This paper (HOWTO) describes step-by-step installation of Oracle 10g R2 database software on RedHat Enterprise Server 3, 4, 5 and (Oracle) Enteprise Linux 4, 5. This article is useful for Centos Linux release 3, 4 and 5 and for White Box Enterprise Linux release 3 and 4. Note that Centos and White Box distributions are not certified by Oracle Corporation.
This article does not cover database creation process, and ASM Instance creation process.
This paper covers following steps:
1. Create oracle User Account
Login as root and create te user oracle which belongs to dba group.
su -
# groupadd dba
# useradd -g dba oracle
2. Setting System parameters
Edit the /etc/sysctl.conf and add following lines:
kernel.shmall = 2097152
kernel.shmmax = 2147483648
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000
net.core.rmem_default = 262144
net.core.rmem_max = 262144
net.core.wmem_default = 262144
net.core.wmem_max = 262144
Note: You need reboot system or execute "sysctl -p" command to apply above settings.
For RedHat (OEL, Centos, WBL) 3 and 4 versions: Edit the /etc/pam.d/login file and add following line:
session required /lib/security/pam_limits.so
For RedHat (OEL, Centos) 5 version: Edit the /etc/pam.d/login file and add following line:
session required pam_limits.so
Edit the /etc/security/limits.conf file and add following lines:
oracle soft nproc 2047
oracle hard nproc 16384
oracle soft nofile 1024
oracle hard nofile 65536
3. Creating oracle directories
# mkdir /opt/oracle
# mkdir /opt/oracle/102
# chown -R oracle:dba /opt/oracle
4. Setting Oracle Enviroment
Edit the /home/oracle/.bash_profile file and add following lines:
Use this settings for 32bit (x86) architecture.
ORACLE_BASE=/opt/oracle
ORACLE_HOME=$ORACLE_BASE/102
ORACLE_SID=ORCL
LD_LIBRARY_PATH=$ORACLE_HOME/lib
PATH=$PATH:$ORACLE_HOME/bin
export ORACLE_BASE ORACLE_HOME ORACLE_SID LD_LIBRARY_PATH PATH
Use this settings for 64bit (x86_64) architecture.
ORACLE_BASE=/opt/oracle
ORACLE_HOME=$ORACLE_BASE/102
ORACLE_SID=ORCL
LD_LIBRARY_PATH=$ORACLE_HOME/lib:$ORACLE_HOME/lib32
PATH=$PATH:$ORACLE_HOME/bin
export ORACLE_BASE ORACLE_HOME ORACLE_SID LD_LIBRARY_PATH PATH
Save the .bash_profile and execute following commands for load new enviroment:
cd /home/oracle
. .bash_profile
1. Download and install required .rpm packages
Some additional packages are required for succesful instalation of Oracle software.
To check wheter required packages are installed on your operating system use following command:
Note: Since RHEL 5 (OEL 5, Centos 5) pdksh package was renamed to ksh
For 32 bit (x86) Linux version:
rpm -q binutils gcc glibc glibc-headers glibc-kernheaders glibc-devel compat-libstdc++ cpp compat-gcc make compat-db compat-gcc-c++ compat-libstdc++ compat-libstdc++-devel setarch sysstat pdksh libaio libaio-devel --qf '%{name}.%{arch}\n'|sort
For 64 bit (x86_64) Linux version:
rpm -q binutils compat-db compat-libstdc++-33 glibc glibc-devel glibc-headers gcc gcc-c++ libstdc++ cpp make libaio ksh elfutils-libelf sysstat libaio libaio-devel setarch --qf '%{name}.%{arch}\n'|sort
Required packages for 32bit (x86) architecture:
binutils.i386
compat-gcc-7.3-2.96.128.i386
compat-gcc-c++-7.3-2.96.128.i386
compat-libstdc++-7.3-2.96.128.i386
compat-libstdc++-devel-7.3-2.96.128.i386
cpp.i386
gcc.i386
gcc-c++.i386
glibc.i386
glibc-common.i386
glibc-devel.i386
glibc-headers.i386
glibc-kernheaders.i386
libstdc++.i386
libstdc++-devel.i386
libaio
libai-devel.i386
pdksh.i386
setarch.i386
sysstat.i386
Required packages for 64bit (x86_64) architecture:
binutils.x86_64
compat-db.x86_64
compat-libstdc++-33.i386
compat-libstdc++-33.x86_64
cpp.x86_64
elfutils-libelf.i386
elfutils-libelf.x86_64
gcc-c++.x86_64
gcc.x86_64
glibc-devel.i386
glibc-devel.x86_64
glibc-headers.x86_64
glibc.i686
glibc.x86_64
ksh.x86_64
libaio-devel.i386
libaio-devel.x86_64
libaio.i386
libaio.i386
libaio.x86_64
libaio.x86_64
libstdc++.i386
libstdc++.x86_64
make.x86_64
setarch.x86_64
sysstat.x86_64
If some package is not installed then install it from installation media or download it from following locations:
RedHat Enterprise Linux 3 - source packages only
RedHat Enterprise Linux 4 - source packages only
White Box Linux 3
White Box Linux 4
Centos Linux 3
Centos Linux 4
Centos Linux 5
This is example how to build RPM package from source package (libaio-0.3.96-3.src.rpm).
