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# tar –tvjf oracle-bak.tar.bz2

The –j option causes tar to use bzip2 compression and results in a smaller

archive. If you prefer to have an even smaller archive, you can back up a subset

of the files. Not all files in /etc are required to restore your Oracle environment.

Review the Re-Create the Oracle Environment section of this document to

determine the minimum set of files and directories that you must restore.

This document describes files required to restore the Oracle environment. As

administrator, you might need to preserve other system configuration files, such

as /etc/hosts, /etc/fstab, and /etc/X11/XF86Config. You might also find it useful

to save the output of the following commands, in case you need to recover your

system:

$ /bin/rpm –qa

# /sbin/fdisk –l

$ /sbin/lsmod

$ /sbin/sysctl –a

$ /sbin/ifconfig –a

$ /sbin/chkconfig --list

# /usr/bin/raw -qa

3. Back Up System Directories

Perform a backup of the system directories, including /, /bin, /boot, /dev, /etc,

/mnt, /lib, /root, /sbin, /usr, and /var. This is necessary in case you need to restore

your RHAS2.1 installation for some reason. If you store important files in /misc,

/opt, or other directories, back them up too. Do not back up /proc, as it is

pseudo-filesystem.

4. Back Up the Oracle Directories

If you have installed the Oracle base directories, Oracle inventory directory,

Oracle home, or CRS home in system directories, you must back them up

because they will be overwritten by the RHEL3 installation. As a precaution,

you should back up these directories even if they are not in system directories.

5. Perform a Clean Install of RHEL 3.0

Install RHEL3 as described in Red Hat Enterprise Linux 3: Installation Guide

for x86, Itanium, AMD64, and Intel Extended Memory 64 Technology (Intel

EM64T ). On Oracle Real Application Clusters (RAC), perform the upgrade to

RHEL3 on all nodes at the same time.

Apply all recommended patches to RHEL3. If you plan to run RAC, you must

apply Update 2 (Q2 2004) or a later update. For information about RHEL3

updates, see:

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Red Hat ENTERPRISE LINUX 3 - FOR X86-ITANIUMTM-AMD64 AND INTEL EXTENDED MEMORY 64 TECHNOLO Manual de usuario Pagina 6