Steps to install Oracle 19c in CentOS 7.6 RPM mode

Steps to install Oracle 19c in CentOS 7.6 RPM mode

1. Download the required installation package:

1.1 preinstall

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

https://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.html
It is recommended to download at home or see the VPN proxy download speed in the company.

1. Installation.

yum localinstall -y oracle-database-preinstall-19c-1.0-1.el7.x86_64.rpm

Install after installation is complete

yum localinstall -y oracle-database-preinstall-19c-1.0-1.el7.x86_64.rpm
Wait for the installation results.

Different servers take different time:

The result of my installation here is:

Total size: 6.9 G
Installed size: 6.9 G
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : 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 configure
Verifying : oracle-database-ee-19c-1.0-1.x86_64 1/1

Installed:
oracle-database-ee-19c.x86_64 0:1.0-1

Complete!
Note that the configuration after the installation is complete requires the root user.

1. As with previous blogs, you need to modify the character set and other configurations:

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

https://www.cnblogs.com/jinanxiaolaohu/p/10015624.html
The modified configuration file of oracle19c is:

vim /etc/init.d/oracledb_ORCLCDB-19c
The revised content is mainly the part of the circle

Text version:

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
Corresponding to copy a parameter file

cd /etc/sysconfig/

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

1. Configure with the root user.

The root user executes the command:
/etc/init.d/oracledb_ORCLCDB-19c configure
Wait for the Oracle database to perform initialization operations.

. Processing after the completion of the execution.

Increase environment variable processing

vim /etc/profile.d/oracle19c.sh

Add content as:
export ORACLE_HOME=/opt/oracle/product/19c/dbhome_1
export PATH=$PATH:/opt/oracle/product/19c/dbhome_1/bin
export ORACLE_SID=ORA19C
Modify the password of the Oracle user:

passwd oracle
Use Oracle login for related processing

sqlplus / as sysdba
View pdb information

show pdbs
5.1 Create a trigger to automatically start pdb (Do not set the PDB boot startup Many programs can not connect to the PDB, it is recommended to use show pdbs to view the status, manual start can also. Can not create business data in the CDB, will prompt to create the user name does not meet c# ##???)

CREATE TRIGGER open_all_pdbs
AFTER STARTUP ON DATABASE
BEGIN
EXECUTE IMMEDIATE ‘alter pluggable database all open’;
END open_all_pdbs;
/