测试完成，有两处笔误已经修改完了。
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#!/bin/bash
# oracle
# 2009/03/12 first twtcom
# set variable
# ORACLE_BASE=/u1
echo -n "Please enter HOSTNAME(default oracle):"
read HOSTNAME
if [ -z $HOSTNAME ]
then
HOSTNAME=oracle
fi
echo -n "Please enter ORACLE_BASE(default /u1):"
read ORACLE_BASE
if [ -z $ORACLE_BASE ]
then
ORACLE_BASE=/u1
fi
# ORACLE_HOME=$ORACLE_BASE/oracle
echo -n "Please enter HOME(default oracle):"
read HOME
if [ -z $HOME ]
then
HOME=oracle
fi
ORACLE_HOME=$ORACLE_BASE/$HOME
# ORACLE_SID=oral
echo -n "Please enter ORACLE_SID(default oral):"
read ORACLE_SID
if [ -z $ORACLE_SID ]
then
ORACLE_SID=oral
fi
USER=oracle
SYSCTL=/etc/sysctl.conf
LIMITS=/etc/security/limits.conf
PAM=/etc/pam.d/login
PROFILE=/etc/profile
BASH_PROFILE=$ORACLE_HOME/.bash_profile
IPADDR=`ifconfig eth0|grep "inet addr"|cut -d : -f 2|cut -d ' ' -f 1`
HOSTS=/etc/hosts
NETWORK=/etc/sysconfig/network
# hostname
grep -v "HOSTNAME" $NETWORK > $NETWORK
echo "HOSTNAME=$HOSTNAME" >> $NETWORK
echo "$IPADDR $HOSTNAME">> $HOSTS
# useradd
mkdir -p $ORACLE_BASE
groupadd oinstall
groupadd dba
useradd -g oinstall -G dba -d $ORACLE_HOME $USER
chown -R $USER:oinstall $ORACLE_BASE
cat >> $SYSCTL << EOF
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 = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 262144
EOF
cat >> $LIMITS < oracle soft nproc 2047 oracle hard nproc 16384 oracle soft nofile 1024 oracle hard nofile 65536 EOF cat >> $PAM < session required pam_limits.so EOF