一 、版本及规划
1.版本选择
oracle 19.3.0 + centos7.6_64
操作系统： CentOS-7-x86_64-DVD-1908.iso
集群： Oracle Database Grid Infrastructure 19.3.0.0.0 for Linux x86-64.zip
数据库： Oracle Database 19.3.0.0.0 for Linux x86-64.zip
2.主机IP规划
主机名 public ip Virtual ip private ip scan ip
节点1: rac1 192.168.1.141 192.168.1.142 192.168.10.1 192.168.1.147、148、149
节点2: rac2 192.168.1.143 192.168.1.144 192.168.10.3 192.168.1.147、148、149
#节点3: rac3 192.168.1.145 192.168.1.146 192.168.10.5 192.168.1.147、148、149 # 预留
#DG dg 192.168.1.150 # 预留
存储 openfiler 192.168.1.140、192.168.10.140
备注：Private用于心跳，Scanip用于集群对外服务。
3.ASM磁盘组规划
ASM磁盘组 用途 大小 冗余
CRS ocr、voting file、19c grid管理库 100G+100G+100G NORMAL
DATA 数据文件 200G+200G NORMAL
RECO RECO 150G extn
#备注：共享磁盘使用使用openfiler提供，过程省略。
openfiler： openfileresa-2.99.1-x86_64-disc1.iso
虚拟机： 选择rh5_64，配置为2双网卡、1cpu、512M内存、20G系统盘+500G数据盘*3
安装参考： https://jingyan.baidu.com/article/046a7b3ebe6818f9c27fa9ef.html
安装后登录： https://192.168.1.140:446/ 用户名：openfiler 口令：password
二、环境准备
2.1.主机环境配置
1.修改主机名
### rac1
[root@server ~]# hostnamectl --static set-hostname rac1
### rac2
[root@server ~]# hostnamectl --static set-hostname rac2
1.关闭防火墙
### rac1 rac2
[root@server ~]# systemctl stop firewalld.service
[root@server ~]# systemctl disable firewalld.service
[root@server ~]# systemctl status firewalld.service
2.关闭selinux
### rac1 rac2###
[root@server ~]# setenforce 0 #临时设置SELinux 成为permissive模式， 1为enforcing模式
#[root@server ~]# setenforce Permissive #或者
[root@server ~]# sed -i "s/^SELINUX=.*/SELINUX=Permissive/" /etc/selinux/config #重启生效
3.修改hosts文件
### rac1 rac2###
[root@server ~]# cat >> /etc/hosts <<'EOF'
# add for rac 19c
# Public
192.168.1.141 rac1
192.168.1.143 rac2
# Virtual
192.168.1.142 rac1-vip
192.168.1.144 rac2-vip
# Private
192.168.10.141 rac1-priv
192.168.10.143 rac2-priv
# SCAN
192.168.1.147 rac-scan
#192.168.1.148 rac-scan # do not use dns
#192.168.1.149 rac-scan # do not use dns
EOF
4.修改内核参数，添加配置内容至 "/etc/sysctl.conf" .
