Start Oralce:
sudo /etc/init.d/oracle-xe start
Stop Oracle:
sudo /etc/init.d/oracle-xe stop
Re-config Oracle:
sudo /etc/init.d/oracle-xe configure
Or there is another way
sudo su - oracle
Start Oralce:
sudo /etc/init.d/oracle-xe start
Stop Oracle:
sudo /etc/init.d/oracle-xe stop
Re-config Oracle:
sudo /etc/init.d/oracle-xe configure
Or there is another way
sudo su - oracle