Hello Guys, I wanted to Practice Oracle Database Administrator Tutorials on my Mac OS (Host OS) So, went ahead and did the Following: 1.) Recently Installed Oracle Virtual Box Software (.dmg) on My Mac OS Successfully, 2.) Also Downloaded the VM (Virtual Machine) Image of Oracle Linux 6.4 (64bit) which can be Imported into the "Oracle Virtual Box". This so-called "Oracle Linux6.4" will be the (Guest OS) running within the Virtual Machine a.k.a. Oracle Virtual Box which in turn is Installed on my Mac OS (Host OS). Now, The confusion lies as follows: a.) I am able to start the "Oracle Linux OS" Within my Oracle Virtual Box Software successfully !! with the pwd: oracle b.) How Can I launch the "sqlplus" inmy Guest OS (Oracle Linux 6.4) from the terminal? (Terminal of the Guest OS i.e. Terminal of Oracle Linux 6.4 OS running within my Virtual Machine) c.) In the Linux Terminal, I type: ................ [oracle@oraclelinux6 ~]$ export ORACLE_SID=oracle [oracle@oraclelinux6 ~]$ sqlplus / as sysdba bash: sqlplus: command not found ............... (I use ORACLE_SID as oracle as I am assuming since the Linux $-DOllar Prompt Terminal shows "oracle@oraclelinux6") So, Does this VM Image of Oracle-Linux6.4 DOES NOT comes pre-loaded with an Oracle 10g/11g/12c Database? If so, How Can I install Oracle Database on my Linux OS now ?