CREATE USER <machine_name\user_name> IDENTIFIED EXTERNALLY;
-- in this example, "STELLAR" is the name of the client PC.
CREATE USER "STELLAR\MIKE" IDENTIFIED EXTERNALLY;
-- grant the CREATE SESSION privilege to the user
GRANT CREATE SESSION TO "STELLAR\MIKE";
-- create a user account on the client PC named "MIKE".
-- Login to Windows as "MIKE" and start sqlplus. The
-- database should connect automatically without any
-- username or password prompts.