Oracle Web Cache - Load Balancer Mode

Hello,
I am facing a problem related to fault tolerance in Oracle Web Cache
My environment:
2 Nodes of Oracle Application Server 10.1.3 configured in cluster.
have configured Oracle Web Cache (in LoadBalancer mode only) to simulate a BigIP load balancing above these two oc4j node. This to be used as fault tolerance so if one http request will fail the LoadBalancer will direct it to the second oc4j (its http server).
I have used the defaults recommended by Oracle documentation for configuration clustering load balancer using Oracle Web Cache and using JSESSIONID for Session binding with oc4j-type. I left all other cluster/server setting to default
Problem:
The problem is when I am shutting down one oc4j instance the Oracle Web Cache tries to keep the session with the un-available oc4j node and not direct the session to the other oc4j node.
If I choose to start a new session (loose current work) than it does work with the second (alive) oc4j node, but than where is its fault tolerance??
What do i need to do to keep working with the same session over the second oc4j node. My deployed Web App is enabled to work in cluster, using Oracle Application Server console. Here is its orion-application.xml
+<?xml version="1.0"?>+
+<orion-application xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://xmlns.oracle.com/oracleas/schema/orion-application-10_0.xsd" deployment-version="10.1.3.1.0" default-data-source="jdbc/OracleDS" component-classification="external"+
schema-major-version="10" schema-minor-version="0" >
+     <web-module id="session_rep" path="session_rep.war" />+
+     <persistence path="persistence" />+
+     <principals path="principals.xml" />+
+     <jazn provider="XML" />+
+     <log>+
+          <file path="application.log" />+
+     </log>+
+     <cluster allow-colocation="false">+
+     <replication-policy trigger="onRequestEnd" scope="modifiedAttributes"/>+
+     <flow-control-policy enabled="false" />+
+          <protocol>+
+               <peer>+
+                              <opmn-discovery/>+
+               </peer>+
+          </protocol>+
+     </cluster>+
+</orion-application>+
Will appreciate any help !

is OHS/apache deployed between web cache and your OC4J? if so, i think since OHS/apache is alive to web cache, web cache keeps routing to it.
maybe in your script, you can shutdown both OHS/apache and OC4J totgether so web cache can correctly route.

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Hi, I can't exactly answer this as am not aware of Forms. But, as such, Web Cache does a good load balancing work provided you configure it well. Probably, you should try posting this in Forms forum too.
Regards,
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I have two machines:
aimssrv.world.com and aimsrep.world.com.
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I am able to access my application at aimssrv.world.com by doing:
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aimsrep.world.com      7778                                    No
2      *      7777           Exclude Fragments      aimssrv.world.com      7778      No
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hi,
i hv recently configured webcache load-balancing for my 2 mid-tiers.I did not upgrade pre-requisite webcache upgrade patch 4569559 to my 10g rel 2 10.1.2.0.2 OAS and it still worked a bit but I do have some doubts why oracle recommends installing this patch before configuring webcache load-balancing.Have u?
btw u need to collapse all the features of webcache of caching to turn on http load-balancing.U need to add a parameter to internal.xml (LOADBALANCE ON="YES") and register origin servers of both servers with each other and map ur sites so that origin servers of both servers will cater sites of server1 and server2 at the same time.
what worked for me is i registered origin server of server1 at server2 and origin server of server2 at server1 and mapped site of server1 (http://server1:port/forms/frmservlet?config=something) to work with origin server of server2 as well at site-to-server page so that origin servers of both servers will load-balance my server1 site and vice-versa.
But still its not seamless.The initial site request was still being routed to the server which is DOWN first and not seamlessly routed to other server which is UP.Maybe webcache upgrade patch would hv done this seamlessly????
Edited by: anandk on Oct 26, 2009 6:28 PM

Forms6i Server (9iAS R1.x) loadbalancing using Oracle Web Cache

Hello,
I have read that it's possible to use Oracle Web Cache as a software load balancer between multiple Application Servers.
We are running Oracle9iAS R1.0.2.2.2a, with Forms/Reports6i servers on 2 Win2k boxes i.e our Forms6i application is deployed on two seperate boxes in two distinct locations. Users at each location, use their respective App Server url.
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Manish,
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This is something I observed a long time ago for Safari (ie: around version 1). I'm not sure this is Safari, per se, but OpenSSL that is responsible for the behavior. I'm pretty sure Chrome does this and I've seen some Linux browsers do it.
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Oracle Web Cache and OBIEE 11g

