ORACLE_HOME: directory will be installed oracle software, point to the location oracle binaries should be installed to.
ORACLE_BASE: top-level directory for oracle software on the host server
ORACLE_SID: unix defines a user session should be connected to that server instance, no more than 8 characters.
ORACLE_OWNER
ORACLE_TERM
DISPLAY
SHLIB_PATH
LD_LIBRARY_PATH:. Specify the location of the shared object library oracle on unix systems, this variable usually points to $ ORACLE_HOME / lib or $ ORACLE_HOME / lib32 directory
ORA_NLS33
NLS_LANG
PATH: tells the operating system looks for executable files in those directories unix
TMPDIR
TNS_ADMIN: Save in oracle net profile
DBCA_RAW_CONFIG
TERM
CLASSPATH
TWO_TASK: Specifies a default will be used in a unix system oracle net connection string - If the user does not specify any connection string