Oracle18CRPM安装介绍

年底了一直很忙，今天忙中偷闲安装了一下Oracle18C的RPM包安装方法。总的感觉还是比较方便的，大大的简化了oracle 的安装，让非专业的DBA也有了比较好的安装体验。下面就带来我安装过程中的一些步骤分享：

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环境介绍：
OS： Redhat 7.5 ， Mem 4G， CPU 4C，DISK 200G
```
Red Hat Enterprise Linux Server release 7.5 (Maipo)
```
下载rpm安装包：
oracle-database-ee-18c-1.0-1.x86_64.rpm
oracle-database-preinstall-18c-1.0-1.el7.x86_64.rpm
安装步骤
3.1 配置yum
#cd /etc/yum.repos.d
[rhel7.5]
name=my_repo
baseurl=file:///mnt
gpgcheck=0
```
3.2 安装依赖包：
yum -y install xorg-x11-xauth xorg-x11-utils libstdc++-devel libaio-devel ksh  compat-libcap
注意：在redhat7.5中，compat-libstdc++-33这个包是没有，请自行下载，并手动安装。

3.3 安装数据库
```
1）yum -y localinstall oracle-database-preinstall-18c-1.0-1.el7.x86_64.rpm
安装提示的信息比较多，此处省略。。。。。
```
2）rpm -ivh oracle-database-ee-18c-1.0-1.x86_64.rpm
```
warning: oracle-database-ee-18c-1.0-1.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID ec551f03: NOKEY
Preparing... ################################# [100%]
Updating / installing...
1:oracle-database-ee-18c-1.0-1 ################################# [100%]
[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-18c configure
3.4 配置数据库
在root下执行：
etc/init.d/oracledb_ORCLCDB-18c configure
```
3.5 安装完成后检查
```
该步骤执行的时间较长，需要耐心的等待。。。。
Configuring Oracle Database ORCLCDB.
Prepare for db operation
8% complete
Copying database files
31% complete
Creating and starting Oracle instance
32% complete
36% complete
40% complete
43% complete
46% complete
Completing Database Creation
51% complete
54% complete
Creating Pluggable Databases
58% complete
77% complete
Executing Post Configuration Actions
100% complete
Database creation complete. For details check the logfiles at:
/opt/oracle/cfgtoollogs/dbca/ORCLCDB.
Database Information:
Global Database Name:ORCLCDB
System Identifier(SID):ORCLCDB
Look at the log file "/opt/oracle/cfgtoollogs/dbca/ORCLCDB/ORCLCDB.log" for further details.

Database configuration completed successfully. The passwords were auto generated, you must change them by connecting to the database using 'sqlplus / as sysdba' as the oracle user.

3.5 安装检查
1）Oracle配置环境变量：
[oracle@rhel75-dev-31-81 ~]$ vi .bash_profile

export ORACLE_HOME=/opt/oracle/product/18c/dbhome_1

export ORACLE_VERSION=18c
export ORACLE_SID=ORCLCDB

PATH=$ORACLE_HOME/bin:$PATH:$HOME/.local/bin:$HOME/bin

export PATH

2）检查监听
lsnrctl status

Service "7f7a654558113bdde055025056a8c790" has 1 instance(s).

Instance "ORCLCDB", status READY, has 1 handler(s) for this service...
Service "ORCLCDB" has 1 instance(s).
Instance "ORCLCDB", status READY, has 1 handler(s) for this service...
Service "ORCLCDBXDB" has 1 instance(s).
Instance "ORCLCDB", status READY, has 1 handler(s) for this service...
Service "orclpdb1" has 1 instance(s).
Instance "ORCLCDB", status READY, has 1 handler(s) for this service...
The command completed successfully

3)登录数据库
sqlplus / as sysdba
[oracle@rhel75-dev-31-81 ~]$ sqlplus / as sysdba

SQL*Plus: Release 18.0.0.0.0 - Production on Tue Jan 15 14:50:55 2019
Version 18.3.0.0.0

Connected to:
Oracle Database 18c Enterprise Edition Release 18.0.0.0.0 - Production
Version 18.3.0.0.0

安装后的思考
1) oracle 18C大大的简化了安装的工作量。对于部署和实施来说比较方便了。
2) 网络配置自动完成。网络部分系统会自动配置生产listener.ora和tnsnames.ora文件。
3) 初始化即为容器数据库。

当然还有很多的新的特性，后续的文章会向大家一一阐述，时间有限难免有出错的地方，如有问题请大家及时指正。欢迎讨论。

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Oracle18CRPM安装介绍

etc/init.d/oracledb_ORCLCDB-18c configure

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