Clustering for Weblogic 6.1

          I am trying to cluster two weblogic 6.1 servers.
          I tried using the configurations on the console . It did not work.
          Also please explain about the license issues with Weblogic 6.1.
          Should one purchase addtional license for cluster to work?

Is there any way to over come the single point of failure bottleneck. Is bea
          planning something on those lines
          in the next release??
          regards,
          "Cameron Purdy" <[email protected]> wrote in message
          news:[email protected]..
          > Yes, one good place to look is in the JMS newsgroup.
          >
          > The main limitation is that queues are single points of failure (i.e. they
          > are pinned to a single server), so while you can add to the queue from any
          > server, the queue itself is only hosted on one server.
          >
          > Peace,
          >
          > --
          > Cameron Purdy
          > Tangosol, Inc.
          > Clustering Weblogic? You're either using Coherence, or you should be!
          > Download a Tangosol Coherence eval today at http://www.tangosol.com/
          >
          >
          >
          > "Vaibhav" <[email protected]> wrote in message
          > news:[email protected]..
          > >
          > > hi
          > > Does Weblogic 6.1 supports clustering for JMS.
          > > Can we get some links on this issue.
          > >
          > > thanks
          >
          >

Similar Messages

Calrification for Weblogic Clustering

Our J2EE application is multitiered where JSPs&Servlets(Frontend) runs in a weblogic instance and EJBs(Backend) runs in two weblogic instances which are clustered. Here the Frontend weblogic instance and one of the clustered Backend weblogic instance are running in a same machine A and the other clustered Backend weblogic instance is running in another machine B. We had tested the following cases for Failover
Note :
please consider "JSPs&Servlets" as Frontend and "EJBs" as Backend.
Weblogic 9.2 and stateless session beans are used.
Frontend is not clustered.
Case 1:
We are doing a transaction where the request from frontend goes to one of the of the Clustered Backend weblogic instance. Before the transaction gets completed this backend weblogic instance is made to shutdown. The transaction has failed over to the another available Clustered Backend weblogic instance . The transaction had completed successfully and the Failover is working fine.
Case 2:
We are doing a transaction where the request from frontend(running in Machine A) goes to the Clustered Backend weblogic instance running in the Machine A itself. Before the transaction gets completed, the machine A is made to shutdown (i.e. both frontend and backend weblogic instance shuts down at the same time). Here the transaction has failed and could not able failover to the other available Backend weblogic instance .
Please clarify whether weblogic cluster supports the Backend failover when both the Frontend and Backend are brought down at the same time?
Any weblogic CLustering experts, please clarify...

Hi Jayesh,
Thanks very much for your reply.
I understood that your reply "You might want to consider collapsing front end (servlet & JSP) and back end (EJB) servers into a single WebLogic server for better fail over support." means that JSP&Servlet and EJB should be combined to form a single archive(EAR) which has to be deployed in single weblogic instance.
Please check whether my assumptions are correct for your suggestion on better failover.
1.The cluster configuration of JSPs&Servlet(web.xml) and EJBs(ejb-jar.xml) running in single weblogic instance will be similar to the cluster configuration of JSPs&Servlet(web.xml) and EJBs(ejb-jar.xml) running in separate weblogic instances. i.e All the configurations are same, but instead of the application running in separate weblogic instances, it will run in single weblogic instance.
2.In the URL for specifying the EJB connection from the JSP&Servlet, the cluster IP address should be used.
You have mentioned that if EJB client is not alive, the failover will not work. Please clarify how the failover will work in this case only(JSP&Servlet and EJB running in single weblogic instance and clustered).
Thanks,
Thiyagu

BPM Enterprise for weblogic and clusters

good morning every body
what is the best practice for High Avalibilty Clustered environement for BPM enterprise for weblogic ?
i know that clustering is done on the Weblogic server side but is there is any constraints regarding to ALBPM clustering
if some one would direct me to a diagram of the clustring best practice it would be appreciated!

