12cR2 Installation on Linux (Step by Step)

Hosts File

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       localhost localhost.localdomain
192.168.1.21  testdb.com    testdb

Set the correct hostname in the "/etc/hostname" file.

Manual Setup

If you have not used the "oracle-database-server-12cR2-preinstall" package to perform all

prerequisites, you will need to manually perform the following setup tasks.

Add the following lines to the "/etc/sysctl.conf" file, or in a file called

"/etc/sysctl.d/98-oracle.conf".

fs.file-max = 6815744
kernel.sem = 250 32000 100 128
kernel.shmmni = 4096
kernel.shmall = 1073741824
kernel.shmmax = 4398046511104
kernel.panic_on_oops = 1
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
net.ipv4.conf.all.rp_filter = 2
net.ipv4.conf.default.rp_filter = 2
fs.aio-max-nr = 1048576
net.ipv4.ip_local_port_range = 9000

than in order to be activate/to take effects now run below command

/sbin/systcl -p



Add the following lines to a file called "/etc/security/limits.d/oracle-database-server-

12cR2-preinstall.conf" file.

oracle   soft   nofile    1024
oracle   hard   nofile    65536
oracle   soft   nproc    16384
oracle   hard   nproc    16384
oracle   soft   stack    10240
oracle   hard   stack    32768
oracle   hard   memlock    134217728
oracle   soft   memlock    134217728

Install RPMS from /media/ENterpise/Server



 rpm -Uvh --force --nodeps gcc-4.4.7-3.el6.x86_64.rpm
 rpm -Uvh --force --nodeps gcc-c++-4.4.7-3.el6.x86_64.rpm
 rpm -Uvh --force --nodeps binutils*
 rpm -Uvh --force --nodeps compat-libcap1*
 rpm -Uvh --force --nodeps compat-libstdc++-33*
 rpm -Uvh --force --nodeps compat-libstdc++-33.i686*
 rpm -Uvh --force --nodeps glibc*
 rpm -Uvh --force --nodeps glibc.i686*
 rpm -Uvh --force --nodeps glibc-devel*
 rpm -Uvh --force --nodeps glibc-devel.i686*
 rpm -Uvh --force --nodeps ksh*
 rpm -Uvh --force --nodeps libaio*
 rpm -Uvh --force --nodeps libaio.i686*
 rpm -Uvh --force --nodeps libaio-devel*
 rpm -Uvh --force --nodeps libaio-devel.i686*
 rpm -Uvh --force --nodeps libX11*
 rpm -Uvh --force --nodeps libX11.i686*
 rpm -Uvh --force --nodeps libXau*
 rpm -Uvh --force --nodeps libXau.i686*
 rpm -Uvh --force --nodeps libXi*
 rpm -Uvh --force --nodeps libXi.i686*
 rpm -Uvh --force --nodeps libXtst*
 rpm -Uvh --force --nodeps libXtst.i686*
 rpm -Uvh --force --nodeps libgcc*
 rpm -Uvh --force --nodeps libgcc.i686*
 rpm -Uvh --force --nodeps libstdc++*
 rpm -Uvh --force --nodeps libstdc++.i686*
 rpm -Uvh --force --nodeps libstdc++-devel*
 rpm -Uvh --force --nodeps libstdc++-devel.i686*
 rpm -Uvh --force --nodeps libxcb*
 rpm -Uvh --force --nodeps libxcb.i686*
 rpm -Uvh --force --nodeps make*
 rpm -Uvh --force --nodeps nfs-utils*
 rpm -Uvh --force --nodeps net-tools*
 rpm -Uvh --force --nodeps smartmontools*
 rpm -Uvh --force --nodeps sysstat*
 rpm -Uvh --force --nodeps unixODBC*
 rpm -Uvh --force --nodeps unixODBC-devel*

Define different groups


groupadd -g 54321 oinstall
groupadd -g 54322 dba
groupadd -g 54323 oper
#groupadd -g 54324 backupdba
#groupadd -g 54325 dgdba
#groupadd -g 54326 kmdba
#groupadd -g 54327 asmdba
#groupadd -g 54328 asmoper
#groupadd -g 54329 asmadmin
#groupadd -g 54330 racdba

Creating Oracle User

useradd -u 54321 -g oinstall -G dba,oper oracle

passwd oracle

Creating Directories structure

mkdir -p /u01/app/oracle/product/12.2.0.1/dbhome
chown -R oracle:oinstall /u01
chmod -R 775 /u01


Setting Environment Variable



# Oracle Settings
    TMP=/tmp; export TMP
    TMPDIR=$TMP; export TMPDIR

    ORACLE_HOSTNAME=testdb.com; export ORACLE_HOSTNAME
    ORACLE_UNQNAME=cdb1; export ORACLE_UNQNAME
    ORACLE_BASE=/u01/app/oracle; export ORACLE_BASE
    ORACLE_HOME=$ORACLE_BASE/product/12.2.0.1/db_1; export ORACLE_HOME
    ORACLE_SID=cdb1; export ORACLE_SID
    PATH=/usr/sbin:$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/jlib:$ORACLE_HOME/rdbms/jlib; export CLASSPATH