? Oracle E-Business Suite R12.2? Overview
Oracle E-Business Suite (EBS) Release 12.2 introduces a dual file system architecture with online patching, enabling high availability, modular maintenance, and horizontal scalability. Multi-node configurations help enterprises improve application responsiveness, ensure business continuity, and support failover strategies. The add-node and remove-node operations must be executed with strict adherence to Oracle standards to ensure service integrity and lifecycle manageability.
Key benefits include:
Consistent AutoConfig and context-driven configuration management
Shared application tier support via NFS or clustered storage
Dual file system support for run/patch file systems
Centralized and distributed load balancing
Full service enablement (OHS, WebLogic, NodeManager, Forms, Concurrent Managers)
Oracle officially documents this process via My Oracle Support (MOS) and in Rapid Clone tools.
? Step-by-Step: Adding a Secondary Node to R12.2? Step 1: Prepare files from Primary Application Tier to send to another new server node.
⛶# Start Admin Server on RUN file system
cd $ADMIN_SCRIPTS_HOME
./adadminsrvctl.sh start


# Start Admin Server on PATCH file system
cd $ADMIN_SCRIPTS_HOME
./adadminsrvctl.sh start forcepatchfs


# Execute Preclone on Primary Node (appsTier)
cd $ADMIN_SCRIPTS_HOME
perl adpreclone.pl appsTier*? Step 2: Create Tar Archive and Transfer
*
⛶# Navigate to FS1 and compress application tier
cd /u01/appltier/R12PRD/fs1/

nohup tar -czvf EBSapps$(date +%m%d%y).tar.gz EBSapps

# Secure copy tar file generated to new node
scp EBSapps$(date +%m%d%y).tar.gz user@newnode:/u01/appltier/R12PRD/fs1/*? Step 3: Unpack and Prepare the New Node
*
⛶# Uncompress the application tier structure
cd /u01/appltier/R12PRD/fs1/

nohup tar -xzvf EBSapps$(date +%m%d%y).tar.gz
Note: Ensure shared mount points, user groups, and directory structures are aligned across nodes. Examples:

/usr/tmp
/u01/oracle/ebshml/appltier/tmp/shared
/fs_shared/APPLPTMP? Step 4: Prepare Pairs File (Node-Specific)
⛶Example values for /u01/appltier/R12PRD/pairsfiles/pairsfile.txt:

[Base]
s_base=/u01/appltier/R12PRD
s_current_base=/u01/appltier/R12PRD/fs1
s_other_base=/u01/appltier/R12PRD/fs2
s_ne_base=/u01/appltier/R12PRD/fs_ne

[General]
s_applptmp=/u01/appltier/R12PRD/tmp/shared
s_appsgroup=oinstall
s_appsuser=applprd
s_dbuser=oracle
s_dbgroup=dba
s_dbdomain=your_host_domain.com
s_at=/u01/appltier/R12PRD/fs1/EBSapps/appl
s_com=/u01/appltier/R12PRD/fs1/EBSapps/comn
s_tools_oh=/u01/appltier/R12PRD/fs1/EBSapps/10.1.2
s_weboh_oh=/u01/appltier/R12PRD/fs1/FMW_Home/webtier
s_fmw_home=/u01/appltier/R12PRD/fs1/FMW_Home
s_dbGlnam=R12PRD
s_dbSid=R12PRD
s_dbhost=scprd-scan
s_clonestage=/u01/appltier/R12PRD/fs1/EBSapps/comn/clone
s_dbport=1521
s_options_symlinks=Options -FollowSymLinks
s_proxyhost=
s_proxybypassdomain=your_host_domain.com
s_proxyport=
s_nonproxyhosts=
s_javamailer_imapdomainname=NoImapDomain
s_javamailer_imaphost=NoImapHost
s_javamailer_reply_to=NoReplyTo
s_javamailer_outbound_user=changeOnJavaMailerInstall
s_smtphost=ebsprdr12
s_smtpdomainname=your_host_domain.com
s_file_edition_type=run
s_port_pool=0
s_admhost=ebsprdr12
s_atName=ebsprdr12
s_shared_file_system=true
patch_s_port_pool=1

[Web Entry Point Configuration]
s_webentryurlprotocol=http
s_webentryhost=ebsprdr12
s_webentrydomain=your_host_domain.com
s_active_webport=8000
s_endUserMonitoringURL=http://ebsprdr12.your_host_domain.com:8000/oracle_smp_chronos/oracle_smp_chronos_sdk.gif
s_external_url=http://ebsprdr12.your_host_domain.com:8000
s_login_page=http://ebsprdr12.your_host_domain.com:8000/OA_HTML/AppsLocalLogin.jsp

[Instance Specific]
s_temp=/u01/appltier/R12PRD/fs1/inst/apps/R12PRD_ebsprdweb/temp
s_contextname=R12PRD_ebsprdweb
s_hostname=ebsprdweb
s_domainname=your_host_domain.com
s_cphost=ebsprdweb
s_webhost=ebsprdweb
s_config_home=/u01/appltier/R12PRD/fs1/inst/apps/R12PRD_ebsprdweb
s_inst_base=/u01/appltier/R12PRD
s_display=ebsprdweb:0.0
s_forms-c4ws_display=ebsprdweb:0.0
s_ohs_instance=EBS_web_R12PRD_OHS2
s_webport=8000
s_http_listen_parameter=8000
s_https_listen_parameter=4443

[Services To be Enabled on the Secondary Application Tier Node]
s_web_applications_status=enabled
s_web_entry_status=enabled
s_apcstatus=enabled
s_root_status=enabled
s_batch_status=enabled
s_other_service_group_status=enabled
s_adminserverstatus=disabled
s_web_admin_status=disabled*? Step 5: Clone Secondary Node
*
⛶cd /u01/appltier/R12PRD/fs1/EBSapps/comn/clone/bin

perl adcfgclone.pl component=appsTier \
pairsfile=/u01/appltier/R12PRD/pairsfiles/pairsfile.txt \
addnode=yes dualfs=yes
This will instantiate the context, register WebLogic managed servers, and start relevant services.*?️ Removing an Application Tier Node (R12.2)
*
*? Step 1: Execute adProvisionEBS
*
⛶perl $AD_TOP/patch/115/bin/adProvisionEBS.pl \
ebs-delete-node \
-contextfile=$CONTEXT_FILE \
-hostname=rnnhml01ebs03 \
-logfile=delete.log

Optionally, to delete a specific managed server:

perl $AD_TOP/patch/115/bin/adProvisionEBS.pl \
ebs-delete-managedserver \
-contextfile=$CONTEXT_FILE \
-managedsrvname=oacore_server1 \
-logfile=/tmp/oacore_server1_delete.txt*? Best Practices Considerations
*
Always take a backup before cloning or removing nodes.
Validate context files with adchkcfg.sh post-clone.
Run AutoConfig on all nodes after changes.
Sync all tier clocks via NTP.
Monitor via EBS Cloud Control or custom dashboards.
? Thank you for reading!
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