### rac1 rac2###
[root@server ~]# cat >>/etc/sysctl.conf <<'EOF'
# add for oracle by me
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
net.ipv4.conf.all.rp_filter = 2
net.ipv4.conf.default.rp_filter = 2
fs.aio-max-nr = 1048576
net.ipv4.ip_local_port_range = 9000 65500
EOF
[root@server ~]# /sbin/sysctl -p #重启生效
5.修改 /etc/security/limits.conf，在最后添加配置内容
[root@server ~]# cat >>/etc/security/limits.conf <<'EOF'
#add for oracle by me
oracle soft nofile 1024
oracle hard nofile 65536
oracle soft nproc 16384
oracle hard nproc 16384
oracle soft stack 10240
oracle hard stack 32768
oracle hard memlock 134217728
oracle soft memlock 134217728
grid soft nofile 1024
grid hard nofile 65536
grid soft nproc 16384
grid hard nproc 16384
grid soft stack 10240
grid hard stack 32768
grid soft memlock 134217728
grid hard memlock 134217728
EOF
6.安装必要包
# From Public Yum or ULN
[root@server ~]# yum install -y
binutils
compat-libstdc++-33
compat-libstdc++-33.i686
gcc
gcc-c++
glibc
glibc.i686
glibc-devel
glibc-devel.i686
ksh
libgcc
libgcc.i686
libstdc++
libstdc++.i686
libstdc++-devel
libstdc++-devel.i686
libaio
libaio.i686
libaio-devel
libaio-devel.i686
libXext
libXext.i686
libXtst
libXtst.i686
libX11
libX11.i686
libXau
libXau.i686
libxcb
libxcb.i686
libXi
libXi.i686
make
sysstat
unixODBC
unixODBC-devel
zlib-devel
zlib-devel.i686
compat-libcap1 # add after check
9。其他
# 1）NTP配置
使用RAC自带ctssd时间同步进程，这里关闭系统NTP
### rac1 rac2
[root@server ~]# systemctl stop chronyd
systemctl disable chronyd
mv /etc/chrony.conf /etc/chrony.conf.bak
# 2) 关闭avahi
[root@server ~]# systemctl stop avahi-dnsconfd
systemctl stop avahi-daemon
systemctl disable avahi-dnsconfd
systemctl disable avahi-daemon
# 3) 关闭THP
[root@server ~]# cat >>/etc/rc.d/rc.local <<'EOF'
# add for rac to disable THP
if test -f /sys/kernel/mm/transparent_hugepage/enabled; then
echo never > /sys/kernel/mm/transparent_hugepage/enabled
fi
if test -f /sys/kernel/mm/transparent_hugepage/defrag; then
echo never > /sys/kernel/mm/transparent_hugepage/defrag
fi
EOF
[root@server ~]# chmod +x /etc/rc.d/rc.local
[root@server ~]# reboot
#安装grid检查报错后添加
mv /etc/ntp.conf /etc/ntp.conf.orig
2.2 用户环境配置
1.创建用户和组
[root@server ~]# groupadd -g 54321 oinstall
groupadd -g 54322 dba
groupadd -g 54323 oper
groupadd -g 54324 backupdba
groupadd -g 54325 dgdba
groupadd -g 54326 kmdba
groupadd -g 54327 asmdba
groupadd -g 54328 asmoper
groupadd -g 54329 asmadmin
groupadd -g 54330 racdba
[root@server ~]# useradd -u 54321 -g oinstall -G dba,oper,backupdba,dgdba,kmdba,asmdba,racdba oracle
[root@server ~]# useradd -u 54322 -g oinstall -G dba,asmdba,asmoper,asmadmin,racdba grid
[root@server ~]# passwd oracle
[root@server ~]# passwd grid
备注：常见用户组说明
------------------------------------------------------------------------------------------
组 角色 权限
oinstall 安装和升级oracle软件
dba sysdba 创建、删除、修改、启动、关闭数据库，切换日志归档模式，备份恢复数据库
oper sysoper 启动、关闭、修改、备份、恢复数据库，修改归档模式
