Continuing perparing OEL5.5 for EBS R12 installation

I still did not finish preparing Oracle Enterprise Linux 5.5 for installation of EBS R12. Two weeks ago I made some progress but had no time to blog it. Here a short notice from my activities while continuing 'Oracle Applications Installation and Upgrade Notes Release 12 (12.1.1) for Linux x86-64 [ID 761566.1]':

==== > JavaSE (JDK) 6
I spent quite some time on downloading and installing JDK 6 for OEL 5.5, but at the end collegea Arnoud Roth told me that this was not necessary. This will be installed when installing EBS!

==== Patching Oracle Applications
Here the manual was very confusing. It stated 'Note: When querying for Oracle Applications Release 12 patches on My Oracle Support and selecting Linux x86-64 in the Platform dropdown list, it will re-direct you to a Linux x86 patch. This patch may be applied to both 32-bit and 64-bit Linux operating systems.' I looked at Oracle Support for a patch but could not find one.
Finally I posted a message in the E-Business Suite forum 'Technology - LCM: R12 Install/Upgrade'. Helios answered this this is just a note that when a patch is needed I have to think about the version and I don't need to care about this NOTE for my installation. Thanks Helios.

==== Kernel Settings
Added the following lines to /etc/sysctl.conf
# lines added to /etc/sysctl.conf for installation of EBS R12
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
Added the following lines to /etc/resolv.conf
options attempts:5
options timeout:15

==== Verifying Host Names
/etc/hosts file is Ok
/etc/sysconfig/network file is Ok
No file /etc/sysconfig/networking/profiles/default/network (is Ok)

==== Modifying the Number of Open File Descriptors
Added the following lines to /etc/security/limits.conf
# Added for installation of EBS R12
* hard nofile 65535
* soft nofile 4096
* hard nproc 16384
* soft nproc 2047

REBOOT!

==== OS Library Patch for Oracle HTTP Server
Looking for patch 6078836
On My support look for Platform is Linux x86 (you won’t find it using platform Linux x86-64)

Download patch. Unzip the file.
cp libdb.so.2 /usr/lib

==== Link to Motif library in Oracle Application Server 10.1.2

TO DO