what is the equivalent command for oracle for creating DB and user w.r.t mysql

below commands used for generate DB and user in mysql.what is the equivalent command for oracle.

CREATE DATABASE xyz; CREATE USER 'xyz'@'localhost' IDENTIFIED BY 'xyz'; grant all on xyz.* to 'alfresco5'@'localhost' identified by 'xyz' with grant option; grant all on xyz.* to 'xyz'@'localhost.localdomain' identified by 'xyz' with grant option;