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Hi,
We`re running a couple of virtual machines with the
BIG-IP Virtual Edition in a Windows Server 2012 R2 Hyper-V cluster.
These virtual machines have had problems where traffic sent through the virtual machines doesn`t get through due to the MAC Addresses of the physical team NICs being replaced with the Mac Address from the team member actually used to transmit the
packet.
Reference:
Windows Server 2012 R2 NIC Teaming (LBFO) Deployment and Management
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@Rob Thanks, that`s useful information. Did they suggest any other solutions/workarounds? (such as LACP)
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dynamic mode to perform MAC substitution.
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Eric Siron
Altaro Hyper-V Blog
I am an independent blog contributor, not an Altaro employee. I am solely responsible for the content of my posts.

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Hi all,
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email:[email protected]

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email:[email protected]

Hi Fahad,
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Hopefully someone else may be able to provide more useful feedback.
cheers
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Oracle Portal with Oracle Web Cache

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best regards
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Portal PM, I thought you said that this solution would not work. Everyone I have heard so far has said that you cannot configure webcache to work with Portal documents. Does this work or does it not?
Read the messages below from the bottom up.
It's not possible to do that today.
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Title : re:Oracle Portal with Oracle Web Cache O/S : N/A POST: REPLY (W/QUOTE)
Author : Agus Jaelani Type : Question
Date : Feb 4, 2002 23:11 PT
please try using this configuration on http.conf
Port <webcache port>
Listen <apache listen port>
ServerName <webcache hostname>
you must running ssodatan script again.
Note :
this config only make portal work together with webcache.
Title : re:Oracle Portal with Oracle Web Cache O/S : N/A POST: REPLY (W/QUOTE)
Author : Krzysztof Jungowski Type : Question
Date : Feb 5, 2002 06:58 PT
Thanks a lot. It works.
best regards
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Rick -
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-> click documentation link on RHS
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null

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Regards,
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Hello –
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b.     Our architect have security concern as user id/password information are in the web service URL, which may prove to be an issue. Is there a way to mitigate this risk?
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Hi
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HTH

Office Web Apps Load Balancing Configuration Issue for SharePoint 2013

I have load balanced servers dedicated for Office Web Apps with name “md1xxxwfe1” and “md1xxxwfe2”
, both this servers are load balanced by CISCO Load balancer. And I have mapped Load Balancer Virutal IP with host name officeapps.jda.corp.local in the DNS records.
Things are working fine if I add new farm by using New-OfficeWebAppsFarm
with server name as internalurl in PowerShell console
as like “ -internalurl http://
md1xxxwfe1 but when I use –internalurl officeapps.jda.corp.local it is not working at all. I’m not getting what to do at this point.
I have gone through following blogs but no luck.
http://blogs.technet.com/b/meamcs/archive/2013/03/27/office-web-apps-2013-multi-servers-nlb-installation-and-deployment-for-sharepoint-2013-step-by-step-guide.aspx
http://blogs.technet.com/b/office_resource_kit/archive/2012/09/11/introducing-office-web-apps-server.aspx
http://davidlimsharepoint.blogspot.in/2013/02/installing-and-configuring-office-web.html
http://sps2013.blogspot.in/2013/09/office-web-apps-with-sharepoint-2013.html
The output of the wfe1 server is attached with this. When I open http:// /hosting/discovery in wfe1 I’m getting following result (attached
screenshot) but it should show hostname rather than server name.
Please help me
Thanks, Ram Ch

Hi Ram ,
For troubleshooting your issue, please take steps as below:
Just about any load balancing solution will work, including a server that runs the Web Server (IIS) role running Application Request Routing (ARR):Install
Application Request Routing
Install the certificate on the load balancer as described under Securing Office Web Apps Server communications by using
HTTPS.
Make sure you have configured the cluster correctly for full internet name:
Reference:
http://technet.microsoft.com/en-us/library/jj219435.aspx#loadbalancer
Thanks,
Eric
Forum Support
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support,
contact [email protected]
Eric Tao
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Oracle Web Cache - Load Balancer Mode

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