Hi,
Event I am facing the similar problem but its irrregular(but most of the time). I get following as a log while shutting down the server.
Stopping Weblogic Server...
Initializing WebLogic Scripting Tool (WLST) ...
Welcome to WebLogic Server Administration Scripting Shell
Type help() for help on available commands
Connecting to t3://localhost:7001 with userid weblogic ...
Successfully connected to Admin Server 'AdminServer' that belongs to domain 'atg
_domain'.
Warning: An insecure protocol was used to connect to the
server. To ensure on-the-wire security, the SSL port or
Admin port should be used instead.
Shutting down the server AdminServer with force=false while connected to AdminSe
rver ...
And it countinues...
Regards,
Kevin Chheda

Problems clustering a Weblogic Stateful EJB 3.0

Hello!
I'm developing a Stateful EJB 3.0 with clustering configuration for weblogic 11G. My client gets a reference to the RemoteInterface, invoke a method and it's working. Then I shutdown the server where the EJB was created and the client reinvoke (using the same reference) a method and get's this error:
javax.ejb.EJBException: Exception waiting for response; nested exception is:
     java.io.EOFException: Connection closed by peer; nested exception is: java.io.EOFException: Connection closed by peer
java.io.EOFException: Connection closed by peer
     at weblogic.iiop.EndPointImpl.handleCloseConnection(EndPointImpl.java:602)
     at weblogic.iiop.EndPointImpl.processMessage(EndPointImpl.java:545)
     at weblogic.iiop.EndPointImpl.handleMessage(EndPointImpl.java:500)
     at weblogic.iiop.EndPointImpl.dispatch(EndPointImpl.java:324)
     at weblogic.iiop.ConnectionManager.dispatch(ConnectionManager.java:126)
     at weblogic.iiop.MuxableSocketIIOP.dispatch(MuxableSocketIIOP.java:302)
     at weblogic.socket.BaseAbstractMuxableSocket.dispatch(BaseAbstractMuxableSocket.java:298)
     at weblogic.socket.SocketMuxer.readReadySocketOnce(SocketMuxer.java:915)
     at weblogic.socket.SocketMuxer.readReadySocket(SocketMuxer.java:844)
     at weblogic.socket.JavaSocketMuxer.processSockets(JavaSocketMuxer.java:335)
     at weblogic.socket.SocketReaderRequest.run(SocketReaderRequest.java:29)
     at weblogic.work.ExecuteRequestAdapter.execute(ExecuteRequestAdapter.java:21)
     at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:145)
     at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:117)
javax.ejb.EJBException: Exception waiting for response; nested exception is:
     java.io.EOFException: Connection closed by peer; nested exception is: java.io.EOFException: Connection closed by peer
     at weblogic.ejb.container.internal.RemoteBusinessIntfProxy.unwrapRemoteException(RemoteBusinessIntfProxy.java:109)
     at weblogic.ejb.container.internal.RemoteBusinessIntfProxy.invoke(RemoteBusinessIntfProxy.java:91)
     at $Proxy0.getMas(Unknown Source)
     at com.ibermatica.pruebas.pruebaEJB30SF.getPrueba(pruebaEJB30SF.java:79)
     at com.ibermatica.pruebas.pruebaEJB30SF.main(pruebaEJB30SF.java:26)
Caused by: java.io.EOFException: Connection closed by peer
     at weblogic.iiop.EndPointImpl.handleCloseConnection(EndPointImpl.java:602)
     at weblogic.iiop.EndPointImpl.processMessage(EndPointImpl.java:545)
     at weblogic.iiop.EndPointImpl.handleMessage(EndPointImpl.java:500)
     at weblogic.iiop.EndPointImpl.dispatch(EndPointImpl.java:324)
     at weblogic.iiop.ConnectionManager.dispatch(ConnectionManager.java:126)
     at weblogic.iiop.MuxableSocketIIOP.dispatch(MuxableSocketIIOP.java:302)
     at weblogic.socket.BaseAbstractMuxableSocket.dispatch(BaseAbstractMuxableSocket.java:298)
     at weblogic.socket.SocketMuxer.readReadySocketOnce(SocketMuxer.java:915)
     at weblogic.socket.SocketMuxer.readReadySocket(SocketMuxer.java:844)
     at weblogic.socket.JavaSocketMuxer.processSockets(JavaSocketMuxer.java:335)
     at weblogic.socket.SocketReaderRequest.run(SocketReaderRequest.java:29)
     at weblogic.work.ExecuteRequestAdapter.execute(ExecuteRequestAdapter.java:21)
     at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:145)
     at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:117)
The description of my test is:
+I have a Weblogic cluster (c1, c2)
+I have developed an 3.0 Stateful EJB (configurated for replication)
+My client gets an EJB Instance from c1 and invoke one method (debugging)
+I stops my client
+I shutdown my server (c1)
+My client invokes another EJB method end gets the error described before.
It seems like the Server don't replicate the EJB.
My replicatión ejb deployment descriptor is (weblogic.xml):
<weblogic-enterprise-bean>
<ejb-name>Session30EJBSFBean</ejb-name>
<stateful-session-descriptor>
<stateful-session-clustering>

