http://yum.oracle.com/repo/OracleLinux/OL7/latest/x86_64/getPackage/oracle-database-preinstall-19c-1.0-1.el7.x86_64.rpm

https://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.html

yum localinstall -y oracle-database-preinstall-19c-1.0-1.el7.x86_64.rpm安装完成之后 进行安装yum localinstall -y oracle-database-preinstall-19c-1.0-1.el7.x86_64.rpm

Total size: 6.9 G
Installed size: 6.9 G
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transactionInstalling : oracle-database-ee-19c-1.0-1.x86_64                                                                                           1/1
[INFO] Executing post installation scripts...
[INFO] Oracle home installed successfully and ready to be configured.
To configure a sample Oracle Database you can execute the following service configuration script as root: /etc/init.d/oracledb_ORCLCDB-19c configureVerifying  : oracle-database-ee-19c-1.0-1.x86_64                                                                                           1/1 Installed:oracle-database-ee-19c.x86_64 0:1.0-1                                                                                                          Complete!

https://www.cnblogs.com/jinanxiaolaohu/p/9826653.html

https://www.cnblogs.com/jinanxiaolaohu/p/10015624.html

 vim /etc/init.d/oracledb_ORCLCDB-19c

export ORACLE_VERSION=19c
export ORACLE_SID=ORA19C
export TEMPLATE_NAME=General_Purpose.dbc
export CHARSET=ZHS16GBK
export PDB_NAME=ORA19CPDB
export CREATE_AS_CDB=true

cd /etc/sysconfig/

cp oracledb_ORCLCDB-19c.conf  oracledb_ORA19C-19c.conf

root 用户执行命令:
/etc/init.d/oracledb_ORCLCDB-19c configure

vim /etc/profile.d/oracle19c.sh增加内容为:
export  ORACLE_HOME=/opt/oracle/product/19c/dbhome_1
export  PATH=$PATH:/opt/oracle/product/19c/dbhome_1/bin
export  ORACLE_SID=ORA19C

passwd oracle

sqlplus / as sysdba

show pdbs

CREATE TRIGGER open_all_pdbsAFTER STARTUP ON DATABASE
BEGINEXECUTE IMMEDIATE 'alter pluggable database all open';
END open_all_pdbs;
/