R12.2.x : How to create Autoconfig / Context File on the (RDBMS) database node ?

I was working on a project to migrate R12.2.3 database from HP UX Itanium to RedHat Linux 6.5. In the environment, database server have just the database and application server accommodates the web, oacore, weblogic, concurrent managers and so on. As part of the migration, I had to build new context file for the database on Linux.

The same process can be used when you are adding/deleting a database node to RAC for EBS environment or if you happen to create the EBS database without using Rapid Install.

1. Login to the Application Server (APPL_TOP) as APPLMGR and create appsutil.zip by running the following command:

$ perl <AD_TOP>/bin/admkappsutil.pl 

This will create appsutil.zip in <INST_TOP>/admin/out. 

2. Copy (scp/ftp) the appsutil.zip to Oracle Database Host  - ORACLE_HOME or RDBMS_ORACLE_HOME.

$ cd <RDBMS_ORACLE_HOME>/appsutil/admin
$ unzip -o appsutil.zip 

3. Install Java Runtime Environment (JRE) on the Database tier. The JRE resides in the <RDBMS_ORACLE_HOME>/appsutil/jre directory on the database tier. Use the MOS Note 'All Java SE Downloads on MOS (Doc ID 1439822.1)' to download the required JRE.

Note: Do NOT download the Java SE Development Kit (JDK). Instead, download the JRE that supports 64-bit JVM.

In my case, I downloaded p14558210_17070_Linux-x86-64.zip. I copied the zip file to $ORACLE_HOME/appsutil and unzipped the file.

•  jdk-7u7-linux-x64.rpm
•  jdk-7u7-linux-x64.tar.gz
•   jre-7u7-linux-x64.rpm
•   jre-7u7-linux-x64.tar.gz 

Untar the file and it will create the directory named jre1.7.0_07. Now rename the directory.

$ tar xvf jre-7u7-linux-x64.tar.gz 
$ mv jre1.7.0_07 jre 

4. From the ORACLE_HOME/appsutil/bin directory, create an instance-specific XML context file by executing the command:

$ adbldxml.pl appsuser=APPS appspasswd=APPSpwd 

Reference: 
Using Latest Java 6.0 Update With Oracle E-Business Suite Release 12 (Doc ID 455492.1)
Oracle E-Business Suite Release 12.2: Adding or Deleting 11gR2 Oracle RAC Nodes (Doc ID 1570554.1)
Export/Import Process for Oracle E-Business Suite Release 12.2 Database Instances Using Oracle Database 11.2 (Doc ID 1613716.1)
All Java SE Downloads on MOS (Doc ID 1439822.1)
Oracle® E-Business Suite Setup Guide - Release 12.2 (Part No. E22953-09)