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.
Oppenheimer had brought together over 3,000 people at Los Alamos, and his efforts earned him the Presidential Medal of Merit in 1946. He was named director of the Institute for Advanced Study at Princeton University in 1947.