 is CR370091. You can get these patches through Oracle Support.
A couple of points:
1. We did not have to set StartScriptEnabled=true for the patch to work. We use the SSL Niode manager.
2. Using the t3: protocol (-Dweblogic.management.server=t3://<admin server listen address>:<admin server listen port) does stop these exceptions, but causes these warning messages to appear in the administration server log file:
<Warning> <[STANDBY] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <...> <BEA-002637> <Failed to register a disconnect listener because of weblogic.rmi.extensions.DisconnectMonitorUnavailableException: Could not register a DisconnectListener for [weblogic.rmi.internal.BasicRemoteRef ......>
<Warning> <[STANDBY] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <...> <BEA-002637> <Failed to register a disconnect listener because of weblogic.rmi.extensions.DisconnectMonitorUnavailableException: Could not register a DisconnectListener for [weblogic.rmi.internal.BasicRemoteRef ......>
Hope these comments help.

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?
          > >
          > >
          >

Cluster with shared domain folder using OCFS2 and the domain /tmp folder

I've setup a cluster with two machines and one managed server on each machine. One of the machines also hosts the admin server.
Initially, both managed servers were running on the same machine. Everything worked well. When I move to having two machines, I didn't want to have to independently maintain the domain folder on each machine.
So I decided to setup a shared drive between the machines and use OCFS2 to share the domain folder between the two machines.
Everything started up fine, but when I deployed software to the server I would frequently (but not always) get this error:
[wldeploy] Target state: deploy failed on Cluster cluster-01
[wldeploy] weblogic.management.DeploymentException: [Deployer:149189]Attempt to operate 'deploy' on null BasicDeploymentMBean for deployment mylibrary#[email protected]. Operation can not be performed until server is restarted.
After looking around a bit on google I saw this issue:
http://download.oracle.com/docs/cd/E11035_01/wls100/issues/known_resolved.html#CR279281
which says
Some OS and NFS combinations result in deployment failures or configuration updates with an exception like:
weblogic.management.DeploymentException: Attempt to operate 'distribute' on null BasicDeploymentMBean
Workaround or Solution:
* Run statd() and lockd() processes on every NFS client that accesses a remote NFS volume.
* If multiple servers that share the same domain root are started with different user Ids of same group, set the correct "umask" for the server processes so that a file created by one server can be opened for read/write by other servers without security exceptions.
Unfortunately, I wasn't running NFS, so the workaround didn't help me.
Through dump luck, I tried this:
I replaced the domainroot/tmp folder with a symbolic link to a folder on each machine's local filesystem. Following that change my deployments work everytime.
Does anyone know why this change worked? What is the purpose of the /tmp folder in a domain folder?
Are there any switches I could turn on to get more information about the exact error that causes the deployment mbean to come back null?

It may not be the same situation, but I had this "deployer:149189" error and it turned out to be mixing WLS 10.0 and 10.3 installations together in the same install directory and not being scrupulous about environment setup. I think the problem was caused by accidentally running a 10.0 domain with Java 1.6.
Eoin.

Apache Proxy Plugin with SSL in Weblogic Cluster

Hi,
I have configured a weblogic cluster and configured SSL. Then I configured the apache plugin to work with the cluster machines with non ssl and worked succesfull but when I configured the ssl communication between apache and weblogic I´m having problems.
The actual configuration is:
<Location /spmlws>
SetHandler weblogic-handler
WLLogFile /var/log/httpd/tmpweblogic1.log
DebugConfigInfo ON
Debug ALL
KeepAliveEnabled ON
KeepAliveSecs 15
WebLogicPort 7002
SecureProxy ON
TrustedCAFile /opt/freeware/etc/httpd/conf/trustedCA35cert.pem
TrustedCAFile /opt/freeware/etc/httpd/conf/trustedCA36cert.pem
WLProxySSL ON
RequireSSLHostMatch false
WebLogicCluster machine35:7002,machine36:7002
EnforceBasicConstraints false
</Location>
The problem is that the plugin always takes the last TrustedCAFile. In this way if machine36 is down the plugin tries to send all the request to machine35 but it takes the TrustedCAFile for the machine36 (/opt/freeware/etc/httpd/conf/trustedCA36cert.pem) hence the apache complains
[Wed Jun 30 11:13:56 2010] [error] [client 10.19.232.249] ap_proxy: trying GET /spmlws/OIMProvisioning at backend host '10.19.232.97/7002; got exception 'WRITE_ERROR_TO_SERVER [os error=0, line 796 of ../nsapi/URL.cpp]: '
What can I do to have multiple TrustedCAFile or to have working the communication between apache and weblogic cluster using SSL?
thanks in advance

Acording to the documentation this is not possible.
One way to achieve the load balancing of n-weblogic servers in cluster using ssl is to configure de HttpClusterServlet.

Issue listeneing queue from Weblogic Cluster server with multiple managed server

Haveing issue listeneing queue from Weblogic Cluster server with multiple managed server.
Weblogic Cluster structure is like
Weblogic Cluster01
--ManagedServer01(http://server01.myhost.com:7001)
--ManagedServer02(http://server02.myhost.com:7001)
JMS Servers
JMSserver01 targeting: ManagedServer01
JMSserver02 targeting: ManagedServer02
JMSmodule
ConnectionFactory01 targeting:JMSserver01,JMSserver02
UDQueue01 targeting:JMSserver01,JMSserver02
Uniform Distributed Queue in Monitoring tab showing like this
mysystemmodule!JMSserver01@UDQueue01
mysystemmodule!JMSserver02@UDQueue01
So when I am sending message to any Host(by specifying the provider URL) its distributing equally on both server like
mysystemmodule!JMSserver01@UDQueue01 10
mysystemmodule!JMSserver02@UDQueue01 10
But when try to listen message from these queue, it is listening from one server, for which URL given to connect.
mysystemmodule!JMSserver01@UDQueue01 0
mysystemmodule!JMSserver02@UDQueue01 10
untill I connect to other server by giveing its URL, will not able to access other message left on the queue.
Solutions that tried
1) we have tried give both server URL coma sparated in provider URL
we need to configur same scenario for 5 managed server with 3 listener on other servers.
Do any one have solution for this.

You need to have:
1. Consumers connected to each UDQ member
OR
2. If no consumers in some of the members is expected, you can configure Forward Delay (specify the amount of time, in seconds, that a queue member with messages, but with no consumers, will wait before forwarding its messages to other queue members that do have consumers):
http://docs.oracle.com/cd/E12839_01/apirefs.1111/e13952/taskhelp/jms_modules/distributed_queues/ConfigureUDQGeneral.html
For example you can set it to 10 (10s)
Additional Information here:
http://docs.oracle.com/cd/E23943_01/web.1111/e13727/dds.htm#i1314228
http://docs.oracle.com/cd/E23943_01/apirefs.1111/e13951/mbeans/DistributedQueueBean.html?skipReload=true#ForwardDelay
How Does JMS Load Balancing Work with Distributed Queues and Uniform Distributed Queues? (Doc ID 827294.1)
I hope this helps
Best Regards
Luz

Weblogic Cluster with i686 and Itanium

Similar Messages

Maybe you are looking for