Allocation of disk pages in a storage space is frozen while an online archive is being made. Therefore, pages that contain TEXT or BYTE data at the time that the archive began are not freed and overwritten by new pages before they can be written to the archive tape. As soon as all the used pages in the chunk are archived, allocation in that chunk can resume. Normal row data can go on changing while the archive is being made because changed dbspace pages can be written, or rewritten, on the tape at any point.