Register for Apps DBA Training
For Apps DBA Beginner's
  • Start From Here
  • Order of Apps Study
  • 11i Software
  • Apps Architecture
  • Install Apps 11i
  • Install Apps 11i Part II
  • Startup/Shutdown
  • Request Flow in Apps
  • Various TOP's
  • Cloning Basics
  • Cloning I
  • Cloning II
  • Autoconfig Basics
  • Autoconfig Config File
  • Template Files in Autoconfig
  • Discoverer Overview
  • Workflow Mailer in Apps
  • Printing Overview
  • Configuring Printers
  • Pasta Printing
  • Performance Overview
  • Install 10g Application Server
  • Apps DBA Certification
  • Common DBA Topics
  • Scared of RAC ?
  • Install RAC on your laptop part I
  • Step by Step build RAC part II
  • Step by Step install RAC using VMWare part III
  • Install Oracle RAC Database part IV
  • oraInventory Basics
  • Install Database
  • Upgarde DB to
  • Fusion
  • Is Fusion a conFusion ?
  • Fusion Middleware Overview I
  • Fusion Middleware Overview II
  • Application Integration Architecture
  • SOA Install Part I
  • SOA Install Part II
  • SOA Install Part III
  • Install BPEL Process Manager
  • Apps Integration OID/SSO
  • Management Qs for Apps Integration with SSO/OID
  • 25 things your DBA should know for Apps/SSO integration
  • Identity Management
  • COREid Overview
  • Oracle COREid or Idm & Access Mgmt overview
  • Installing Access Manager 10.1.4
  • WebGate request flow
  • Identity Manager Architecture
  • Installing Identity Manager
  • OAS-SSO Overview
  • OID Overview
  • OID Basics II
  • OID Cluster
  • OID Integration with Other LDAP Servers overview
  • Integrate OID with AD I
  • OID Replication Overview
  • Multi Master OID Replication
  • Migrate OID/SSO to new Host
  • Apps R 12
  • Socket or Servlet in R12
  • Startup/Shutdown Scripts in R12
  • Unified APPL_TOP
  • Apps R 12.0.1
  • Difference between 11i & R12 Technical
  • Prepare for R12 Installation
  • Install VMWare on Windows for Linux Install
  • Install Linux for Apps R12 Install
  • Install Apps R12 on Linux Virtual Machine
  • R12 Upgrade & database
  • R12 Fils System Changes
  • R12 Release Date
  • 10g Application Server
  • 10g AS Overview
  • Installing 10g AS
  • Start/Stop 10g AS
  • Web Cache Basics
  • Single Sign-On Overview
  • OID Overview
  • Cloning 10g AS
  • 10g AS Middle tier Cloning & Overview
  • OID Cluster Imp. Points
  • CPU Patch, Infra Tier
  • CPU Patch, Middle Tier
  • AS Guard / DR Overview
  • Oracle Apps 11i
  • My Site
  • Apps DBA Scripts
  • Apps DBA Interview Q's
  • 11i JVM's
  • Apps Training in India
  • 11i Health Check
  • Good Metalink Notes
  • About Me  
  • For Advanced Apps DBA
  • URL Firewall in DMZ Setup
  • Upgrade Apps to
  • Load Balancer Overview
  • Load Balancer Config
  • HTTP layer Load balancing in Apps 11i
  • Dataguard Overview
  • Configure Dataguard / Standby database
  • Standby Site for Apps 11i
  • How to change Hostname on Apps Instance
  • SSL Overview in Apps
  • Configure SSL to Web Server
  • Key Points for SSL in Apps
  • Reduce Patch Timing
  • Reduce Patch Timing II
  • Shared APPL_TOP Overview
  • Configure Shared APPL_TOP
  • 11i Database Upgrade I
  • 11i Database Upgrade II
  • Change Session TimeOut
  • Patching
  • Apps Patch Basics
  • Apps Patch Basics II
  • Apply Apps Patch
  • CPU Overview
  • Steps to Apply CPU Patch
  • CPU Patch on Infra Tier
  • CPU Patch on AS Middle Tier
  • Troubleshooting
  • Web Server TS Part I
  • Web Server TS Part II
  • CM Troubleshooting
  • 10g Discoverer with Apps
  • Discoverer Bascis in Apps
  • Discoverer 10g Upgarde Basics
  • Discoverer 10g Configuration Steps with 11i
  • Collaboration Suite
  • Collaboration Suite
  • Calendar Overview
  • Sync Calendar from Mobile I
  • Sync Calendar from Mobile II
  • OCS Mail Architecture
  • Apex / HTMLDB
  • Install Apex 2.2
  • Apex with SSO part I
  • Apex with SSO part II
  • SSO Authentication Schemes
  • Certification
  • Possible Certifications for DBA
  • Apps DBA Certification
  • 1Z0-311-OCA-10g OAS Overview
  • 1z0-312-OCP-10g OAS Overview
  • 1z0-312 - Managing Customization and Topology
  • 1z0-312 - Cloning and Staging OAS
  • Apps DBA Jobs
  • Working / Apps DBA in UK
  • Oracle Recruiting Apps DBA's
  • Apps DBA Jobs Updated Regularly
  • Apps Job at Satyam
  • Useful Links
  • Good Metalink Notes
  • petefinnigan's Oracle Security
  • Linux Basics
  • Atul Mehta's Oracle Links
  • Others
  • Apps DBA Training Institute
  • 1 Year Journey of this Blog
  • How To ?
  • Change APPS Password
  • Preserve Customizations
  • Blog Roll
    Apps / E-Business Suite
  • Steven Chan Apps
  • Anil Passi Technical
  • Fadi Apps DBA
  • Senthil Apps DBA
  • Bas Klaassen EBS DBA
  • Sam Apps DBA
  • Black Geek Apps DBA
  • Bandari Apps
  • Vikram ERP Architect
  • OraBiz
  • Eric Core DBA
  • SOA
  • Navdeep Saini Apps DBA
  • tugdualgrall Web Services
  • Mohan Dutt's Apps Certification
  • Nishant Kaushik's IdM
  • Nulli Blog, OAM
  • Identity Musing
  • Identity nd Access Management
    Core DBA
  • Vidya Bala DBA
  • Sabdar DBA
    Data Management
  • Ivan Pellegrin Data Management

