Oracle Instalation On Linux

Configure the kernel.
Edit /etc/sysctl.conf.
Add the following to the file:
# Kernel parameters required by Oracle 11gR1 / 10g

fs.file-max = 6553600
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 = 4194304
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 262144
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sysctl -p
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Edit /etc/security/limits.conf
Add these lines:

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

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Edit /etc/pam.d/login

Add these lines:

session required /lib/security/pam_limits.so
session required pam_limits.so
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Edit /etc/profile

Add these lines:

if [ $USER = "oracle" ]; then
if [ $SHELL = "/bin/ksh" ]; then
ulimit -p 16384
ulimit -n 65536
else
ulimit -u 16384 -n 65536
fi
fi
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groupadd oinstall
groupadd dba
groupadd oper
useradd oracle
usermod -g oinstall -G dba,oper,oracle oracle
passwd oracle
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Edit /home/oracle/.bash_profile

Add these lines:

umask 022
ORACLE_BASE=/u01/app/oracle
ORACLE_HOME=$ORACLE_BASE/product/11.1.0/db_1
ORACLE_SID=orcl
PATH=$ORACLE_HOME/bin:$PATH
export PATH
export ORACLE_BASE ORACLE_HOME ORACLE_SID
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mkdir -p /u01/app
chown root:oinstall /u01/app
chmod 775 /u01/app
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