Cloning a Single-Node System To a Multi-Node System

  Introduction
 This document describes a step-by-step approach for cloning an Oracle Applications 11i which is AutoConfig enabled using Rapid Clone from one to three nodes, it includes Port Selection, Forms Server, Reports Server, Apache Server and Concurrent Processing, also all the scripts or programs which are used to startup up and shutdown all the services. The cloning word means to do a functional copy of an existing environment. Simply copying the application directories doesn’t mean that our new environment will work properly, we need to do some additional steps or tasks to have a functional environment.

CLONE – Single Server to Two Node Server
 TARGET Server – DEV

Apps Tier

devcomn

devappl

devora

TARGET Server – DEV

DB Tier

devdb

devdata

SOURCE Server – PROD

DB Tier

prodb

proddata

Apps Tier

prodcomn

prodappl
 


Some of the reasons to do a cloning are:

• To create a test environment from an existing production environment to test some patches or to reproduce any production issues.

• To keep a test environment with the most current information of a production environment.

• To move any existing environment to other servers.

In this Cloning demonstration, we will clone our single node instance "PROD" to Two-node as one node for database server and second node is for Application. That means all application services will reside on one node and database on a separate node. Our source node is ERP and target node is also ERP. And our source database node is PROD and Target database node is DEV. The TARGET directory structure of both the node is same as Source that is /d01/oracle.
 Cloning prerequisite steps:
  We should remember that the clone application system and existing Production application system must have same component versions & operating system type. And also we cannot clone from windows to linux.
  Login as Applications file user & set the environment file on source node.



su applmgr

cd /d01/oracle/prodappl
 . ./APPSORA.env

 Login to database tier as oracle user and set the environment on source node.



su oracle

cd /d01/oracle/proddb/9.2.0
 . ./PROD_erp.env 



Prepare the source system
 (a) Prepare the source system database tier for cloning
Log on to the source system as the ORACLE user and run the following commands:

$ cd $ORACLE_HOME/appsutil/scripts/PROD_erp
 .perl /adpreclone.pl dbTier 



(b) Prepare the source system application tier for cloning
  Log on to the source system as the applmgr user and run the following commands.

$ cd $COMMON_TOP/admin/scripts/PROD_erp
 $ perl adpreclone.pl appsTier 



Copy the Source Node File System
   Log on to the source system application tier nodes as the APPLMGR user.



•Shut down the application tier server processes as shown below

cd $COMMON_TOP/admin/scripts/PROD_erp
 ./adstpall.sh apps/appspassword

•Copy the following application tier directories from the source node to the target application tier node:
cd /d01/oracle

prodappl

prodcomn

prodora

scp –pr proadappl applmgr@target_server:/d01/oracle

scp –pr proadcomn applmgr@target_server:/d01/oracle

scp –pr proadora applmgr@target_server:/d01/oracle

Once copied –

- Check the ownership as required

- Rename the directory

cd /d01/oracle

mv prodappl devappl

mv prodcomn devcomn
 mv prodora devora

 Copy the database tier file system



Log on to the source system database Tier as the ORACLE user.
 •Perform a normal shutdown of the source system database
 cd $RDBMS_ORACLE_HOME/appsutil/scripts/PROD_erp

./addbctl.sh stop
 •Copy the database (DBF) files from the source to the target system

•Copy the source database ORACLE_HOME to the target system as shown below:
  cd /d01/oracle
 scp –pr proaddb oracle@target_server:/d01/oracle
scp –pr proaddata oracle@target_server:/d01/oracle
Once copied –


- Check the ownership as required
 - Rename the directory


cd /d01/oracle

mv proddb devdb

mv proddata devdata
 •Start up the source Applications system database and application tier processes



Configure the Target System
  Operating System of Target should be same as Source. Operating system should have all pre-requisite packages required for Oracle R11i before configuring the Target System. Execute the following commands to configure the target system. You will be prompted for the target system specific values (SID, Paths, Ports, etc).
  Log on to target node as oracle user and run the following command and input your values to each prompt as shown below :



$ cd /proddb/9.2.0/appsutil/clone/bin

$ perl adcfgclone.pl dbTier
 Enter APPS Password :



b. Configure the target system application tier server nodes
   Log on to the target system as the APPLMGR user and type the following commands and specify your values to each prompt as shown below.



$ cd /d01/oracle/devcomn/clone/bin

$ perl adcfgclone.pl appsTier
 Enter the APPS password



Above screenshots showing that all application services are started successfully. That means, we have done cloning successfully.
 Finishing Tasks
 Post clone steps vary from client to client, here is the basic change.

Profile Option Name Changes at Site Level after Cloning
 Site Name-> PROD, Change it to "DEV – Clone of PROD as of Dec 14 2010"

DEV – Clone of PROD as of 14-Dec-10
 Login to Oracle Apps as SYSADMIN



 Select System Administrator responsibility
 

 Profile –> System

Now Oracle Apps Instance of DEV : check it from frontend

Thanks
Srini