IIS 6 fails to load balance to weblogic cluster

Hi,
We have iis 6 which proxies request to weblogic cluster running on version 9.2 MP1. Recently we noticed the connections are overloaded on a weblogic instance while the other instance had lower connections.
I suspect it to be the IIS load balancing to the single instance. Can anyone help please.
I traced the IIS logs and can see the citrix IP as destination since the user access the application thru citrix sessions.
Thanks,

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How to divide equal load in Oracle Weblogic Cluster Node

Hello Friends..
I install Oracle weblogic 10.3.3.0 and oracle Forms [32 Bit] Version 11.1.1.3.0 (Production) on Two PC, PC-1 and PC-2.
I Create a cluster for load balancing and shifting the load from PC-1 to PC-2. Now I want to know which algorithm is best for equal load balance means i want to transfer equal load on both machine.
If PC-1 have 10 http request then next 10 request transfer to PC-2.
Please guide me.
Thanks,
Sachin

Hi Sachin
You need to have a load balancer or web server in front of your weblogic server cluster.
This is really a tunning excersise, so you need to try several options depending on the load of the enironment, however robin robin (default) should work for you.
You can see more details here:
Load Balancing in a Cluster
Best Regards
Luz

Load balancing for BPEL Cluster

Can anybody tell how to configure the load balancer in BPEL Cluster ..? I am not able to get the correct documents for that. I want the request from the client can be redirect to any of the cluster server that will be having the PPEL Process deployed.
Can i use third party load balancer also or can i use oracle http server as load balancer ....how to configure in both the case?

Hi Dominik.
Thanks for responding to my message.
Where could i find more info relating to the WEB dispatcher.
I also posted a message on OSS and SAP did not mention
a WEB Dispatcher. (Startup Framework and the J2ee dispatcher handing the load balancing)
Is the WEB dispatcher a must or are there alternate solutions. I am still confused on this topic ??
On the current EP5 release, the load balancing is handled
via MS Load Balancing.
Thanks and appreciate the help !!
Morgan
Message was edited by: Morgan Moodley

Load balancing In weblogic 6.1 JMS Cluster

          hi
          i have implemented distributed queues in weblogic as suggested in the JMS performance
          guide.but the problem is that of the 3 queues in cluster the messages always end
          up going to the same queue and the remaining 2 remainin queues are empty. i want
          to perfomr load balancing but i think this ios available only in weblogic 7.0.can
          anyone suggest any alternative workaround ??


I wonder if the JNDINameReplicated setting is taking effect.
          Are there any warning or error messages in your logs?
          Can you see statistics for all three JMS servers on the console?
          Does it work if you use the "./a" syntax?
          illusionz70 wrote:
          > hi,
          > 3 machines are in a cluster.all three machines have their different jms servers
          > and queues under them but target teh same connection factory.therefore all three
          > servers target 3 different machines which are in a cluster. i have weblogic 6.1
          > to which i applied the repective CR(patch) which enables the JNDIREPLICATED parameter.i
          > set this parameter to false.as a result i am able to monitor the 3 queues which
          > have the same jndi names but under different servers.but the problem is when i
          > lookup the queues from client using the machine's ip address(not the cluster ip),
          > the results are haywire.... even though i target say a ip of 30 , the msg goes
          > to ip 20... i dont know why..do you have any idea.
          > NOTE : i dont use the ./a ( where queue is the quename ) syntax in createqueue.
          > i look up the queue using the JNDI name.
          > thanks
          > Tom Barnes <[email protected].bea.com>
          > wrote:
          >
          >>Make sure that your context host and connection
          >>factory (CF) host are actually the same as what
          >>you're expecting.
          >>
          >>How, exactly, are your clients:
          >> (A) looking up their context
          >> (B) looking up their CF
          >>
          >>What are the targets for the CF?
          >>What are the URLs for the servers?
          >>What is the URL the clients are using? How is it
          >>load-balanced among the servers?
          >>Are the servers clustered?
          >>
          >>Tom
          >>
          >>illusionz70 wrote:
          >>
          >>
          >>>hi
          >>> i have implemented distributed queues in weblogic as suggested in
          >>
          >>the JMS performance
          >>
          >>>guide.but the problem is that of the 3 queues in cluster the messages
          >>
          >>always end
          >>
          >>>up going to the same queue and the remaining 2 remainin queues are
          >>
          >>empty. i want
          >>
          >>>to perfomr load balancing but i think this ios available only in weblogic
          >>
          >>7.0.can
          >>
          >>>anyone suggest any alternative workaround ??
          >>
          >

Load balancing without a cluster...!!!!????

