Linux_oracle Installation Tutorials

First, prepare for the installation of Oracle
1. Create a system user and user group that runs the Oracle database
Groupadd Oinstall #创建用户组oinstall
Groupadd DBA #创建用户组dba
Useradd-g oinstall-g dba-m Oracle #创建oracle用户 and joins the Oinstall and DBA user groups
Useradd-g oinstall-g dba-m Oracle #创建oracle用户 and joins the Oinstall and DBA user groups
passwd Oracle #设置oracle密码

ID Oracle # View new Oracle Users

Groupadd Oinstall
Groupadd dba
USERADD-G oinstall-g dba-m Oracle
USERADD-G oinstall-g dba-m Oracle
passwd Oracle
ID Oracle

2. Modifying operating system core parameters
1) Modify the user's shell limit, modify the/etc/security/limits.conf file
Oracle Soft Nproc 2047
Oracle Hard Nproc 16384
Oracle Soft Nofile 1024
Oracle Hard Nofile 65536
2) Modify the/etc/pam.d/login file
Session required/lib/security/pam_limits.so
Session Required Pam_limits.so
3) Modify the Linux kernel, modify the/etc/sysctl.conf file
Fs.file-max = 6815744
FS.AIO-MAX-NR = 1048576
Kernel.shmall = 2097152
Kernel.shmmax = 2147483648
Kernel.shmmni = 4096
Kernel.sem = 250 32000 100 128
Net.ipv4.ip_local_port_range = 9000 65500
Net.core.rmem_default = 4194304
Net.core.rmem_max = 4194304
Net.core.wmem_default = 262144
Net.core.wmem_max = 1048576
4) to make the/etc/sysctl.conf change take effect immediately, execute the following command. Input: Sysctl-p
5) Edit/etc/profile, enter command: Vi/etc/profile
if [$USER = "Oracle"]; Then
if [$SHELL = "/bin/ksh"]; Then
Ulimit-p 16384
Ulimit-n 65536
Else
Ulimit-u 16384-n 65536
Fi
Fi
6) Create database software directory and data file directory, directory location, according to their own situation, pay attention to disk space, here I put it under the Oracle user
Mkdir/home/oracle/app
Mkdir/home/oracle/app/oracle
Mkdir/home/oracle/app/oradata
Mkdir/home/oracle/app/oracle/product

7) Change Directory owner is owned by Oracle user
Chown-r Oracle:oinstall/home/oracle/app

8) Configure the environment variables for the Oracle user, first, switch to the newly created Oracle user,
Input: Su–oracle, and then directly in the input: Vi. bash_profile
Press I to edit. Bash_profile, enter edit mode to add the following:
Export Oracle_base=/home/oracle/app
Export Oracle_home= $ORACLE _base/oracle/product/11.2.0/dbhome_1
Export ORACLE_SID=ORCL
Export path= $PATH: $HOME/bin: $ORACLE _home/bin
Export Ld_library_path= $ORACLE _home/lib:/usr/lib
--Shut down the firewall CentOS 7.2 uses firewall as a firewall by default
Su Root #切换到root用户
Systemctl status Firewalld.service #查看防火墙状态, running
Systemctl Stop Firewalld.service #关闭防火墙
Systemctl status Firewalld.service #再次查看防火墙状态, found closed
Systemctl Disable Firewalld.service #禁止使用防火墙 (restart is also prohibited)
Turn off SELinux (requires reboot to take effect)
Vi/etc/selinux/config
Cat/etc/selinux/config
Selinux=disabled #此处修改为disabled
selinuxtype=targeted

Ii. Formal Oracle installation process
2.1.1 CentOS has installed the desktop, if there is no desktop, please execute (Yum will not be Baidu, this side do not repeat)
Yum-y groups Install "GNOME Desktop" This command seems to be wrong
Yum-help Viewing Help Documents
Yum-y groupinstall Install "GNOME Desktop"

Start XRDP and set boot boot
/ETC/INIT.D/XRDP restart
XRDP Remote Desktop Access CentOS6.6
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Linux_oracle Installation Tutorials