oracle install

#add group
/usr/sbin/groupadd oinstall
/usr/sbin/groupadd dba
#add user
/usr/sbin/useradd -g oinstall -G dba oracle
password

#mod /etc/sysctl.conf

#kernel.shmall = 2097152        #rhel4 default is 2097152
kernel.shmmax = 4182255616        
#kernel.shmmni = 4096            #rhel4 default is 4096
kernel.sem = 250 32000 100 128        #default is 250 32000 25 128
#fs.file-max = 65536            #default is 7****
net.ipv4.ip_local_port_range = 1024 65000    #default is 3650 6****
net.core.rmem_default = 262144            #default is 131072
net.core.rmem_max = 262144            #default is 131072
net.core.wmem_default = 262144            #default is 131072
net.core.wmem_max = 262144            #default is 131072

#mod /etc/security/limits.conf

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

#mod /etc/pam.d/login

session    required     pam_limits.so

#mod user oracle's default shell
#/etc/profile

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

#create directories

mkdir -p /u500/app/oracle
chown -R oracle:oinstall /u500/app/oracle/
chmod -R 775 /u500/app/oracle/


#set env
TEMP=/mount_point/tmp
TMPDIR=/mount_point/tmp
export TEMP TMPDIR


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