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Guide to install Oracle 18c on Centos 7.1

Start a new antlet based on CentOS 7.1 lxc template and setup a bridge Nic.

Don’t perform yum update

Copy the following files to /opt

  • oracle-database-preinstall-18c-1.0-1.el7.x86_64.rpm
  • oracle-database-ee-18c-1.0-1.x86_64.rpm

cd /opt and execute the following commands

  • yum -y localinstall oracle-database-preinstall-18c-1.0-1.el7.x86_64.rpm
  • yum -y localinstall oracle-database-ee-18c-1.0-1.x86_64.rpm


Modify the following files (use your own server hostname)

  • /etc/hosts
    • Add ip-address oracledbserver1
  • /etc/hostname
    • Replace localhost with

Execute hostnamectl set-hostname --transient

Reboot server

Execute /etc/init.d/oracledb_ORCLCDB-18c configure

Change password for the oracle user

  • passwd oracle


Login in with oracle user

Modify the following file

  • /home/oracle/.bash_profile
    • Add 
      • export ORACLE_HOME=/opt/oracle/product/18c/dbhome_1
      • export ORACLE_SID=ORCLCDB
    • Append to Path
      • :$ORACLE_HOME/bin

Execute source /home/oracle/.bash_profile


Verify if the server hostname is correct in the following files

  • /opt/oracle/product/18c/dbhome_1/network/admin/listener.ora
  • /opt/oracle/product/18c/dbhome_1/network/admin/tnsnames.ora


Execute sqlplus '/ as sysdba'



Change Password for sys and system

  • ALTER USER sys IDENTIFIED BY <Password>;
  • ALTER USER system IDENTIFIED BY <Password>;


Exit sqlplus


You should be able to connect with SQL Developer (client) to the database via server_ip port 1521

Oracle Enterprise Manager https://server_ip:5500/em (needs flash plugin)


used resources