Hi boys!
          I have a question for you: my NES proxy server can realize a load
          balancing between 2 weblogic 6.0 servers that are NOT IN A CLUSTER?
          I've done some tests configuring the obj.conf like the 2 weblogic
          servers were in cluster, but I dont' understand if it works correctly.
          May be I ask too much ...
          Thanks
          Patrizia


          I'm assuming your using one browser to test this.
          The first time you access a servlet or a JSP that uses session
          tracking, the WL server will store a cookie in the browser. This
          cookie identifies the IP address and port number of the WLS where
          the request was executed (the Primary), and if it is a clustered
          configuation with session replication enable, also a Secondary
          server.
          The next time you make a request to iPlanet (or Apache), wlproxy
          looks at the cookie and directs you to the same WL server - so
          you won't see any load balancing.
          If you quit out of all your browsers, then start a new browser,
          and access it again, you won't have a WL cookie, and the request
          will get load balanced to one of the WL servers.
          Mike
          Patrizia MB <[email protected]> wrote:
          >Thanks Mike,
          >but I've some problems in verifying what you've asserted.
          >In my obj.conf I've put
          >
          > <Object name="wl" ppath="*/servlet/*">
          >
          > Service fn="wl-proxy" WebLogicCluster="10.0.0.3:7060,10.0.0.8:7060"
          >DebugConfigInfo="ON" Debug="ON"
          >
          > </Object>
          >
          >Note that I have 2 NOT-Clustered WLS instances behind
          >NES: I used
          >the "WebLogicCluster" property in the obj.conf only because
          >this
          >is the only way - as far as I know ! - to specify multiple
          >nodes to the
          >proxy.
          >
          >
          >With your suggestion, accessing the URL
          >"http://<your-nes-server>/?__WebLogicBridgeConfigInfo"
          >I can see this:
          > Query String: '__WebLogicBridgeConfig'
          > This entry is cluster aware.
          > ClusterID (from obj.conf): "10.0.0.3:7060,10.0.0.8:7060"
          > WebLogic Cluster List:
          > 1.Host: '10.0.0.8' Port: 7060 Primary
          > General Server List:
          > 1.Host: '10.0.0.3' Port: 7060
          > 2.Host: '10.0.0.8' Port: 7060
          >
          >
          >
          >
          >
          >In spite of that, there's no load-balancing!
          >I checked the 2 access files on the 2 nodes, and I see
          >that all my
          >requests go to the same server 10.0.0.8.
          >Why?
          >According to which logic 10.0.0.8 has been defined the
          >Primary? (They
          >are both Administration Servers)
          >
          >I hope you'll answer to my questions!
          >
          >TIA
          >
          >Patrizia
          >
          >
          >
          >
          >
          >
          >Mike Reiche wrote:
          >
          >> The wlproxy for NES will round-robin requests to multiple
          >WL
          >> servers if they are clustered or not clustered.
          >>
          >> You can get some additional information by adding the
          >property
          >> DebugConfigInfo=ON to the WL configuration in obj.conf
          >then
          >> hitting the URL...
          >> http://<your-nes-server>/?__WebLogicBridgeConfigInfo
          >>
          >> Check the WL NSAPI doc.
          >>
          >> Mike
          >>
          >> Monteforte Patrizia <[email protected]>
          >wrote:
          >> >Hi boys!
          >> >I have a question for you: my NES proxy server can
          >realize
          >> >a load
          >> >balancing between 2 weblogic 6.0 servers that are
          >NOT
          >> >IN A CLUSTER?
          >> >I've done some tests configuring the obj.conf like
          >the
          >> >2 weblogic
          >> >servers were in cluster, but I dont' understand if
          >it
          >> >works correctly.
          >> >May be I ask too much ...
          >> >
          >> >Thanks
          >> >
          >> >Patrizia
          >> >
          >