  • We have moved to kindly check http://onlineAppsDBA.comin future
    Hardware Load balancing at HTTP Layer in Apps Contd..
    Monday, September 11, 2006
    Register for R12 upgrade
    If you are accessing this page directly without reading previous post about load balancer & broad level steps of configuring load balancer in Apps then first check

    Overview of Load Balancer
    Broad level Steps for Load Balancer

    After configuring Load Balancer in Oracle Applications 11i you as Apps DBA need to apply three prereq. patches

    Patch 3175852 - This patch will give tags in CONTEXT file ( xml file) required to configure load balancer , I'll discuss on these tags in this post later
    Patch 3077386 - This is for logout issue which is not function properly
    Patch 3209878 - Only if you are using Oracle Configurator

    If you are on apps 11.5.10 or above , these patches are already included .

    After these patches you need to clone from existing tier to one more middle tier ( If existing middle tier include Concurrent Manager & Reports Node , don't configure target instance for CM or Reports as I suppose you don't want to configure PCP more coming on PCP in future posts you just need load balancing on HTTP Layer). I suppose you are already aware that while running steps you can define what services you want to run on particular nodes

    At this stage your node1 & node2 should be similar & users should be able to login from node1 or node2 ( http://node1.domain:port and http://node2.domain:port resp.) with their own hostnames . If this is working then lets proceed with Load balancer configuration.

    Change your context file (xml file ) under $APPL_TOP/admin via context editor or OAM (Oracle Application Manager )
    Before changing lets understand what variables you need to change & what each parameter mean

    webentryhost oa_var="s_webentryhost" : Change this from node1 to loadbalancer name in our case its lbr
    webentrydomain oa_var="s_webentrydomain" : Change it to load balancer domain name
    webentryurlprotocol oa_var="s_webentryurlprotocol" : Change it to protocol you use to access application http or https
    activewebport oa_var="s_active_webport" : Change it to port on which load balancer is listening . Lets assume your node1 & node2 webserver is listening on port 8000 and you want URL like that means your load balancer is listening on default http port i.e. 80 so define here s_active_webport as 80

    After changing these parameters on node1 , run autoconfig after changing above parameters in context file. Start your applications on Node1 only (shutdown services on node2 which is not yet configured for loadbalancer)

    Try to access applications via load balancer , if you can good job (You still have to configure second node).


    If you can't nothing to worry (It happens) How to figure out problem & where to check for issues , wait for my updates till tomorrow ....

    Tip: Don't forget to take backup before making all these changes ;-)

    We have moved to

    kindly check in future

    add to  ¦  digg thisDigg This  ¦  My Yahoo!My Yahoo  ¦  RedditReddit  ¦  add to BlinkListBlinkList   ¦  Furl ItFurl It  ¦  Email This Email This  ¦     Leave Your Comments
    posted by Atul Kumar @ 4:52 PM  
    • At 4:11 PM, Blogger fhasweh said…

      dear atul,
      my users are able login from node1 or node2 ( http://node1.domain:port and http://node2.domain:port
      but from node2 when we click on responsibley it alwasy go to node1 is this correct? if yes then there is no HA concept here becase if node1 is down no one will be able to use the application.


    • At 4:18 PM, Blogger Atul Kumar said…

      Do let me know how you have configured ? Do you have hardware load balancing with session persistance ( Sticky Bit )

      I there any Profile option configuration at Server,Site or responsibility level.

      I suppose by default all jserv on node1 & nod2 is load balanced .
      Is it always from node2 requests going to nod1 ?

      What if you shutdown node1 ( can you still access applications via nod2 ? )
      If not do let me know how you have configured load balancing in Apps .


    • At 9:55 AM, Blogger Atul Kumar said…

      Issue is because profile option "ICX Forms Launcher..." at site level is set to Node1 thats why all hists from node2 for forms session are going to node1 .

      You can set "ICX form launcher..." profile level option at server level at server node2 pointing to Node2 . That way forms session from node2 will aunch from node2

      Do let me know if this doesn't fix your problem


    Post a Comment
    << Home
    About Me

    Name: Atul Kumar
    Home: London, United Kingdom

    About Me: I am Independent Oracle consultant. If you wish to hire me on Contract or to Quote on project basis contact me at
    atul @

    See my complete profile

    View Atul Kumar's profile on LinkedIn

    E-mail Subscription

    Enter your email address:

    Delivered by FeedBurner

    Only search this Blog
  • Advanced Topics
  • Application Server
  • Apex / HTMLDB
  • Apps 11i
  • Apps R12
  • Autoconfig
  • Basics
  • Certification
  • Cloning
  • Discoverer
  • Fusion
  • OID
  • Patching
  • Printer
  • Single Sign-On
  • Useful Sites & Forum
  • Previous Post
    Add On

    Add to Technorati Favorites



    Add to Google


    Add to My AOL


    Subscribe in Bloglines


    Subscribe in NewsGator Online

    Powered by

    Hits Since 30, Jul 06

    Blog Counter

    Technology Blogs - Blog Top Sites
    Copyright © 2006 All rights reserved Presented by Atul Kumar