<use-serverside-stubs>true</use-serverside-stubs>
<replication-type>InMemory</replication-type>
</stateful-session-clustering>
</stateful-session-descriptor>
</weblogic-enterprise-bean>
My ejb bean class is:
@Stateful(name = "Session30EJBSF", mappedName = "clustering30-cluster301-Session30EJBSF")
@Remote
public class Session30EJBSFBean implements Session30EJBSF {
private SessionContext _context;
private int contador= 0;
private String user="";
public Session30EJBSFBean() {
public void inicio(String user){
this.user= user;
contador=0;
public void mas(){
contador++;
public int getMas(){
return contador;
public String getUser(){
return this.user;
My Remote EJB:
import javax.ejb.Remote;
@Remote
public interface Session30EJBSF {
public void inicio(String user);
public void mas();
public int getMas();
public String getUser();
My client:
public class pruebaEJB30SF {
public pruebaEJB30SF() {
super();
public static void main(String[] args) {
pruebaEJB30SF pruebaEJB30SF = new pruebaEJB30SF();
try {
pruebaEJB30SF.getPrueba();
} catch (Exception e) {
e.printStackTrace();
public Context getInitialContext() throws NamingException {
//String url="t3://c1:8001";
String url="iiop://c1:8001";
String user="any";
String password="any";
Properties p= new Properties();
//p.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.T3InitialContextFactory");
p.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFactory");
p.put(Context.PROVIDER_URL,url);
p.put(Context.SECURITY_PRINCIPAL,user);
p.put(Context.SECURITY_CREDENTIALS,password);
return new InitialContext(p);
public void getPrueba() throws NamingException, RemoteException,
CreateException {
// <PROFILING>
Context ctx= getInitialContext();
//2.0 Stateful
Object ref= ctx.lookup("clustering30-cluster301-Session30EJBSF#.Session30EJBSF");
Session30EJBSF home= (Session30EJBSF)PortableRemoteObject.narrow(ref, Session30EJBSF.class);
Session30EJBSF ejb=home;
ejb.inicio("User1");
ejb.mas();
System.out.println( ejb.getMas());// I put here a breakpoint and I shutdown the serer c1
ejb.mas();
System.out.println( ejb.getMas());
ejb.mas();
System.out.println( ejb.getMas());//Caida
ejb.mas();
System.out.println( ejb.getMas());
I have developed a EJB 2.1 and a EJB 2.1 client and it's working. The most important change betwin ejb 3.0 client and my 2.1 client is that in 2.1 I use the getHandle method and a Home, not a Remote.
Please, can anyone help me.
Thanks.

Hi,
Please change your Client Code as below: URL must be pointing to the comma Separated address of your ManagedServers Address/Port which are part of Cluster like For Example Suppose you have 2 managedServers in ClusterA ..... t3://MS1Host:8003,MS2Host:8005
public Context getInitialContext() throws NamingException {
<strike><font color=red>String url="t3://c1:8001";</font></strike>
<b>String url="t3://ManagedServer1HostName:port,ManagedServer2HostName:port";</b>
String user="any";
String password="any";
Properties p= new Properties();
p.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFactory");
p.put(Context.PROVIDER_URL,url);
p.put(Context.SECURITY_PRINCIPAL,user);
p.put(Context.SECURITY_CREDENTIALS,password);
return new InitialContext(p);
Thanks
Jay SenSharma
http://weblogic-wonders.com/weblogic (WebLogic Wonders Are here)