Using StoneBeat WebCluster load balancing with WebLogic

          Hi,
          I have done some testing of WebLogic Server with my company's StoneBeat WebCluster
          distributed load balancing software. This might be one more option to consider
          as a load balancing solution for WLS. It is advanced in the sense that load balancing
          is really dynamic, there are no single-points of failure (distributed architecture)
          and there is a very good, configurable test subsystem that runs on each cluster
          node to check for overload situations, HW/OS failures, ...
          In the initial testing, the WebCluster load balancing works with WebLogic replication,
          although there are some cases that need mroe consideration (please see below).
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          - P: 2, S: 3 (SessionServlet = 1)
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          - 2: online - P: 2, S: ? (SessionServlet = 3, WebCluster redistributes the load
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          - 2: offline
          - P: 3, S: 1 (__SessionServlet = 1__) NB!
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          from the secondary (node 1) and not from the primary (node 3). After a while (5-6
          minutes), node 3 tries to update the replica on node 1. Node 1 considers this
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          secondary for 16... (the replicated object). Then there's a message (still on
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          From the WLS6 documentation (under the discussion of using replication with external
          HW load balancing solutions) I thought that this case would have been handled:
          - it is stated that after the failure of a node, if the HWLB box sends the next
          request to a node where there is no replica, WLS is able to retrieve the replica
          - to be fair, this is what happens: when node 2 came back online, it retrieved
          the replica from node 1 (the secondary) - I suppose that there is an assumption
          that if a request arrives to a node without a replica, the primary __must have
          failed__
          Is there any way to get around this problem?
          Admittedly, WebCluster has a problem in that the stickyness of connections is
          not perfect: - when a node goes online, a connection that was correctly persisted
          (based on either source-ip or source-network address) may be moved to a new node
          since the load is redistributed. Our load balancing is very dynamic, but doesn't
          maintain a list of who is connected to which node when resistribution takes place
          Regards,
          Frank Olsen
          Stonesoft


Rick,
You may want to look at the Alteon and F5 configuration we have on edocs.
Take a look at the following URLs for a possible solution
http://edocs.bea.com/wls/docs61/cluster/alteon.html#591902
http://edocs.bea.com/wls/docs61/cluster/bigip.html#591902
Chuck Nelson
DRE
BEA Technical Support

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We use T3 for Java client to application server communication (Weblogic Server
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Rick,
You may want to look at the Alteon and F5 configuration we have on edocs.
Take a look at the following URLs for a possible solution
http://edocs.bea.com/wls/docs61/cluster/alteon.html#591902
http://edocs.bea.com/wls/docs61/cluster/bigip.html#591902
Chuck Nelson
DRE
BEA Technical Support

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We are using rwo weblogic 6.1 servers A and B behind a load balancer with a DNS name (eg. www.loadbalancer.com). We are using T3 for Java client to application server communication. The client creates the Initial context with the load balancer url,creates remote objects using the context, closes the initial context and then tries to get a new initial Context. What we noticed is even though the client closes the first context and gets a new one, the client is always hooked on to only one server making load balancing ineffective. Is there a T3 configuration to release the connection when we close the context ? The documentation says only one T3 is established per client JVM.

Rick,
You may want to look at the Alteon and F5 configuration we have on edocs.
Take a look at the following URLs for a possible solution
http://edocs.bea.com/wls/docs61/cluster/alteon.html#591902
http://edocs.bea.com/wls/docs61/cluster/bigip.html#591902
Chuck Nelson
DRE
BEA Technical Support

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Hi All,
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Hi,
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http://docs.oracle.com/cd/E14571_01/web.1111/e16435/oracle.htm
http://docs.oracle.com/cd/E15586_01/web.1111/e10144/intro_ohs.htm
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Hi Team,
As per the Oracle WLS documentation,web logic cluster provides load balancing.
I want to know,how it can achieved in web logic server for clusters.
Any suggestions regarding the query is appreciated.
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Arun K M

You may install the the Oracle HTTP server and use it as a load balancer.

RFC connection (SM59) fails with load balancing enabled.

