最近需要安装oracle，然后网上查了一下教程，在centos7.7上安装成功，运行正常。这里记录一下。

环境：

硬件4核/8G RAM/100G 存储

centos7.7（64bit）

oracle11g（官网下载的）

步骤（转载）：

第一个脚本preinstalloracle.sh，以root用户运行。执行完后需要重启电脑，需要注意看一下hostname是否修改好了

 #!/bin/bash
#以root用户运行
#注意修改第三行的ip为自己的ip地址
echo "172.16.1.110 orcl orcl" >> /etc/hosts
cat >> /etc/sysconfig/network <<EOF
network=yes
hostname=orcl
EOF

第二个脚本secinstalloracle.sh，以root用户运行

 #!/bin/bash
#以root用户运行
#内核参数设置kernel.shmall=2097152其中16G物理内存建议设为4194304类推8G应为2097152
#kernel.shmmax=4294967296一般设置为物理内存的一半,8G:4294967296也可以全部用完8*1024*1024*1024
yum install -y binutils compat-libstdc++-33 elfutils-libelf elfutils-libelf-devel glibc glibc-common glibc-devel gcc gcc-c++ libaio-devel libaio libgcc libstdc++ libstdc++-devel make sysstat unixODBC unixODBC-devel ksh numactl-devel zip unzip
cat >> /etc/sysctl.conf <<EOF
fs.file-max = 6815744
fs.aio-max-nr = 1048576
kernel.shmall = 2097152    
kernel.shmmax = 4294967296  
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
net.ipv4.ip_local_port_range = 9000 65500
net.core.rmem_default = 4194304
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
EOF
sysctl -p #使配置文件生效
cat >> /etc/security/limits.conf <<EOF
oracle      soft  nproc      2047
oracle      hard  nproc      16384
oracle      soft  nofile     1024
oracle      hard  nofile     65536
EOF
cat >> /etc/pam.d/login <<EOF
session  required   /lib/security/pam_limits.so
session  required   pam_limits.so
EOF
cat >> /etc/profile <<EOF
if [ $USER = "oracle" ]; then
  if [ $SHELL = "/bin/ksh" ]; then
   ulimit -p 16384
   ulimit -n 65536
  else
   ulimit -u 16384 -n 65536
  fi
fi
EOF
groupadd oinstall
groupadd dba
useradd -g oinstall -G dba oracle 
mkdir -p /u01/app/oracle/product/11.2.0/db_1
mkdir -p /u01/app/oracle/oradata
mkdir -p /u01/app/oraInventory
mkdir -p /u01/app/oracle/fast_recovery_area
chown -R oracle:oinstall /u01/app/oracle
chown -R oracle:oinstall /u01/app/oraInventory
chmod -R 755 /u01/app/oracle
chmod -R 755 /u01/app/oraInventory
systemctl disable firewalld
systemctl stop firewalld
setenforce 0
sed -i 's/=enforcing/=disabled/g' /etc/selinux/config
mv p13390677_112040_Linux-x86-64_1of7.zip /home/oracle  
mv p13390677_112040_Linux-x86-64_2of7.zip /home/oracle
cp thiinstalloracle.sh /home/oracle/
cp fouinstalloracle.sh /home/oracle/

第三个脚本thiinstalloracle.sh，以oracle用户运行，su - oracle

 #!/bin/bash
#以oracle用户运行，su - oracle
cat >> .bash_profile <<EOF
ORACLE_BASE=/u01/app/oracle
ORACLE_HOME=\$ORACLE_BASE/product/11.2.0/db_1
ORACLE_SID=orcl 
export NLS_LANG=AMERICAN_AMERICA.UTF8
PATH=\$PATH:\$ORACLE_HOME/bin
export ORACLE_BASE ORACLE_HOME ORACLE_SID PATH
umask 022
EOF
source .bash_profile
unzip p13390677_112040_Linux-x86-64_1of7.zip 
unzip p13390677_112040_Linux-x86-64_2of7.zip
chown -R oracle:oinstall database
cd database/response
cp db_install.rsp db_install.rsp.bak
sed -i "s/^oracle.install.option=/oracle.install.option=INSTALL_DB_SWONLY/g" db_install.rsp
sed -i "s/^ORACLE_HOSTNAME=/ORACLE_HOSTNAME= orcl/g" db_install.rsp
sed -i "s/^UNIX_GROUP_NAME=/UNIX_GROUP_NAME=oinstall/g" db_install.rsp
sed -i "s/^INVENTORY_LOCATION=/INVENTORY_LOCATION=\/u01\/app\/oraInventory/g" db_install.rsp
sed -i "s/^SELECTED_LANGUAGES=en/SELECTED_LANGUAGES=en,zh_CN/g" db_install.rsp
sed -i "s/^ORACLE_HOME=/ORACLE_HOME=\/u01\/app\/oracle\/product\/11.2.0\/db_1/g" db_install.rsp
sed -i "s/^ORACLE_BASE=/ORACLE_BASE=\/u01\/app\/oracle/g" db_install.rsp
sed -i "s/^oracle.install.db.InstallEdition=/oracle.install.db.InstallEdition=EE/g" db_install.rsp
sed -i "s/^oracle.install.db.DBA_GROUP=/oracle.install.db.DBA_GROUP=dba/g" db_install.rsp
sed -i "s/^oracle.install.db.OPER_GROUP=/oracle.install.db.OPER_GROUP=dba/g" db_install.rsp
sed -i "s/^DECLINE_SECURITY_UPDATES=/DECLINE_SECURITY_UPDATES=true/g" db_install.rsp
cd ..