Checksum_Only

    Specify with the Areas qualifier to perform only checksum
    verification of pages. This reduces the degree of verification
    done on a database page. While the RMU Verify command executes
    faster with the Checksum_Only qualifier than without it, it does
    not verify pages completely. This qualifier allows you to make
    trade-offs between speed of verification and thoroughness of
    verification. For more information on these trade-offs, see the
    Oracle Rdb Guide to Database Maintenance.

    If this command finds a problem with a certain page, then that
    page can be verified in depth by using other qualifiers, such as
    Indexes, Areas, or Lareas.

    Note that you can accomplish the same degree of verification
    during a backup operation by specifying the Checksum qualifier
    with the RMU Backup command. The advantage of specifying the
    Checksum qualifier with the RMU Backup command is that the
    checksum operation takes place concurrently with the backup
    operation.

    See the Usage Notes entry in this command for the rules that
    determine which qualifiers can be used in combination on the same
    RMU Verify command line.

    The default is for full verification of pages.