sqlplus command not found after installing oracle 12c I have going at it for the last 12 hours... I installed Oracle 12c on rhel7, the first installation didn’t go well so Installed a second one without changing the first installation; I created a new folder and proceeded with the installation. However I have not been able to connect to the database in anyway. When I try the command: env|grep -i ORACLE_HOME I get : ORACLE_HOME= /u01/app/oracle/product/12.1.0/dbhome_2/spfileorcl.ora. Can you suggest a solution on how to setup my environment variable based on the configurations in the picture?
export ORACLE_HOME=/home/christian/app/christian/product/12.1.0/dbhome_2
export PATH=$ORACLE_HOME/bin:$PATH
export ORACLE_SID=orcl


Alternatively:

. oraenv


And provide orcl as ORACLE_SID.