Install Oracle 11G Release 2 (11.2) on Centos Linux 7
This article presents how to install Oracle 11G on Centos Linux 7.
Read following article how to install Centos Linux 7: Install Centos Linux 7 (for comfort set 2G memory for your virtual machine before proceeding with Oracle software installation).
Installation software is available on OTN, edelivery version 11.2.0.1 or Oracle support(old metalink) 11.2.0.4. In this installation I’m presenting installation for 11.2.0.4 but for previous version 11.2.0.X it shouldn’t be different.
- Oracle support
- OTN: Oracle Database 11G Release 2 Software (64-bit).
- edelivery: Oracle Database 11G Release 2 Software (64-bit)
Database software – 11.2.0.4
p13390677_112040_Linux-x86-64_1of7.zip p13390677_112040_Linux-x86-64_2of7.zip
OS configuration and preparation
OS configuration is executed as root. To login as root just execute following command in terminal.
su - root
Add groups
--required groups /usr/sbin/groupadd -g 501 oinstall /usr/sbin/groupadd -g 502 dba /usr/sbin/groupadd -g 503 oper
Add user Oracle
/usr/sbin/useradd -u 502 -g oinstall -G dba,oper oracle
Change password for user
passwd oracle
Add kernel parameters to /etc/sysctl.conf
kernel.shmmni = 4096 kernel.shmmax = 4398046511104 kernel.shmall = 1073741824 kernel.sem = 250 32000 100 128 fs.aio-max-nr = 1048576 fs.file-max = 6815744 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 = 1048586
Apply kernel parameters
/sbin/sysctl -p
Add following lines to set shell limits for user oracle in file /etc/security/limits.conf
oracle soft nproc 131072 oracle hard nproc 131072 oracle soft nofile 131072 oracle hard nofile 131072 oracle soft core unlimited oracle hard core unlimited oracle soft memlock 50000000 oracle hard memlock 50000000
The “/etc/hosts” file must contain a fully qualified name for the server.
<IP-address> <fully-qualified-machine-name> <machine-name>
For example.
127.0.0.1 centos7 centos7.dbaora.com localhost localhost.localdomain
Verify your network settings
[root@centos7 ~]# ping -c 1 centos7 PING centos7 (127.0.0.1) 56(84) bytes of data. 64 bytes from centos7 (127.0.0.1): icmp_seq=1 ttl=64 time=0.040 ms --- centos7 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.040/0.040/0.040/0.000 ms
Modify .bash_profile for user oracle in his home directory
# Oracle Settings export TMP=/tmp export ORACLE_HOSTNAME=centos7.dbaora.com export ORACLE_UNQNAME=ORA11G export ORACLE_BASE=/ora01/app/oracle export ORACLE_HOME=$ORACLE_BASE/product/11.2.0/db_1 export ORACLE_SID=ORA11G PATH=/usr/sbin:$PATH:$ORACLE_HOME/bin export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib; export CLASSPATH=$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib; alias cdob='cd $ORACLE_BASE' alias cdoh='cd $ORACLE_HOME' alias tns='cd $ORACLE_HOME/network/admin' alias envo='env | grep ORACLE' umask 022
Check which packages are installed and which are missing
rpm -q --qf '%{NAME}-%{VERSION}-%{RELEASE}(%{ARCH})
' binutils
elfutils-libelf
elfutils-libelf-devel
gcc
gcc-c++
glibc
glibc-common
glibc-devel
glibc-headers
ksh
libaio
libaio-devel
libgcc
libstdc++
libstdc++-devel
make
sysstat
unixODBC
unixODBC-devel
In my case it returns following
binutils-2.23.52.0.1-16.el7(x86_64) elfutils-libelf-0.158-3.el7(x86_64) package elfutils-libelf-devel is not installed gcc-4.8.2-16.el7(x86_64) gcc-c++-4.8.2-16.el7(x86_64) glibc-2.17-55.el7(x86_64) glibc-common-2.17-55.el7(x86_64) glibc-devel-2.17-55.el7(x86_64) glibc-headers-2.17-55.el7(x86_64) package ksh is not installed libaio-0.3.109-12.el7(x86_64) package libaio-devel is not installed libgcc-4.8.2-16.el7(x86_64) libstdc++-4.8.2-16.el7(x86_64) libstdc++-devel-4.8.2-16.el7(x86_64) make-3.82-21.el7(x86_64) sysstat-10.1.5-4.el7(x86_64) package unixODBC is not installed package unixODBC-devel is not installed
Missing packages are on Centos 7 installation dvd. Other option if you are connected to internet is just use yum install command.
- First option – just mount dvd and install missing packages using rpm -Uvh command from directory <mount dvd>/Packages.
In my case the directory is
/run/media/tomasz/CentOS 7 x86_64/Packages
NOTE – I’m using x86_64 version of packages
rpm -Uvh elfutils-libelf-devel*.x86_64.rpm rpm -Uvh libaio-devel*.x86_64.rpm rpm -Uvh unixODBC*.x86_64.rpm rpm -Uvh ksh*.x86_64.rpm
- Second option – use yum install command
yum -y install elfutils-libelf-devel yum -y install libaio-devel yum -y install unixODBC yum -y install unixODBC-devel yum -y install ksh
Create directory structure
mkdir -p /ora01/app chown oracle:oinstall /ora01/app chmod 775 /ora01/app
create ORACLE_BASE directory for oracle
mkdir -p /ora01/app/oracle chown oracle:oinstall /ora01/app/oracle chmod 775 /ora01/app/oracle
Create ORACLE_HOME directory for oracle
mkdir -p /ora01/app/oracle/product/11.2.0/db_1 chown oracle:oinstall -R /ora01/app/oracle
Disable secure linux by editing the “/etc/selinux/config” file, making sure the SELINUX flag is set as follows. It requires REBOOT to be effective !!!
SELINUX=permissive
In Centos Linux 7 /tmp data is stored on tmpfs which consumes memory and is too small. To revert it back to storage just run following command and REBOOT machine to be effective.
systemctl mask tmp.mount
Install database software
Let’s start with database software installation as oracle user.
su - oracle --unzip software 11.2.0.4 unzip p13390677_112040_Linux-x86-64_1of7.zip unzip p13390677_112040_Linux-x86-64_2of7.zip --I defined 4 aliases in .bash_profile of user oracle to make --administration heaven :) [oracle@centos7 ~]$ alias envo cdob cdoh tns alias envo='env | grep ORACLE' alias cdob='cd $ORACLE_BASE' alias cdoh='cd $ORACLE_HOME' alias tns='cd $ORACLE_HOME/network/admin' --run alias command envo to display environment settings envo ORACLE_UNQNAME=ORA11G ORACLE_SID=ORA11G ORACLE_BASE=/ora01/app/oracle ORACLE_HOSTNAME=centos7.dbaora.com ORACLE_HOME=/ora01/app/oracle/product/11.2.0/db_1 --run alias command cdob and cdoh to check ORACLE_BASE, ORACLE_HOME [oracle@centos7 ~]$ cdob [oracle@centos7 oracle]$ pwd /ora01/app/oracle [oracle@centos7 db_1]$ cdoh [oracle@centos7 db_1]$ pwd /ora01/app/oracle/product/11.2.0/db_1 --run installation from install directory ./runInstall