asmdba sysdba自动存储管理 管理ASM实例
asmoper sysoper自动存储管理 启动、停止ASM实例
asmadmin sysasm 挂载、卸载磁盘组，管理其他存储设备
backupdba sysbackup 启动关闭和执行备份恢复（12c）
dgdba sysdg 管理Data Guard（12c）
kmdba syskm 加密管理相关操作
racdba rac管理
------------------------------------------------------------------------------------------
参考：https://blog.csdn.net/luis_ora/article/details/90054248
2.创建安装目录
[root@server ~]#
mkdir -p /u01/app/grid
mkdir -p /u01/app/19.3.0.0/grid
mkdir -p /u01/app/oracle/product/19.3.0.0/db_1
chown -R oracle:oinstall /u01/
chown -R grid:oinstall /u01/app/19.3.0.0/grid
chown -R grid:oinstall /u01/app/grid
chmod -R 775 /u01/
3.编辑profile
# 3.1 grid用户
### 1) rac1
[root@rac1~]# cat >>/home/grid/.bash_profile<<'EOF'
# grid Settings
export TMP=/tmp
export TMPDIR=$TMP
export ORACLE_HOSTNAME=$HOSTNAME
export ORACLE_BASE=/u01/app/grid
export GRID_HOME=/u01/app/19.3.0.0/grid
export DB_HOME=$ORACLE_BASE/product/19.3.0.0/db_1
export ORACLE_HOME=$GRID_HOME
export ORACLE_SID=+ASM1
export ORACLE_TERM=xterm
export BASE_PATH=/usr/sbin:$PATH
export PATH=$ORACLE_HOME/bin:$BASE_PATH
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib
export CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib
EOF
### 2) rac2
[root@rac2~]# cat >>/home/grid/.bash_profile<<'EOF'
# grid Settings
export TMP=/tmp
export TMPDIR=$TMP
export ORACLE_HOSTNAME=$HOSTNAME
export ORACLE_BASE=/u01/app/grid
export GRID_HOME=/u01/app/19.3.0.0/grid
export DB_HOME=$ORACLE_BASE/product/19.3.0.0/db_1
export ORACLE_HOME=$GRID_HOME
export ORACLE_SID=+ASM2
export ORACLE_TERM=xterm
export BASE_PATH=/usr/sbin:$PATH
export PATH=$ORACLE_HOME/bin:$BASE_PATH
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib
export CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib
EOF
# 3.2 oracle用户
### 1) rac1
[root@rac1~]# cat >> /home/oracle/.bash_profile <<'EOF'
# oracle Settings
export TMP=/tmp
export TMPDIR=$TMP
export ORACLE_HOSTNAME=$HOSTNAME
export ORACLE_UNQNAME=racdb
export ORACLE_BASE=/u01/app/oracle
export GRID_HOME=/u01/app/19.3.0.0/grid
export DB_HOME=$ORACLE_BASE/product/19.3.0.0/db_1
export ORACLE_HOME=$DB_HOME
export ORACLE_SID=racdb1
export ORACLE_TERM=xterm
export BASE_PATH=/usr/sbin:$PATH
export PATH=$ORACLE_HOME/bin:$BASE_PATH
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib
export CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib
EOF
### 2) rac2
[root@rac2~]# cat >> /home/oracle/.bash_profile <<'EOF'
# oracle Settings
export TMP=/tmp
export TMPDIR=$TMP
export ORACLE_HOSTNAME=$HOSTNAME
export ORACLE_UNQNAME=racdb
export ORACLE_BASE=/u01/app/oracle
export GRID_HOME=/u01/app/19.3.0.0/grid
export DB_HOME=$ORACLE_BASE/product/19.3.0.0/db_1
export ORACLE_HOME=$DB_HOME
export ORACLE_SID=racdb2
export ORACLE_TERM=xterm
export BASE_PATH=/usr/sbin:$PATH
export PATH=$ORACLE_HOME/bin:$BASE_PATH
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib
export CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib
EOF
# 3.3 配置互信
ssh-keygen
ssh-copy-id grid@rac2
ssh rac1 "hostname;date"
ssh rac1-priv "hostname;date"
ssh rac2 "hostname;date"
ssh rac2-priv "hostname;date"
2.3 配置共享存储
1.配置iscsi
# rac1 rac2 启动iscsi
[root@rac1 ~]# rm -qa|grep iscsi
iscsi-initiator-utils-iscsiuio-6.2.0.874-11.el7.x86_64
libvirt-daemon-driver-storage-iscsi-4.5.0-23.el7_7.6.x86_64
libiscsi-1.9.0-7.el7.x86_64
iscsi-initiator-utils-6.2.0.874-11.el7.x86_64
[root@rac1 ~]# chkconfig iscsid on
[root@rac1 ~]# systemctl start iscsid.service
[root@rac1 ~]# systemctl status iscsid.service
# rac1 rac2 配置连接
[root@rac1 ~]# iscsiadm -m discovery -t sendtargets -p 192.168.10.140 #发现
[root@rac1 ~]# iscsiadm -m node -T iqn.2006-01.com.openfiler:tsn.crs1 -p 192.168.10.140 -l #自动登录
iscsiadm -m node -T iqn.2006-01.com.openfiler:tsn.crs2 -p 192.168.10.140 -l
iscsiadm -m node -T iqn.2006-01.com.openfiler:tsn.crs3 -p 192.168.10.140 -l
iscsiadm -m node -T iqn.2006-01.com.openfiler:tsn.data1 -p 192.168.10.140 -l
iscsiadm -m node -T iqn.2006-01.com.openfiler:tsn.data2 -p 192.168.10.140 -l
#备注：
iscsiadm -m node -T iqn.2006-01.com.openfiler:tsn.data2 -p 192.168.10.140：3260 -u #先取消
iscsiadm -m node -o delete -T iqn.2006-01.com.openfiler:tsn.data2 -p 192.168.10.140:3260 #再删除
iscsiadm -m node --loginall=all #全部添加
iscsiadm -m node --logoutall=all #全部取消并删除
2.配置多路径
[root@rac1 ~]# cp /usr/share/doc/device-mapper-multipath-0.4.9/multipath.conf /etc/
[root@rac1 ~]# systemctl enable multipathd.service
[root@rac1 ~]# systemctl start multipathd.service
[root@rac1 ~]# systemctl stop multipathd.service
#----------------
[root@rac1 by-id]# ll /dev/disk/by-id/
lrwxrwxrwx. 1 root root 9 Mar 28 12:45 scsi-14f504e46494c45524575336f547a2d775956462d73554946 -> ../../sdd
lrwxrwxrwx. 1 root root 9 Mar 28 12:45 scsi-14f504e46494c45524647383354652d747439792d4b634952 -> ../../sdf
lrwxrwxrwx. 1 root root 9 Mar 28 12:45 scsi-14f504e46494c4552494e643353642d706569522d31375a53 -> ../../sdb
lrwxrwxrwx. 1 root root 9 Mar 28 12:45 scsi-14f504e46494c4552584e4c65474b2d786374442d4f786d48 -> ../../sde
lrwxrwxrwx. 1 root root 9 Mar 28 12:45 scsi-14f504e46494c455258654d4845702d4d357a442d585a5370 -> ../../sdc
[root@rac1 by-id]# ll /dev/disk/by-path/
lrwxrwxrwx. 1 root root 9 Mar 28 12:45 ip-192.168.10.140:3260-iscsi-iqn.2006-01.com.openfiler:tsn.crs1-lun-0 -> ../../sdb
lrwxrwxrwx. 1 root root 9 Mar 28 12:45 ip-192.168.10.140:3260-iscsi-iqn.2006-01.com.openfiler:tsn.crs2-lun-0 -> ../../sdc
lrwxrwxrwx. 1 root root 9 Mar 28 12:45 ip-192.168.10.140:3260-iscsi-iqn.2006-01.com.openfiler:tsn.crs3-lun-0 -> ../../sdd
lrwxrwxrwx. 1 root root 9 Mar 28 12:45 ip-192.168.10.140:3260-iscsi-iqn.2006-01.com.openfiler:tsn.data1-lun-0 -> ../../sde
lrwxrwxrwx. 1 root root 9 Mar 28 12:45 ip-192.168.10.140:3260-iscsi-iqn.2006-01.com.openfiler:tsn.data2-lun-0 -> ../../sdf
#----------------
#建议用vim修改
