Blocks_Per_Page=integer

    Lets you restore a database with larger mixed page sizes than
    existed in the original database. This creates new free space on
    each page in the storage area file and does not interfere with
    record clustering. RMU Restore ignores this qualifier when it
    specifies an integer less than or equal to the current page size
    of the area.

    You might want to increase the page size in storage areas
    containing hash indexes that are close to full. By increasing
    the page size in such a situation, you prevent the storage area
    from extending.