Note gcc, make and rpm-build (and dependent) packages must be already installed on your system.
# rpm -ivh libaio-0.3.96-3.src.rpm
# cd /usr/src/redhat/SPECS/
# rpmbuild -bb --target i386 libaio.spec
# cd ../RPMS/i386/
Install the required packages using the rpm command:
# rpm -ivh <package_name>.rpm
2. Download the Oracle 10g release 2 (10.2.0.1.0) software from Oracle website.
Extract the files using following command:
For 32bit installation archive
unzip 10201_database_linux32.zip
For 64bit installation archive
gunzip 10201_database_linux_x86_64.cpio.gz
cpio -idmv <10201_database_linux_x86_64.cpio
For RHEL 5, Centos 5: Modify database/install/oraparam.ini file and add "redhat-5" to "Certified Versions" section.
Example:
[Certified Versions]
Linux=redhat-3,SuSE-9,redhat-4,UnitedLinux-1.0,asianux-1,asianux-2,redhat-5
3. Start the Oracle software installation process.
Now the system is prepared for Oracle software installation.
To start the installation process execute the following commands:
cd db/Disk1/
./runInstaller
Note: You may get "Warning" status during some pre-requisites checks. This will happen on RH EL 3 where Update 3 or 4 were not installed. You can continue in installation when you simply change the status as "User verified".
1. (Optional) Auto Startup and Shutdown of Database and Listener
Login as root and modify /etc/oratab file and change last character to Y for apropriate database.
ORCL:/opt/oracle/102:Y
As root user create new file "oracle" (init script for startup and shutdown the database) in /etc/init.d/ directory with following content:
#!/bin/bash
#
# oracle Init file for starting and stopping
# Oracle Database. Script is valid for 10g and 11g versions.
#
# chkconfig: 35 80 30
# description: Oracle Database startup script
# Source function library.
. /etc/rc.d/init.d/functions
ORACLE_OWNER="oracle"
ORACLE_HOME="/opt/oracle/102"
case "$1" in
start)
echo -n $"Starting Oracle DB:"
su - $ORACLE_OWNER -c "$ORACLE_HOME/bin/dbstart $ORACLE_HOME"
echo "OK"
;;
stop)
echo -n $"Stopping Oracle DB:"
su - $ORACLE_OWNER -c "$ORACLE_HOME/bin/dbshut $ORACLE_HOME"
echo "OK"
;;
*)
echo $"Usage: $0 {start|stop}"
esac
Execute (as root) following commands (First script change the permissions, second script is configuring execution for specific runlevels):
chmod 750 /etc/init.d/oracle
chkconfig --add oracle --level 0356
2. (Optional) Auto Startup and Shutdown of Enterprise Manager Database Control
As root user create new file "oraemctl" (init script for startup and shutdown EM DB Console) in /etc/init.d/ directory with following content:
Dr Viraf J Dalal Face -
If you never find a clear, high-definition image of him, perhaps that’s the point. He taught you to see the molecules, the reactions, and the logic—not the face. And in doing so, he became more visible in your academic life than any celebrity teacher ever could.