[root@rac1 ~]# cat >> /etc/multipath.conf <<'EOF'
multipaths {
multipath {
wwid 14f504e46494c4552494e643353642d706569522d31375a53
alias crs1
uid 54322
gid 54321
}
multipath {
wwid 14f504e46494c455258654d4845702d4d357a442d585a5370
alias crs2
uid 54322
gid 54321
}
multipath {
wwid 14f504e46494c45524575336f547a2d775956462d73554946
alias crs3
uid 54322
gid 54321
}
multipath {
wwid 14f504e46494c4552584e4c65474b2d786374442d4f786d48
alias data1
uid 54322
gid 54321
}
multipath {
wwid 14f504e46494c45524647383354652d747439792d4b634952
alias data2
uid 54322
gid 54321
}
}
EOF
[root@rac1 ~]# systemctl restart multipathd.service
# 备注：重启观察磁盘情况
---------------------------------------------------------------------------
[root@rac1 ~]# fdisk -l
[root@rac1 ~]# ll /dev/mapper/
total 0
lrwxrwxrwx. 1 root root 7 Mar 28 13:19 centos_server-root -> ../dm-0
lrwxrwxrwx. 1 root root 7 Mar 28 13:19 centos_server-swap -> ../dm-1
crw-------. 1 root root 10, 236 Mar 28 13:19 control
lrwxrwxrwx. 1 root root 7 Mar 28 13:27 crs1 -> ../dm-2
lrwxrwxrwx. 1 root root 7 Mar 28 13:27 crs2 -> ../dm-6
lrwxrwxrwx. 1 root root 7 Mar 28 13:27 crs3 -> ../dm-5
lrwxrwxrwx. 1 root root 7 Mar 28 13:27 data1 -> ../dm-4
lrwxrwxrwx. 1 root root 7 Mar 28 13:27 data2 -> ../dm-3
[root@rac1 ~]# reboot
Connection closing...Socket close.
Connection closed by foreign host.
Disconnected from remote host(192.168.1.141:22) at 13:28:45.
Type `help' to learn how to use Xshell prompt.
[D:~]$ reconnect
[D:~]$ Connecting to 192.168.1.141:22...
Connection established.
To escape to local shell, press 'Ctrl+Alt+]'.
Last login: Sat Mar 28 13:19:26 2020 from 192.168.1.10
[root@rac1 ~]# ll /dev/mapper/
total 0
lrwxrwxrwx. 1 root root 7 Mar 28 13:28 centos_server-root -> ../dm-0
lrwxrwxrwx. 1 root root 7 Mar 28 13:28 centos_server-swap -> ../dm-1
crw-------. 1 root root 10, 236 Mar 28 13:28 control
lrwxrwxrwx. 1 root root 7 Mar 28 13:29 crs1 -> ../dm-6
lrwxrwxrwx. 1 root root 7 Mar 28 13:29 crs2 -> ../dm-5
lrwxrwxrwx. 1 root root 7 Mar 28 13:29 crs3 -> ../dm-4
lrwxrwxrwx. 1 root root 7 Mar 28 13:29 data1 -> ../dm-3
lrwxrwxrwx. 1 root root 7 Mar 28 13:29 data2 -> ../dm-2
[root@rac1 ~]# fdisk -l
Disk /dev/sda: 536.9 GB, 536870912000 bytes, 1048576000 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000a2ce8
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 1048575999 523238400 8e Linux LVM
Disk /dev/mapper/centos_server-root: 531.6 GB, 531628032000 bytes, 1038336000 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/centos_server-swap: 4160 MB, 4160749568 bytes, 8126464 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/sdb: 165.0 GB, 164987142144 bytes, 322240512 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/sdc: 536.9 GB, 536870912000 bytes, 1048576000 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/sdd: 107.4 GB, 107374182400 bytes, 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/sde: 