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Oracle Database 12c : Install
Install Oracle Database 12c.
[1] Login and work with oracle admin user which you create in pre-requirements settings.
Download Oracle Databse 12c for Linux and upload on your server.
⇒ http://www.oracle.com/technology/software/products/database/index.html
[3] After uploading Oracle files, move to a tmp directory and run an Installer like follows.
[[email protected] ~]$
cd tmp

[[email protected] tmp]$
unzip linuxamd64_12102_database_1of2.zip

[[email protected] tmp]$
unzip linuxamd64_12102_database_2of2.zip

[[email protected] tmp]$
[4] Oracle Installer starts like follows. First, Set your email address and password for receiving some infomation from Oracle like security issues and so on.
[5] On this example, Select "Install database software only".
[6] On this example, Select "Single Instance Database ***".
[7] Select your language.
[8] Select which edition you install.
[9] Specify the base directory and files for Oracle. On this example, keep default and proceed to next.
[10] Specify the installed directory. On this example, keep default and proceed to next.
[11] Specify the priviledged group. On this example, keep default and proceed to next.
[12] Pre-requirements are checked. If some settings are not configured for recomendations, notification is displayed like follows. Confirm them again.
[13] The summary is shown for configuration. Click "Install" if it's OK all.
[14] Installation starts.
[15] Following screen is shown, then open a terminal and execute follwong commands with the root user.
[[email protected] ~]#

Changing permissions of /u01/app/oraInventory.
Adding read,write permissions for group.
Removing read,write,execute permissions for world.

Changing groupname of /u01/app/oraInventory to oinstall.
The execution of the script is complete.
[[email protected] ~]#
[[email protected] ~]#

Performing root user operation.

The following environment variables are set as:
    ORACLE_OWNER= oracle
    ORACLE_HOME=  /u01/app/oracle/product/12.1.0/dbhome_1

Enter the full pathname of the local bin directory: [/usr/local/bin]:   
# Enter

   Copying dbhome to /usr/local/bin ...
   Copying oraenv to /usr/local/bin ...
   Copying coraenv to /usr/local/bin ...

Creating /etc/oratab file...
Entries will be added to the /etc/oratab file as needed by
Database Configuration Assistant when a database is created
Finished running generic part of root script.
Now product-specific root actions will be performed.
[16] Installation completed. Click "Close" button.
[17] Set Environment variables for Oracle user.
[[email protected] ~]$
vi ~/.bash_profile
# add to the end

export ORACLE_HOME=/u01/app/oracle/product/12.1.0/dbhome_1
[[email protected] ~]$
source ~/.bash_profile

[[email protected] ~]$
rm -rf tmp