Hello All,
We have an RFC connection setup between two SAP systems. The RFC connection works fine if it points to the destination system. But if we enable load balancing, the connection fails with this error:
ERROR                partner not reached (host <hostname>, service sapms<SID>)
LOCATION             SAP-Server <source system> on host <host name of source> (wp 1)
DETAIL               NiPConnect2
CALL                 SO_ERROR
COMPONENT            NI (network interface)
COUNTER              3027
ERROR TEXT           Connection refused
ERROR NUMBER         79
MODULE               niuxi.c
LINE                 1069
RETURN CODE          -10
SUBRC                    0
RELEASE              46D
TIME                 Mon Aug 18 18:33:30 2008
VERSION              34
I've checked the /etc/services file, the following entries exist
sapms<SID> 3606/tcp
sapms<SID>s 3600/tcp
lstst at the source system works fine
lgtst -H <target host name> -S sapms<SID>
niping at the target system has a problem
> niping -c -S 3606
Mon Aug 18 10:23:14 2008
connect to server o.k.
ERROR => NiTClientLoop: NiTReadLoop (rc=-6) [nixxtst.cpp 2629]
ERROR       connection to partner broken
TIME        Mon Aug 18 10:23:14 2008
RELEASE     640
COMPONENT   NI (network interface)
VERSION     37
RC          -6
MODULE      niuxi.c
LINE        905
DETAIL      NiPRead (0.0.0.0/0, hdl 1)
SYSTEM CALL recv
COUNTER     1
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regards,
Roshni

Hi,
I think you have added wrong port entry in services file.
The entry of sap servers in services file for load balancing are
sapms<SID> 36<instance number>/tcp
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Also add the entry of all SAP servers in your hosts file.
<IP> <HOSTNAME>

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Flash Media Server does not come bundled with a load balancer. In theory, one deploys FMS in an edge/origin configuration like this
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Hi,
I have been using GlassFish v2 for a year now developing EAR applications very happily. Now, I am starting to think of clustering due to the large amount of webpages of our new website (approx 600.000).
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http://edocs.bea.com/wls/docs92/cluster/load_balancing.html#wp1026940
http://e-docs.bea.com/wls/docs92/cluster/planning.html#wp1088950
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Load Balancing and WLS primary server offset

I've got a load balancer in front of my WLS cluster, and I'm trying to
          set up load balancing based on WLS clustering. What I need to know to
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          determining which machine within the cluster to direct to.
          Any idea how I can get this information?
          thanks,
          cfraser


Chris Fraser wrote:
          > The proxy/plug-in solution sounds pretty cool, but I've got a high speed
          > Alteon Load Balancer already set up. I would prefer to use that as the load
          > balancer to the WL cluster rather than pay to bring another WLS online to do
          > pretty much what the load balancer, that I already own, can do. I know that
          > going this route means that we're probably not going to be able to do things
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          you though that other types of persistence mechanism's we support are slower
          compared to in memory session replication.
          > Are there any plans to work with an Alteon or a Foundry to have their Load
          > Balancers act as the front end to a WLS cluster?
          Currently none. We are taking steps to make the plugin's and cluster more
          robust, we currently don't have any plans to work with other 3rd party vendors.
          > For us it would be ideal, because we wouldn't have to support another piece of
          > software, we would just
          > have to support the hardware based Alteon, which can handle thousands of
          > transactions per second.
          > I understand that the primary and secondary server information is available
          > in the sessionID, I'm just not quite sure how to extract it.
          This information is saved in the cookie. But I wouldn't count that, as we
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          I don't quite get what you mean here.
          Hope this helps.
          - Prasad
          > thanks for the help,
          > cfraser
          > ----------
          > C h r i s t o p h e r A . F r a s e r
          > Director, Technology
          > macroplay.com, Inc.
          > [email protected]
          >
          > Viresh Garg wrote:
          >
          > > You should be using
          > > -- NES +NSAPI Plugin
          > > -- IIS + ISAPI Plugin
          > > -- WEblogic server acting as proxy
          > > -- Apache +Apache Plugin ( only in Denali)
          > >
          > > front-ending your Weblogic cluster
          > >
          > > These proxies/plug-ins are smart to do a lot of things like:
          > >
          > > -- Load balancing in weblogic cluster
          > > -- Adding/deleting servers dynamically in cluster when the servers
          > > join/leave Weblogic cluster
          > > -- failover to secondary when primary dies.
          > >
          > > As far as the information about primary and secondary is concerned it is
          > > available in session ID.
          > >
          > > --Viresh Garg
          > >
          > > Chris Fraser wrote:
          > >
          > > > I've got a load balancer in front of my WLS cluster, and I'm trying to
          > > > set up load balancing based on WLS clustering. What I need to know to
          > > > do this is the offset within the cookie that's responsible for
          > > > determining which machine within the cluster to direct to.
          > > >
          > > > Any idea how I can get this information?
          > > >
          > > > thanks,
          > > > cfraser

IIS 6 fails to load balance to weblogic cluster

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