Installing Oracle 11gR2 on Linux | The Big Data - Business Intelligence by Sandeep Venu

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Installing Oracle 11gR2 on Linux

Pre-Instalation Tasks


1. Create oracle User Account

Login as root and create te user oracle which belongs to oinstall,dba,asmdba and asmadmin groups.


su -
# groupadd dba
# groupadd oinstall
# groupadd asmdba
# groupadd asmadmin
# useradd -g oinstall -G dba,asmdba,asmadmin oracle


Note: "#" sign means that you need execute this command as root user.
You can separate ASM and DBA roles between more users. You can create for example "asm" user as ASM administrator


2. Setting System parameters
Edit the /etc/sysctl.confand add following lines:
# vi /etc/sysctl.conf


kernel.shmall = 2097152
kernel.shmmax = 536870912
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
fs.file-max = 6815744
fs.aio-max-nr = 1048576
net.ipv4.ip_local_port_range = 9000 65500
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576


Note: You need reboot system or execute "sysctl -p" command to apply above settings.
/sbin/sysctl -p






Edit the /etc/pam.d/login file and add following line:
# vi /etc/pam.d/login


session required pam_limits.so



Edit the /etc/security/limits.conf file and add following lines:
# vi /etc/security/limits.conf


oracle    soft  nproc  2047
oracle    hard  nproc  16384
oracle    soft  nofile  1024
oracle    hard  nofile  65536



3.Setting Oracle Enviroment
Edit the /home/oracle/.bash_profile file and add following lines:


# su oracle
#$ vi ~/.bash_profile

TMP=/tmp; export TMP
TMPDIR=$TMP; export TMPDIR

ORACLE_HOSTNAME=vmdemo.oracle.com; export ORACLE_HOSTNAME
ORACLE_BASE=/u01/app/oracle; export ORACLE_BASE
ORACLE_HOME=$ORACLE_BASE/product/11.2.0/db_1; export ORACLE_HOME
ORACLE_SID=DB11G; export ORACLE_SID
ORACLE_TERM=xterm; export ORACLE_TERM
PATH=/usr/sbin:$PATH; export PATH
PATH=$ORACLE_HOME/bin:$PATH; export PATH

LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib; export LD_LIBRARY_PATH
CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib; export CLASSPATH

if [ $USER = "oracle" ]; then
  if [ $SHELL = "/bin/ksh" ]; then
    ulimit -p 16384
    ulimit -n 65536
  else
    ulimit -u 16384 -n 65536
  fi
fi

#$ source ~/.bash_profile



Save the .bash_profileand execute following commands for load new enviroment:


cd /home/oracle
. .bash_profile



Check current status of SELinux:


/usr/sbin/getenforce



If output is "Enforcing"then change mode to "Permissive" using following command:


/usr/sbin/setenforce 0



To prevent Enforcing mode restore after next reboots or to disable SELinux modify the /etc/sysconfig/selinux change value of SELINUX variable to permissive or disabled:


SELINUX=permissive


Cheers,


4.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:


rpm -q binutils compat-db compat-libstdc++-33 glibc glibc-devel glibc-headers gcc gcc-c++ libstdc++ gdbm make ksh elfutils-libelf sysstat libaio libaio-devel setarch unixODBC libXp libXtst xorg-x11-utils --qf '%{name}.%{arch}\n'|sort








Output for 32 bit (i386) Linuxversion:


binutils.i386
compat-db.i386
compat-libstdc++-33.i386
elfutils-libelf.i386
gcc-c++.i386
gcc.i386
gdbm.i386
glibc-devel.i386
glibc-headers.i386
glibc.i386
glibc.i686
ksh.i386
libaio-devel.i386
libaio.i386
libstdc++.i386
libXp.i386
libXtst.i386
make.i386
setarch.i386
sysstat.i386
unixODBC.i386
xorg-x11-utils.i386


sudo yum install compat-db gcc gcc-c++ libstdc++ pdksh sysstat compat-libstdc++-33 \


 elfutils-libelf-devel elfutils-libelf-devel-static unixODBC unixODBC-devel libaio-devel



Output for 64 bit (x86_64) Linuxversion:


binutils.x86_64
compat-db.x86_64
compat-libstdc++-33.i386
compat-libstdc++-33.x86_64
elfutils-libelf.i386
elfutils-libelf.x86_64
gcc-c++.x86_64
gcc.x86_64
gdbm.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.x86_64
libstdc++.i386
libstdc++.x86_64
libXp.i386
libXtst.i386
libXtst.x86_64
make.x86_64
setarch.x86_64
sysstat.x86_64
unixODBC.i386
unixODBC.x86_64
xorg-x11-utils.x86_64



If some package is not installed then install it from installation media or download it from following locations:
RedHat Enterprise Linux 5- source packages only
CentOS Linux 5i386



This is example how to build RPM package from source package (libaio-0.3.105-2.src.rpm). Note gcc, make and rpm-build (and dependent) packages must be already installed on your system.


