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Install Oracle EBS 12 on a PC with Centos Linux


My Dell desktop:

[root@erp RPMs]# cat /proc/cpuinfo
model name      : Intel(R) Pentium(R) 4 CPU 2.80GHz
cpu MHz         : 2793.022
cache size      : 512 KB

[root@erp RPMs]# cat /proc/meminfo
MemTotal:      2073404 kB

Operating System

Download Centos Linux, and install the Linux operating system.

Kernel Version

Download kernel-smp-2.6.9-42.0.3.EL.i686.rpm and apply with:

$ rpm -ivh  kernel-smp-2.6.9-42.0.3.EL.i686.rpm

The kernel should look like this:

root@erp RPMs]# uname -a
Linux 2.6.9-42.0.3.ELsmp #1 SMP Thu Oct 5 15:04:03 CDT 2006 i686 i686   
i386 GNU/Linux

Required RPMS

  1. glibc-2.3.4-2.25
  2. glibc-common-2.3.4-2.13
  3. binutils-
  4. compat-libstdc++-296-2.96-132.7.2
  5. gcc-java-3.4.4-2
  6. gcc-c++-3.4.4-2
  7. compat-gcc-32-3.2.3-47.3
  8. libgcc-3.4.4-2
  9. libstdc++-3.4.4-2
  10. openmotif-2.2.3-9.RHEL4.1
  11. pdksh-5.2.14-30.3
  12. setarch-1.6-1
  13. make-3.80-5
  14. gnome-libs-
  15. sysstat-5.0.5-1
  16. compat-db-4.1.25-9
  17. control-center-2.8.0-12.rhel4.2
  18. xscreensaver-4.18-5.rhel4.9
  19. libaio-0.3.103-3
  20. libaio-devel-0.3.103-3


Before beginning the installation, you must confirm that you have these utilities:

  • ar
  • gcc
  • g++
  • ld
  • ksh
  • make
  • X Display Server (VNC)

To check if these are available, use which; for example: which ar.

Kernel Settings

Make sure that the following kernel setting are in effect. Update /etc/sysctl with the following parameters, and then run sysctl -p.

kernel.semmsl = 256
kernel.semmns = 32000
kernel.semopm = 100
kernel.semmni = 142
kernel.shmall = 2097152
kernel.shmmax = 2147483648
kernel.shmmni = 4096
kernel.msgmax = 8192
kernel.msgmnb = 65535
kernel.msgmni = 2878
fs.file-max = 65536
net.ipv4.ip_local_port_range = 102465000
net.core.rmem_default = 262144
net.core.rmem_max = 262144
net.core.wmem_default = 262144
net.core.wmem_max = 262144

Number of Open File Descriptors

Modify /etc/security/limits.conf for “hard” and “soft” parameters.

hard nofile  65535
soft nofile 4096
hard nproc 16384
soft nproc 2047

Create Users and Groups

groupadd dba
useradd -g dba oracle

I used the oracle user as the owner of both APPS and database.

Downloading 12i Software

Download 12i (12.0.4) from

Here are the disk details required.

  • Space required for download 12i: 34.1GB
  • Space required for the actual install (Fresh Database): 65GB
  • Space required for the unzipped 12i Software: 40GB

This is what I did. I had two disks on the PC—40GB and 250GB, and I had a Lacie 500GB Firewire Drive. I used the 40GB for the dual setup (Windows and Linux), and mounted the 250GB as /250G for the 12i software, using an ext2 filesystem. I mounted the Lacie Drive as /500GB for the actual install.

Begin the installation

Once you have unzipped the 12i Software, make sure the following is set up . . .

  1. oracle:dba is the owner of the directory where you are installing
  2. oracle:dba owns the software directory

. . . and then you can start the installation.

As oracle:dba, start a vnc server:

$ vncserver :2

Logmin to vncviewer:

$ vncviewer :2

Try running xclock/code> If you get a clock, you are good to start. Navigate to the staging area.

$ /250G/startCD/Disk1/rapidwiz $ ./rapidwiz

After installation

Congratulations, you now have your 12i instance. Tempted to log in? Why not!

You will require the password for SYSADMIN. Oracle never asked us for that, so I had to wait, and ask here and there. And then this worked: sysadmin. Yes, that’s the password for SYSADMIN. And the password for apps is apps. So log in and scroll through the new windows of your own 12i.


You may wonder why I used oracle:dba for both apps and database. I did so because I intended to used to this machine for other set-ups too—10g, 11g, OID, etc., and so I wanted to keep it simple as the 12i is on Firewire. It will be mounted every time machine boots, so it’s easy to do this:

$ chown -R oracle:dba /500GB

Create a env file for 12i, and log in as oracle. Edit .12i.env and just add the following two lines:

. /500GB/12i/tech_st/10.2.0/PROD_erp.env

Now invoke the env file and play around with the file systems.

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