Historical Analysis by DB Blocks

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On this panel, you can select detailed items of database data set blocks/CIs analysis information. DB Historical Data Analyzer shows the historical trend of the selected items for the database data set group identified by the DBNAME and DDNAME fields.

The following figure shows the Historical Analysis by DB Blocks panel.

Figure 1. Historical Analysis by DB Blocks
 
                         HISTORICAL ANALYSIS BY DB BLOCKS
 COMMAND ===>
 
   DBNAME = DSCRSDVN   DDNAME = DSCRSDV0   DSG = 01     1st Entry  = 03/26/2020
   DB-ORG = HDAM                           ACC = ESDS   Last Entry = 10/07/2021
                                                        Entries    = 00076
   Select one of the following groups and press ENTER. 
 
   GROUP NUMBER ===> _         Enter S in front of items to be processed. 
 
                    1. _ Total number of blocks
                       _ Total number of blocks with reusable free space
                       _ Total number of blocks with no reusable free space
                       _ Total number of empty blocks 
 
                    2.   Total bytes of reusable free space 
 
                    3. _ Percent of blocks with reusable free space
                       _ Percent of empty blocks 
 
   ENTRIES TO BE SELECTED 
 
           From Date = 10 / 01 / 2020    May specify the desired date
           To Date   = 10 / 07 / 2021    Input format is "MM/DD/YYYY"

Select a group number (1 to 3), and select one or more items under the selected group, if necessary. Press Enter to pass the control to ICU, or enter END to return to the Graph Selection Menu panel.

The items shown on this panel are:

Group number 1
  • Total number of blocks/CIs
  • Total number of blocks/CIs that have reusable free space from the viewpoint of bitmaps
  • Total number of blocks/CIs that have no reusable free space from the viewpoint of bitmaps. Non-reusable free space is a free space element smaller than the longest segment in the data set (as defined in the DBD).
  • Total number of empty blocks/CIs
Group number 2
Total bytes of reusable free space
Group number 3
  • The percentage of blocks/CIs that have reusable free space from the viewpoint of bitmaps within the total number of blocks/CIs
  • The percentage of empty blocks/CIs within the total number of blocks/CIs

The dates shown on this panel are:

From Date
This default date is the key date entry of the last one year old (actually 372 days) of HISTORY data set record or the key date entry of the first HISTORY data set record if the oldest record was created within a year.

Specify the desired date if necessary.

Note: The from date might be adjusted because the range between "From Date" and "To Date" must be a multiple of 12.
To Date
This default date is the key date entry of the latest HISTORY data set record of the selected database data set.

Specify the desired date if necessary.

Note: If an image copy data set is used by the HD Pointer Checker run, the date is when the image copy data set was created.