So, while the internet continues to search for Dr. Viraf J. Dalal’s face, remember this: you’ve already seen his mind. And that is far more valuable. Have you studied from Understanding ISC Chemistry ? Share your memories of Dr. Dalal’s influence on your academic journey—no face required. dr viraf j dalal face
In the age of hyper-specific internet searches, few phrases are as intriguing as “Dr. Viraf J Dalal face.” At first glance, it seems straightforward—a request for the physical appearance of a well-known academic. However, digging deeper reveals a layered narrative involving the cult of author-teachers in India, the visual anonymity of textbook creators, and the unique curiosity of students who spend years studying someone’s work without ever seeing their face. If you never find a clear, high-definition image
Unlike many textbook authors who remain obscure names on a cover page, Dr. Dalal has achieved near-mythic status. His books are praised for their clarity, logical progression of problems, and comprehensive coverage of organic, inorganic, and physical chemistry. For over two decades, his name has been synonymous with “cracking the board exams” and competitive entrance preparations. Why would thousands of students and curious netizens type the phrase “dr viraf j dalal face” into search engines? Several theories emerge: 1. The Anonymous Authority Figure Most textbook authors in India do not prominently feature their photos. Unlike school principals who appear in assemblies or YouTube educators who vlog daily, Dr. Dalal’s public image has been remarkably low-key. For years, students solved his numerical problems, memorized his reaction mechanisms, and quoted his book in exams—but had no idea what he looked like. This anonymity creates a psychological vacuum. The mind naturally wants to attach a face to a voice (even if that voice is only in the reader’s head). Hence, the search. 2. Confusion with Celebrity or Social Media Figures The phrase “face” is often appended to names in meme culture or celebrity look-alike searches. For example, “Ratan Tata face” or “Mukesh Ambani face” trends occasionally. Dr. Dalal’s uncommon Parsi surname “Dalal” combined with the formal “Dr. Viraf J.” might accidentally trigger searches from those mixing him up with a public figure, a news anchor, or even a fictional character. Some confusion may also arise from Dalal Street (India’s financial hub), though that connection is coincidental. 3. Academic Fandom and Respect In an era where students often complain about dry textbooks, Dr. Dalal’s work inspires genuine gratitude. For many, finding out what their academic mentor looks like is a form of tribute. They want to see the eyes behind the equations. This is similar to fans searching for the faces of their favorite novelists. It’s not superficial curiosity—it’s an attempt to humanize an icon. What Does Dr. Viraf J. Dalal Actually Look Like? Given the scarcity of high-resolution, verified images, many search results for “dr viraf j dalal face” lead to blurred book launch photos, low-quality scanning of old author bios, or even misattributed images of other Parsi educators. So, while the internet continues to search for Dr
Who is Dr. Viraf J. Dalal? Why is there a growing search volume for his “face”? And what does this tell us about the intersection of education, identity, and the digital age? Before we address the search term itself, we must understand the man. Dr. Viraf J. Dalal is a legendary figure in the Indian secondary education system, particularly for students in the ISC (Indian School Certificate) and ICSE (Indian Certificate of Secondary Education) boards. He is primarily known as the author of Understanding ISC Chemistry , a textbook that has become the bible for Class XI and XII science students across the country.
Execute (as root) following commands (First script change the permissions, second script is configuring execution for specific runlevels):
chmod 750 /etc/init.d/oraemctl
chkconfig --add oraemctl --level 0356
3. (Optional) You may consider to use rlwrap for comfortable work with sqlplus and rman utility.
RPM package for RedHat compatible (x86) distribution you can download here.
RPM package for RedHat compatible (x86_64) distribution you can download here.
su -
# rpm -ivh rlwrap*.rpm
# exit
echo "alias sqlplus='rlwrap sqlplus'" >> /home/oracle/.bash_profile
echo "alias adrci='rlwrap rman'" >> /home/oracle/.bash_profile
. /home/oracle/.bash_profile
DISPLAY not set. Please set the DISPLAY and try again.
Solution: Execute "export DISPLAY=:0.0" when you perform installtion on local machine or "export DISPLAY=:0.0 when you perform installation on remote machine connected over SSH". Don't forget to execute "xhost +" command on client machine.
Exception java.lang.UnsatisfiedLinkError: /tmp/OraInstall2005-07-07_09-40-45AM/jre/1.4.2/lib/i386/libawt.so: libXp.so.6: cannot open shared object file: No such file or directory occurred..
java.lang.UnsatisfiedLinkError: /tmp/OraInstall2005-07-07_09-40-45AM/jre/1.4.2/lib/i386/libawt.so: libXp.so.6: cannot open shared object file: No such file or directory
Solution: RH 3, WB 3, Centos 3 - Install the XFree86-libs-4.3.0-81.EL.i386.rpm and dependent packages.
RH 4, WB 4, Centos 4 - Install the xorg-x11-deprecated-libs-6.8.2-1.EL.13.6.i386.rpm package.
RH 5, OEL 5, Centos 5 - Install the libXp-1.0.0-8.1.el5.i386.rpm package.
error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory
Solution: Install libaio and libaio-devel packages. If packages already installed and error still occurs try execute "ldconfig" as root.
Check complete. The overall result of this check is: Failed <<<<
Solution: Install missing package or set check system parameters (See reason of failure).
Comments, suggestions, questions, errors (also grammatical :) )? Feel free to
contact me.