RMI Clustering in Weblogic 7.0

Hi !
I am trying to use RMI Clustering in Weblogic 7.0. I followed the samples in the
documentation and it doesnt work for me. I could successfully bing my RMi Server
object to the JNDI tree and could view it via the weblogic JNDI tree. Even the
lookup is fine, but when I invoke a method on the remote object via the client,
I get the following error. Clearly there is something wrong with the Dynamic stub
downloaded from the JNDI tree.
Any Clues please...
Thanks
Sanjay
class examples.rmi.hello.HelloImpl_WLStub
java.rmi.ConnectException: Couldn't connect to weblogic.rjvm.RJVMImpl@3a0ab1 -
id: '6003776402499002017C:15.10.45.93R:12
46860412257523095S:15.10.45.93:[7001,7001,7002,7002,7001,7002,-1]:examples:examplesServer'
connect time: 'Fri Sep 06 08:
42:01 IST 2002'
at weblogic.rjvm.ConnectionManager.getOutputStream(ConnectionManager.java:1559)
at weblogic.rjvm.RJVMImpl.getRequestStream(RJVMImpl.java:363)
at weblogic.rmi.internal.BasicRemoteRef.getOutboundRequest(BasicRemoteRef.java:88)
at weblogic.rmi.internal.BasicRemoteRef.invoke(BasicRemoteRef.java:116)
at examples.rmi.hello.HelloImpl_WLStub.sayHello(Unknown Source)
at examples.rmi.hello.HelloClient.main(HelloClient.java:42)

Hi !
I am trying to use RMI Clustering in Weblogic 7.0. I followed the samples in the
documentation and it doesnt work for me. I could successfully bing my RMi Server
object to the JNDI tree and could view it via the weblogic JNDI tree. Even the
lookup is fine, but when I invoke a method on the remote object via the client,
I get the following error. Clearly there is something wrong with the Dynamic stub
downloaded from the JNDI tree.
Any Clues please...
Thanks
Sanjay
class examples.rmi.hello.HelloImpl_WLStub
java.rmi.ConnectException: Couldn't connect to weblogic.rjvm.RJVMImpl@3a0ab1 -
id: '6003776402499002017C:15.10.45.93R:12
46860412257523095S:15.10.45.93:[7001,7001,7002,7002,7001,7002,-1]:examples:examplesServer'
connect time: 'Fri Sep 06 08:
42:01 IST 2002'
at weblogic.rjvm.ConnectionManager.getOutputStream(ConnectionManager.java:1559)
at weblogic.rjvm.RJVMImpl.getRequestStream(RJVMImpl.java:363)
at weblogic.rmi.internal.BasicRemoteRef.getOutboundRequest(BasicRemoteRef.java:88)
at weblogic.rmi.internal.BasicRemoteRef.invoke(BasicRemoteRef.java:116)
at examples.rmi.hello.HelloImpl_WLStub.sayHello(Unknown Source)
at examples.rmi.hello.HelloClient.main(HelloClient.java:42)

Single Client Access Name for Weblogic Forms and Reports.

I have a 2 node clustered system:
Windows 2008 R2 64-bit
Weblogic 10.3.3 (on each node)
Weblogic Forms and Reports 11.1.1.3 (on each node)
Database 11gR2 RAC 11.2.0.1 (on each node)
The forms and reports are clustered and I can connect to each from each of the two servers and the cluster is working well.
The database uses Single Client Access Name (SCAN) to present the database as if it were one server called dbserver1.
I was wondering if there was a similar thing for Weblogic and what everyone else uses to present their application as a single name to the user.
I tried using Windows Network Load Balancing, but this stops the database scan listeners from working.
Thanks.

Dear,
Did you find an answer to your question back in 2009?
We are facing the same installation architecture, but we do not find any concrete information regarding SCAN with Oracle Forms 11g
Geert

Performance Tools for Weblogic

Hello All!
I need help! I am trying to find out which of the tools is better
suited for me to be able to do performance testing of an application
under load.
I am looking for a tool that can provide me detailed application
performance metrics. Seems like both Insight and Perform Assure can do
this job for me.
If any of you have had experience with using performance tools such as
Prescise Insight or Sitraka's Perform Assure I would appreciate any
input you might have on your usage experience of these tools.
Also if you know of any other tools that might provide similar
information such as the above tools, that would be really helpful.
Thanks a bunch!
Neil.