# rpm -ivh libaio-0.3.105-2.src.rpm
# cd /usr/src/redhat/SPECS/
# rpmbuild -bb --target i386 libaio.spec
# cd ../RPMS/i386/
# rpm -ivh libaio-0.3.105-2.i386.rpm libaio-devel-0.3.105-2.i386.rpm




1.Install the required packages using the rpm command:


rpm -ivh <package_name>.rpm




2. Download the Oracle 11g release 2 (11.2.0.1.0) software from Oracle website.

Extract the files using following command:

For Grid (CRS)software installation:


unzip linux.x64_11gR2_grid.zip



For Databasesoftware installation:


unzip linux.x64_11gR2_database_1of2.zip
unzip linux.x64_11gR2_database_2of2.zip



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: Now the system is prepared for Oracle software installation. To start the installation process execute the following commands:

For Grid (CRS)software installation:


cd grid
./runInstaller



For Databasesoftware installation:


cd ~oracle/orainstall/11….


unzip linux_11gR2_databasexxxxx1.zip


unzip linux_11gR2_databasexxxxx2.zip





cd database


./runInstaller





Post-Instalation Tasks

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:/u01/app/oracle/product/11.2.0/db_1: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="/u01/app/oracle/product/11.2.0/db_1"

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:


#!/bin/bash
#
# oraemctl Starting and stopping Oracle Enterprise Manager Database Control.
# Script is valid for 10g and 11g versions.
#
# chkconfig: 35 80 30
# description: Enterprise Manager DB Control startup script

# Source function library.

. /etc/rc.d/init.d/functions

ORACLE_OWNER="oracle"
ORACLE_HOME="/u01/app/oracle/product/11.2.0/db_1"

case "$1" in
start)
echo -n $"Starting Oracle EM DB Console:"
su - $ORACLE_OWNER -c "$ORACLE_HOME/bin/emctl start dbconsole"
echo "OK"
;;
stop)
echo -n $"Stopping Oracle EM DB Console:"
su - $ORACLE_OWNER -c "$ORACLE_HOME/bin/emctl stop dbconsole"
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/oraemctl
chkconfig --add oraemctl --level 0356



3. (Optional) You may consider to use rlwrap for comfortable work with sqlplus, rman and adrci utility. RPM package for RedHat compatible distribution you can download it here:
For Redhat 32 bit (i386)
For Redhat 32 bit (x86_64)

Install downloaded packages:


su -
# rpm -ivh rlwrap-0.24-rh.i386.rpm
# exit
echo "alias sqlplus='rlwrap sqlplus'" >> /home/oracle/.bash_profile
echo "alias adrci='rlwrap rman'" >> /home/oracle/.bash_profile
echo "alias adrci='rlwrap adrci'" >> /home/oracle/.bash_profile
. /home/oracle/.bash_profile





Common Installation Errors

DISPLAY not set. Please set the DISPLAY and try again.
Solution: Execute "export DISPLAY=:0.0" when you perform installation 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.

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).

error while loading shared libraries: ... libclntsh.so.11.1: cannot restore segment prot after reloc: Permission denied
Solution: SELinux is running in "Enforcing" mode. Change SELinux mode to "Permissive" using /usr/sbin/setenforce 0 and change the settings in /etc/sysconfig/selinux (See Pre-Instalation Tasks section).

ADVM/ACFS is not supported on centos-release-5.el5.centos or ADVM/ACFS is not supported on centos-release-5-1.el5.centos or ADVM/ACFS is not supported on centos-release-5-2.el5.centos or ADVM/ACFS is not supported on centos-release-5-3.el5.centos or ADVM/ACFS is not supported on centos-release-5-4.el5.centos or
Execute "as root": echo "redhat-release-5Server-5" > /tmp/.linux_release





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