Hi List, Does the following SQL touch every single row immediately? ALTER TABLE supplier ADD (supplier_tax_id varchar2(10), supplier_timezone varchar2(5) ); What is the best way to add column(s) to an existing table with millions of rows? Thanks, Roger This e-mail is intended solely for the person or entity to which it is addressed and may contain confidential and/or privileged information. Any review, dissemination, copying, printing or other use o ____________________________________________________________________ This email has been scanned for all viruses by the MessageLabs Email Security System.