Cameron,
Thanks for your input! Sounds like you are probably using these
products.
I saw the PerformAssure demo. Their GUI is very slick!! PerformAssure
does some cool stuff like comparing EJB metrics with system metrics
and were able to show me the EJB method that was causing a problem
with a petstore application.
I heard about this new tool from a company called Performant
(http://www.performant.com). I am signed up for a demo with these
folks. Will let you all know what I find.
I looked at Wily site and didn't persue them as they seem to be
deployable in the production environment. Our application is not live
yet, but we want to be able to make sure it can handle good load ;)
Thanks!
--N
"Cameron Purdy" <[email protected]> wrote in message news:<[email protected]>...
I haven't had a chance yet to look at Sitraka's software, but Precise
Indepth/J2EE and Wily Introscope are both pretty popular with Weblogic, and
I think they both do a good job of what they do.
Peace,
Cameron Purdy
Tangosol, Inc.
http://www.tangosol.com/coherence.jsp
Tangosol Coherence: Clustered Replicated Cache for Weblogic
"Neil" <[email protected]> wrote in message
news:[email protected]..
Hello All!
I need help! I am trying to find out which of the tools is better
suited for me to be able to do performance testing of an application
under load.
I am looking for a tool that can provide me detailed application
performance metrics. Seems like both Insight and Perform Assure can do
this job for me.
If any of you have had experience with using performance tools such as
Prescise Insight or Sitraka's Perform Assure I would appreciate any
input you might have on your usage experience of these tools.
Also if you know of any other tools that might provide similar
information such as the above tools, that would be really helpful.
Thanks a bunch!
Neil.

Error in stateless-clustering in weblogic-ejb-jar.xml

Hi,
This is my <weblogic-ejb-jar.xml> and I see an error in <stateless-bean-is-clusterable>. Can anybody please help me regarding this.
<?xml version="1.0" encoding="UTF-8"?>
<weblogic-ejb-jar xmlns="http://www.bea.com/ns/weblogic/10.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.bea.com/ns/weblogic/10.0 http://www.bea.com/ns/weblogic/10.0/weblogic-ejb-jar.xsd">
<weblogic-enterprise-bean>
<ejb-name>Sample1</ejb-name>
<stateless-session-descriptor>
<pool>
<initial-beans-in-free-pool>10</initial-beans-in-free-pool>
</pool>
<stateless-clustering>
<stateless-bean-is-clusterable>TRUE</stateless-bean-is-clusterable>
</stateless-clustering>
</stateless-session-descriptor>
</weblogic-enterprise-bean>
<weblogic-enterprise-bean>
<ejb-name>Sample2</ejb-name>
<stateless-session-descriptor>
<pool>
<initial-beans-in-free-pool>10</initial-beans-in-free-pool>
</pool>
<stateless-clustering>
<stateless-bean-is-clusterable>TRUE</stateless-bean-is-clusterable>
</stateless-clustering>
</stateless-session-descriptor>
</weblogic-enterprise-bean>
<weblogic-enterprise-bean>
<ejb-name>Sample3</ejb-name>
<stateless-session-descriptor>
<pool>
<initial-beans-in-free-pool>10</initial-beans-in-free-pool>
</pool>
<stateless-clustering>
<stateless-bean-is-clusterable>TRUE</stateless-bean-is-clusterable>
</stateless-clustering>
</stateless-session-descriptor>
</weblogic-enterprise-bean>
</weblogic-ejb-jar>
I am using weblogic 10.3 and EJB 3.0 Can I include all the EJBs in a single <weblogic-ejb-jar.xml> file and can I put it in the EAR->EarContent->META-INF folder, where the application.xml and weblogic-application.xml files exist.
Basically, I am trying to include <initial-beans-in-free-pool> and <stateless-bean-is-clusterable> for each of my EJBs. Since there is no annotation equivalent for them in EJB 3.0, I had to include the <weblogic-ejb-jar.xml> file. I appreciate if anybody can suggest me if there is any annotation equivalent for these.
Thank you,
Sowmya

Hi,
1. please try with <stateless-bean-is-clusterable>true</stateless-bean-is-clusterable>
2. the EJB Specification requires "The deployment descriptor must be stored with the name META-INF/ejb-jar.xml in the ejb-jar file." So you shouldn't put the weblogic-ejb-jar.xml to EAR's META-INF folder.
3. <stateless-bean-is-clusterable> has a default value as "true". so you needn't specify it in your weblogic-ejb-jar.xml if you just want to have the "true" value.
4. default value of <initial-beans-in-free-pool> is 0. Since you're changing the default value, you'll have to specify it in weblogic-ejb-jar.xml. If you can put all EJBs in one ejb jar file, you can have only one weblogic-ejb-jar.xml in the META-INF folder of this ejb jar.
Thanks,
Amy

