Can not set ORACLE_BASE with oraenv command after install in CENTOS 7 server

Im trying to install Oracle DB version 12.1.0.2.0-1 in my customer server, my installer file name is oracle-instantclient12.1-basic-12.1.0.2.0-1.x86_64.rpm. After run this file with sudo rpm -i oracle-instantclient12.1-basic-12.1.0.2.0-1.x86_64.rpm I can not see any message and ORACLE_BASE or ORACLE_HOME folder is missing too. I tried some steps: 1. export ORACLE_BASE=/usr/lib/oracle/12.1/client64 2. run oraenv, it asks ORACLE_SID and ORACLE_HOME but when enter I get error **ORACLE_BASE environment variable is not being set since this information is not available for the current user ID ABC. You can set ORACLE_BASE manually if it is required. Resetting ORACLE_BASE to its previous value or ORACLE_HOME The Oracle base has been set to /home/oracle** 3. Try to reinstall rpm file but nothing good happen. With missing home folder from installer I can not set many things, I can not do like desktop enviroment with user interface. Please help me.