107.4 GB, 107374182400 bytes, 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/data2: 165.0 GB, 164987142144 bytes, 322240512 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/sdf: 107.4 GB, 107374182400 bytes, 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/data1: 536.9 GB, 536870912000 bytes, 1048576000 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/crs3: 107.4 GB, 107374182400 bytes, 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/crs2: 107.4 GB, 107374182400 bytes, 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/crs1: 107.4 GB, 107374182400 bytes, 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
---------------------------------------------------------------------------
修改：99-oracle-asmdevices.rules
[root@rac1 ~]# vim /etc/udev/rules.d/99-oracle-asmdevices.rules
KERNEL=="dm-*",ENV{DM_UUID}=="mpath-14f504e46494c4552494e643353642d706569522d31375a53",OWNER="grid",GROUP="asmadmin",MODE="0660"
KERNEL=="dm-*",ENV{DM_UUID}=="mpath-14f504e46494c455258654d4845702d4d357a442d585a5370",OWNER="grid",GROUP="asmadmin",MODE="0660"
KERNEL=="dm-*",ENV{DM_UUID}=="mpath-14f504e46494c45524575336f547a2d775956462d73554946",OWNER="grid",GROUP="asmadmin",MODE="0660"
KERNEL=="dm-*",ENV{DM_UUID}=="mpath-14f504e46494c4552584e4c65474b2d786374442d4f786d48",OWNER="grid",GROUP="asmadmin",MODE="0775"
KERNEL=="dm-*",ENV{DM_UUID}=="mpath-14f504e46494c45524647383354652d747439792d4b634952",OWNER="grid",GROUP="asmadmin",MODE="0775"
[root@rac1 ~]# reboot #粗暴的重启生效
[root@rac2 ~]# ll /dev/ |grep dm-* #检查是否生效
三、GRID 软件安装
在节点1上安装Oracle Grid Infrastructure软件，安装过程中会自动把软件拷贝至节点2，因此节点2上不用安装操作.
[root@rac1 ~]# su - grid
[grid@rac1 ~]$ unzip LINUX.X64_193000_grid_home.zip -d $ORACLE_HOME
[grid@rac1 ~]$ $ORACLE_HOME/oui/prov/resources/scripts/sshUserSetup.sh -user grid -hosts "rac1 rac2" -advanced -noPromptPassphrase
[grid@rac1 ~]$ exit
[root@rac1 ~]# yum localinstall /u01/app/19.3.0.0/grid/cv/rpm/cvuqdisk-1.0.10-1.rpm
[root@rac1 ~]# /u01/app/19.3.0.0/grid/runcluvfy.sh stage -pre crsinst -n "rac1,rac2" -verbose
# Make sure both virtual machines are started. Install the following package from the Oracle grid media as the "root" user.
[root@rac1 ~]# cd /media/sf_12.1.0.2/grid/rpm
[root@rac1 ~]# rpm -Uvh cvuqdisk*
[root@rac1 ~]# su - grid
[grid@rac1 ~]$ cd $ORACLE_HOME
# [grid@rac1 ~]$ORACLE_HOME/runcluvfy.sh stage -pre crsinst -n "ydb01,ydb02" -verbose #图形化界面，安装前检查跳过
[grid@rac1 ~]$ $ ./runInstaller
四、Database 安装
1.ASM新建 DATA RECO磁盘组
[grid@rac1 ~]$asmca #进入图形化 创建
# 过程省略,其中CRS存储OCR和Votedisk，DATA用于存放数据。RECO用于存储闪回区和归档.
2.安装 Database 软件。
注意：对于RAC安装，一定要选择仅设置软件（Set Up Software Only），安装完软件之后再使用DBCA建库，这是与以往 版本不同的地方。不能在软件安装过程中创建数据库了。
[root@rac1 ~]# su - oracle
[oracle@rac1 db_1]$ unzip Oracle Database 19.3.0.0.0 for Linux x86-64.zip -d $ORACLE_HOME
3.安装 Database 实例。
[root@rac1 ~]# su - oracle
[oracle@rac1 db_1]$ dbca
过程忽略。。。