Apache configuration for weblogic

Hi All
I need your help for configuring my apache for weblogic. Actually we created 2 non clustered server and deployed an application on them. Now we want to achieve the load balancing on the apache side. So, I am just wondering what exactly I should write down in http.conf to achieve it.
e.g in clustered environment we give :
<Location /process>
WebLogicCluster abc:7210,xyz:7210
SetHandler weblogic-handler
</Location>
where abc and xyz are cluster members.
If you have any idea then please share it.
Thanks in Advance.

To configure Apache Plug-in with Weblogic Server, follow the steps below
1. To make Apache server run on a different port say 8080, other than the dafault (80).
Modify the httpd.conf present at
D:\Program Files\Apache Group\Apache2\conf
Change the Listen port to 8080 in the httpd.conf file
Listen 8080
2. Copy the mod_wl_20.so from \wlserver_10.3\server\plugin\win\32 to
D:\Program Files\Apache Group\Apache2\modules
3. Apply the plug-n module by adding these in the httpd.conf file
LoadModule weblogic_module modules/mod_wl_20.so
<Location />
SetHandler weblogic-handler
</Location>
<IfModule mod_weblogic.c>
WebLogicCluster localhost:7003,localhost:7005
Debug ON
WLLogFile c:/temp/wlproxy.log
WLTempDir c:/temp
</IfModule>
4. Restart the Apache Server

Home-is-clusterable for EJB 3.0

Hello,
We had several EJB's of version 2.1 and we wre using home-is-clusterable element of weblogic-ejb-jar.xml. Now we have converted all the ejb's to version 3.0. I am wondering is there any alternative for home-is-clusterable in weblogic-ejb-jar.xml? Since there is no home interface in 3.0.
Regards,
Syed

Please cross-post this in the WLS - EJB sub-forum as you'll probably get a more specialized audience there:
WebLogic Server - EJB

Certification for Weblogic 8.1

First of all, please excuse me for the re-posting of the same topic about JMS. It was due to an error in my navigator. It was not my intention. :.-(
And now, the question. I've seen that Coherence is certified for Weblogic 7.0, but is it also certified for Weblogic 8.1? If not, which version will be?
Thanks and please, excuse me once again for posting error.
BYe

Hi Ignacio,
Coherence works well with WebLogic 8.1.
If you are using the clustered session replication, there is a one-line change you need to make to the Servlet 2.3 module for session replication. In the constructor for the CoherenceRequest class, change the following line:
initializeMaxInactive();
to:
m_iMaxInActive = 30 * 60; // however many seconds until expiry
This work-around is for WebLogic 8.1.
Peace,
Cameron Purdy
Tangosol, Inc.
Coherence: Easily share live data across a cluster!

Plugin(mod_wl.so) for Apache 1.3.X for weblogic 8.1 on Windows

Can anyone tell me where I can get a plugin(mod_wl.so) for Apache 1.3.X for weblogic 8.1 on Windows. The plugins are avaiable for solaris,AIX and linux. But I could not find any thing for Windows. The plugins are available for Apache 2.X.

I have Apache running on two Linux web servers (dell2 and dell3)
and WLS running on two Linux app servers (dell5 and dell6).
I can also run Apache on two Sun/Solaris web servers (sun2 and
sun3). I have the AcceptBacklog parameter set to 100 on each
WLS Server. There is no problem when I drive the WLS servers
through mod_wl.so running on the Sun servers. The CONNECTION_REFUSED is only seen
when I try to drive them through
mod_wl.so on the Apache/Linux systems.
What is the ap_proxy.cpp file referenced in the error message?
It doesn't appear to be part of the Apache source code yet I
can see references to various ap_proxy functions.
Thanks for your help,
Dave Jaffe
[email protected]
"Jong Lee" <[email protected]> wrote:
>
You should not run apache and wls on the same box for load testing since
apache1.3.x
plugin does not maintain keep-alive
connection to weblogic server. Also try to increate the acceptBacklog
parameter
on wls, the default is 50 which might not
be big enough for load.
thanks
Jong
"Dave Jaffe" <[email protected]> wrote:
As described in a posting yesterday, I got the mod_wl.so working
with WL6.0 SP1 in clustered mode on two Linux 6.2 systems
running Apache 1.3.12 driving two clustered WL servers.
However, under moderate stress I see the following message
appear in the Apache error log after about a minute and the
throughput drops and response time skyrockets:
[error] CONNECTION_REFUSED [os error=11, line 1342 of
ap_proxy.cpp]
I've not played with the Apache source but my guess is that this
error message is meaningful to the developer of mod_wl.so
The two WL servers can handle a workload four times heavier than
what I'm describing here using Sun/Solaris web servers running
Apache 1.3.9 and the Solaris version of mod_wl.so
Any pointers would be much appreciated
Dave Jaffe
Dell Solution Enablement Lab
[email protected]

