Oracle provides alter table syntax to modify data columns in-place in this form: alter table table_name modify column_name datatype; If you are brave you can use a single alter table syntax to modify multiple columns:
Julius Robert Oppenheimer (22 April 1904 â 18 February 1967) was an American physicist and the scientific director of the Manhattan Project.
Julius Robert Oppenheimer, Father of the Atomic Bomb. Overview of J. Robert Oppenheimer: Though J. Robert Oppenheimer easily grasped both the sciences and humanities, he decided to graduate from Harvard in 1925 with a degree in chemistry.