Installation guide

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Post-Installation OS Configuration
After the Red Hat Enterprise Linux AS operating system is installed; there are several
post-installation steps that are required to prepare your servers for OracleAS installation.
The first step is to check which version of the OS is installed (3.0 or 4.0), especially if
you did not perform the OS installation yourself. To check the OS version, use the
command:
# cat /etc/issue
It is important to install the required Red Hat update version, as listed above for Red Hat
3.0 and 4.0. If the wrong version is installed, you will need to either re-install with the
correct CD or upgrade your OS to the EXACT version listed above (DO NOT use the
Red Hat tool “uptodate” to get the latest updates). To check the update version:
# cat /etc/redhat-release
It is also necessary to check the version of OS packages installed against the list of
OracleAS requirements. To check for the version (or existence) of individual packages,
use the following command:
# rpm -q package_name
If a required package is found to be missing, it can be installed with the following
command:
# rpm -ivh package_name
If a required package is installed, but the version of the package is too low, the problem
can be resolved by locating or downloading the correct version, and upgrading with the
following command:
# rpm -ivh package_name
In some cases, Oracle requires that a 32-bit package be installed, even if you are working
with a 64-bit OS. To install 32-bit packages on a 64-bit system, you may need to use the
–force option and the --nodeps option of the rpm utility:
# rpm -ivh --force --nodeps package_name
It is important to keep in mind that if OracleAS is installed on a 64-bit Red Hat, you will
need to use a 32-bit shell emulation for installation purposes and for any subsequent
OracleAS sessions. You can place the following command in the .bash_profile
environment file for each OracleAS server user:
# linux32 bash
You should also make sure that the packages that you install match the architecture of the
OracleAS requirements. To check the architecture of an installed package:
# rpm -q package_name --queryformat "%{arch}\n" (should be i686 for Intel)
The following rpms are required (same version or higher) for Red Hat Enterprise Linux
AS/ES 3.0 x86 (32-bit):
• glibc-2.3.2-95.27
• glibc-common-2.3.2-95.27
• binutils-2.14.90.0.4-35