Do i need a high perf SSL offloader (Like Array Networks APV) for WebLogic

we are thinking of deploying Array Networks Load Balancers for WebLogic clusters. The primary goal is to offload SSL from the host OS machine, as we are expecting very high SSL traffic in the range of 2000 to 3000 transactions/sec. Is it a good idea to deploy 3rd party SSL offloaders like Array Networks APV load balancers. The peak throughput requirements are around 250 Mbps at best. But the transaction rate is what is killing us........
-thanks
sikris

I use a Cisco AP (1252G), with antenna air-ant2410y-r. I use 3 antennas (to support 802.11n), for a big exhitibition. On the both (around the booth), there are around 35 different wireless networks. The problem is that sometimes we have some disconnections (with iPad), ok with android tablets.
And you still want to use 802.11b????
Androids and iPads support 802.11a.

Shared disk for weblogic cluster

Hi Gurus,
I've googled about the subject, but didn't find any specific.
Could somebody explain,
Is it possible/certified to create weblogic domain on a clustered file system (i.e. OCFS2)?
I would like to build a cluster with common domain home.
Regards,
Mikhail

Hi Saurabh,
What is the best way to have some shared data
within a cluster. This data needs to be in memory
only, no need for DB persistence. But it can be
upadted (in memory only) and updates should be
visible to any of the servers with in the cluster.
For example - I want to create a hashtable to be
shared within cluster and the hashtable can be
modified from time to time.Tangosol Coherence does just that:
:: http://www.tangosol.com/coherence.jsp
It even supports the same Hashtable API!
Peace,
Cameron Purdy
Tangosol, Inc.
http://www.tangosol.com/coherence.jsp
Tangosol Coherence: Clustered Replicated Cache for Weblogic
"Saurabh" <[email protected]> wrote in message
news:3ed7741f$[email protected]..
>

ACFS recomandations for weblogic cluster

Hi,
Can some one help me to findout material(step by step) for ACFS usage with weblogic clustering.
Originally I started thread here :
Re: ACFS recomandations for weblogic cluster
Thanks in advance for valuable time
Datla

The first question you need to ask yourself is for what purpose do i need this type of filesystem when using a WebLogic Cluster?
The first which comes to mind is the migration of so-called singleton service, such as JMS Servers, persistence stores and JTA.
For example, when a machine fails, we must bring the services, running on the failed machine, up on other machines. The JTA
service plays a critical role in recovery from a failure scenario where transactions are involved. In-flight transactions can hold locks
on underlying resources. If the transaction manager is not available to recover these transactions, resources may hold on to these
locks for a long time. This makes it difficult for an application to function properly. JTA service migration is possible only if the server's
default persistent store (where the JTA logs are kept) is accessible to the server to which the service will migrate.
This where a shared storage mechanism comes into play - to store files which need to be accessible from every server. The concept
of ACFS which is useful in this scenario is the mount model (http://download.oracle.com/docs/cd/E14072_01/server.112/e10500/asmfilesystem.htm#CACJGEAC)
To set-up a mount point you can follow the steps presented here: http://download.oracle.com/docs/cd/E15051_01/wls/docs103/cluster/service_migration.html#wp1049463
This link contains the steps in order to configure JMS migration: http://download.oracle.com/docs/cd/E15051_01/wls/docs103/cluster/service_migration.html#wp1065826
This link contains the steps in order to configure JTA migration: http://download.oracle.com/docs/cd/E15051_01/wls/docs103/cluster/service_migration.html#wp1054024

Clustering for Weblogic 6.1

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