Perform the following pre-requisites before Installation of Oracle EBS R12...

Perform the following pre-requisites as Root User
login as: root
root@erp's Password :_____

KERNEL REQUIREMENT

# cat /etc/redhat-release
Red Hat Linux RHEL 5.4  REQUIRED PACKAGES

Oracle Enterprise Linux 5* OR Red Hat Enterprise Linux 5* (base and Advanced Platform)
Update 1 (5.1) or higher of Red Hat Enterprise Linux (RHEL) 5 is required
openmotif21-2.1.30-11.EL5.i3861
xorg-x11-libs-compat-6.8.2-1.EL.33.0.1.i386
binutils-2.17.50.0.6-6.0.1.x86_642

The following packages must be installed from the OEL 5 or RHEL 5 distribution media:

gcc-4.1.2-14.el5.x86_64
gcc-c++-4.1.2-14.el5.x86_64
glibc-2.5-18.i686 (32-bit)
glibc-2.5-18.x86_64
glibc-common-2.5-18.x86_64
glibc-devel-2.5-18.i386 (32-bit)
glibc-devel-2.5-18.x86_64
libgcc-4.1.2-14.el5.i386
libgcc-4.1.2-14.el5.x86_64
libstdc++-devel-4.1.2-14.el5.i386
libstdc++-devel-4.1.2-14.el5.x86_64
libstdc++-4.1.2-14.el5.i386
libstdc++-4.1.2-14.el5.x86_64
make-3.81-1.1.x86_64
gdbm-1.8.0-26.2.1.i386
gdbm-1.8.0-26.2.1.x86_64
libXp-1.0.0-8.1.el5.i386
libXp-1.0.0-8.1.el5.x86_64
libaio-0.3.106-3.2.i386
libaio-0.3.106-3.2.x86_64
libgomp-4.1.2-14.el5.x86_64
sysstat-7.0.0-3.el5.x86_64
util-linux-2.13-0.45.el5.x86_64
compat-libstdc++-296-2.96-138.i386
compat-libstdc++-33-3.2.3-61.i386

Additionally, the following RPMs are required for an 11gR1 Database (which is bundled with the 12.1.1 release) on the database tier:
compat-libstdc++-33-3.2.3-61.x86_64
elfutils-libelf-devel-0.125-3.el5.x86_64
elfutils-libelf-devel-static-0.125-3.el5.x86_64
libaio-devel-0.3.106-3.2.x86_64
unixODBC-2.2.11-7.1.i386
unixODBC-devel-2.2.11-7.1.i386
unixODBC-2.2.11-7.1.x86_64
unixODBC-devel-2.2.11-7.1.x86_64
kernel-headers-2.6.18-8.el5.x86_64

Note:
1: The openmotif package version must be 2.1.30 (for example, openmotif-2.2.3-10.RHEL4.5 is not supported).
2: This GNU linker (ld) version 2.17 provided by Oracle is required for relinking the modules in Advanced Planning & Scheduling (MSC, MSO, MSR)

Kernel Parameter Settings

kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.shmmax = 68719476736
kernel.shmall = 4294967296
kernel.sem = 256 32000 100 142
kernel.shmmni = 4096
kernel.msgmni = 2878
fs.file-max = 131072
net.ipv4.ip_local_port_range = 10000 65000
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 262144
 

Domain Name System (DNS) Resolver Parameters

Add or update the following entries to these minimum settings in the /etc/resolv.conf file on each server node

options attempts:5
options timeout:15

Verifying Host Names

Use the following to verify host name settings:
For Red Hat Enterprise Linux AS/ES 4 and 5:
1. Verify that the /etc/hosts file is formatted as follows:
2. 127.0.0.1 localhost.localdomain localhost
3. .
4. Verify that the /etc/sysconfig/network file is formatted as follows:
HOSTNAME=.If the
/etc/sysconfig/networking/profiles/default/network file exists, remove it.
5. If you changed any files in the previous steps, restart the system.

Modifying the Number of Open File Descriptors

Open the /etc/security/limits.conf file and change the existing values for “hard” and “soft” parameters as follows. Restart the system after making changes.
* hard nofile 65535
* soft nofile 4096
* hard nproc 16384
* soft nproc 2047

Apply Oracle HTTP Server Patch 6078836 and refer to readme file of the patch
Link the Motif Library in Oracle Application Server 10.1.2

# unlink libXtst.so.6
# ln -s /usr/X11R6/lib/libXtst.so.6.1 /usr/lib/libXtst.so.6

Regards,

Sukhwinder Singh