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.
American physicist J. Robert Oppenheimer directed the scientific research of the Manhattan Project. Born out of a small research programme in 1939, the Manhattan Project's roots lay in the United Statesâ fears that, since the 1930s, Nazi Germany had been trying to develop nuclear weapons.