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 (1904-1967) was an American theoretical physicist and director of the Los Alamos National Laboratory, one of four laboratories involved in the Manhattan Project to develop the first atomic bomb. He was also a secret member of the Communist Party.