How to Install Oracle Client for Ubuntu

Login to user laptop with “Administrator” username

Switch user as root and follow the steps given below to install Oracle client in Ubuntu

 # apt-get install gcc make binutils lesstif2 libc6 libc6-dev rpm libmotif3 libaio1 libstdc++5 gawk alien ksh gcc-3.3 g++-3.3 libstdc++5  

 # addgroup oinstall  

 # addgroup dba  

 # addgroup nobody  

 # useradd -g oinstall -G dba -p password -d /home/oracle -s /bin/bash oracle  

 # usermod -g nobody nobody  

 # mkdir /home/oracle  

 # chown -R oracle:dba /home/oracle  

 # ln -s /usr/bin/awk /bin/awk  

 # ln -s /usr/bin/rpm /bin/rpm  

 # ln -s /usr/bin/basename /bin/basename  

We need to mimic the /etc/rc.d directory structure of a Red Hat box. We do this with more symlinks:

 # mkdir /etc/rc.d

 # ln -s /etc/rc0.d /etc/rc.d/rc0.d  

 # ln -s /etc/rc2.d /etc/rc.d/rc2.d  

 # ln -s /etc/rc3.d /etc/rc.d/rc3.d  

 # ln -s /etc/rc4.d /etc/rc.d/rc4.d  

 # ln -s /etc/rc5.d /etc/rc.d/rc5.d 

 # ln -s /etc/rc6.d /etc/rc.d/rc6.d  

 # ln -s /etc/init.d /etc/rc.d/init.d  

 # echo "Red Hat Linux release 4" > /etc/redhat-release  

4. vi /etc/sysctl.conf add below lines.

fs.file-max = 65535
kernel.shmall = 2097152
kernel.shmmax = 2147483648
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
net.ipv4.ip_local_port_range = 1024 65000
net.core.rmem_default = 1048576
net.core.rmem_max = 1048576
net.core.wmem_default = 262144
net.core.wmem_max = 262144

5. vi /etc/security/limits.conf

oracle soft nproc 2047
oracle hard nproc 16383
oracle soft nofile 1023
oracle hard nofile 65535 

6. Make sure the limits.conf is being interpreted as the oracle user logs in by adding these lines to /etc/pam.d/login. You will want to make sure that is actually happening, since the defaults are way lower and you may get all sorts of problems.

session required /lib/security/pam_limits.so
session required pam_limits.so

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