This screen provides utilization information in a graphical
    format for each row in a specific row cache.

    This screen is organized in units of cache entries. Each
    character of the screen identifies a single cache entry.

    The number of users sharing a particular row cache entry is known
    as the share-count. This screen is based on a display-threshold
    that is compared against the number of users sharing a particular
    row. Initially, the display threshold value is 1. The display
    threshold can be configured, as described below.

    Cache entries are identified as follows:

    o  Space (" ")- Cache entry is empty

    o  Dot (".")- A cache entry with a share-count less than the
       display-threshold

    o  Equal sign ("=")- A cache entry with a share-count identical
       to the display-threshold

    o  Digit from 2 through 9- A cache entry with share-count that
       exceeds the display-threshold but is less than ten, identified
       by the respective digit

    o  Asterisk ("*")- A cache entry with share-count that exceeds
       the display-threshold by 10 or more

    o  Highlighted entry- Cache entry has been modified

    o  T- Cache entry is too large for the buffer

    A row of "X"s delineates the end of the row cache. All blank
    lines following the row of "X"s can be ignored.

    As a general measure of row cache utilization when using the
    default display-threshold, a display containing a lot of blanks
    or dots is very bad; this probably indicates that the row cache
    is sized too large for the current number of users accessing
    the database. A display containing a lot of equal signs (=)
    is bad since this indicates non-sharing of rows; this probably
    indicates that using a row cache may not be appropriate. A
    display containing a lot of numeric digits is good, since
    this indicates good row sharing. A display containing a lot
    of asterisks (*) is great, since this indicates tremendous row
    sharing.

    You can use the Config menu option to filter the Row Cache
    Utilization screen. Select this option, by typing the letter C,
    to display the configuration submenu. The configuration submenu
    contains a single option: "Filter Utilization Display". Selecting
    this option will display the prompt "Enter row cache threshold
    (0+) [current=1]: ". The threshold indicates the number of users
    sharing a row to be displayed; for instance, if you entered "5"
    then only those rows being accessed by 5 or more users will be
    displayed. Also, those rows shared by exactly 5 users would be
    identified using an equal sign (=) and those more than 5 would
    be identified using the digits 6 through 9 or the asterisk (*) if
    more than nine users are sharing a row.

    When there is more than one page of the Row Cache Utilization
    screen, the header section contains the page number currently
    displayed and the total number of pages in the screen. Use the
    left angle bracket (<) key to go to the previous page and the
    right angle bracket (>) key to go to the next page of the screen.

    The Row Cache Utilization screen is not recorded in the binary
    output file produced using the Output qualifier. Consequently,
    this screen is not available when you replay a binary file using
    the Input qualifier.