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:
PRINCETON, N. J., Feb. 18--Dr. J. Robert Oppenheimer, the nuclear physicist, died here tonight at the age of 62. A spokesman for the family said Dr. Oppenheimer died at 8 o'clock in his home on the grounds of the Institute for Advanced Study. He had been ailing since early last year with cancer of the throat.
At the Trinity test site on July 16, 1945, Oppenheimer was heard to say, âLord, these affairs are hard on the heart.â. J. Robert Oppenheimer was born in New York City on April 22, 1904. He died on February 18, 1967 at Princeton, New Jersey. He was 62 years old. He was fascinated by science from a very early age.