1.创建用户和组：
/usr/sbin/groupadd -g 54321 oinstall
/usr/sbin/groupadd -g 54322 dba
/usr/sbin/groupadd -g 54323 oper
/usr/sbin/useradd -u 54321 -g oinstall -G dba,oper oracle
2.给oracle设置密码
passwd oracle
3.关闭防火墙和selinux
systemctl stop firewalld.service
systemctl disable firewalld.service
vim /etc/selinux/config
4.创建工作目录
mkdir -p /u01/app/oracle/product/19.2.0/db_1
chown -R oracle:oinstall /u01/
chmod -R 775 /u01/
5.设置oracle环境变量
vi .bash_profile
ORACLE_SID=orcl;export ORACLE_SID
ORACLE_UNQNAME=orcl;export ORACLE_UNQNAME
ORACLE_BASE=/u01/app/oracle; export ORACLE_BASE
ORACLE_HOME=$ORACLE_BASE/product/19.2.0/db_1; export ORACLE_HOME
NLS_DATE_FORMAT="YYYY:MM:DDHH24:MI:SS"; export NLS_DATE_FORMAT
NLS_LANG=american_america.ZHS16GBK; export NLS_LANG
TNS_ADMIN=$ORACLE_HOME/network/admin; export TNS_ADMIN
ORA_NLS11=$ORACLE_HOME/nls/data; export ORA_NLS11
PATH=.:${JAVA_HOME}/bin:${PATH}:$HOME/bin:$ORACLE_HOME/bin:$ORA_CRS_HOME/bin
PATH=${PATH}:/usr/bin:/bin:/usr/bin/X11:/usr/local/bin
export PATH
LD_LIBRARY_PATH=$ORACLE_HOME/lib
LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:$ORACLE_HOME/oracm/lib
LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/lib:/usr/lib:/usr/local/lib
export LD_LIBRARY_PATH
CLASSPATH=$ORACLE_HOME/JRE
CLASSPATH=${CLASSPATH}:$ORACLE_HOME/jlib
CLASSPATH=${CLASSPATH}:$ORACLE_HOME/rdbms/jlib
CLASSPATH=${CLASSPATH}:$ORACLE_HOME/network/jlib
export CLASSPATH
THREADS_FLAG=native; export THREADS_FLAG
export TEMP=/tmp
export TMPDIR=/tmp
umask 022
6.修改内核参数
vi /etc/sysctl.conf
fs.file-max = 6815744
kernel.sem = 250 32000 100 128
kernel.shmmni = 4096
kernel.shmall = 1073741824
kernel.shmmax = 4398046511104
kernel.panic_on_oops = 1
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
fs.aio-max-nr = 1048576
net.ipv4.ip_local_port_range = 9000 65500
sysctl --system
7.安装依赖包
yum install bc gcc gcc-c++ binutils compat-libcap1 compat-libstdc++ dtrace-modules dtrace-modules-headers
dtrace-modules-provider-headers dtrace-utils elfutils-libelf elfutils-libelf-devel fontconfig-devel glibc glibc-devel
ksh libaio libaio-devel libdtrace-ctf-devel libX11 libXau libXi libXtst libXrender libXrender-devel libgcc librdmacm-devel
libstdc++ libstdc++-devel libxcb make smartmontools sysstat
8.上传压缩包，这里为了省事直接放到了根目录
yum -y install zip unzip
su - oracle
unzip LINUX.X64_193000_db_home.zip -d /u01/app/oracle/product/19.2.0/db_1/
9.安装oracle数据库
./runInstaller
netca
dbca