Assigned Roots per RAP report
This report contains a map of all root anchor points (RAPs) in the database. It gives the actual number of root segments that are randomized to each RAP. It also includes some numbers that attribute to the status of RAPs and the Distribution of RAP Chain Length report.
When the CTL data set is used, the Distribution of RAP Chain Length report reflects the change of DBD parameters.
The following figure shows an example of the report.
IMS HIGH PERFORMANCE POINTER CHECKER FOR z/OS - HDTA "ASSIGNED ROOTS PER RAP REPORT" PAGE: 1
5655-U09 DATE: 06/25/2021 TIME: 10.41.55 FABTRAPS - V3.R1
*** DBNAME: HDAMDB01 ***
DBDNAME................. HDAMDB01 DIRECT ALGORITHM NAME... DFSHDC40
DATABASE ORGANIZATION... HDAM HIGH BLOCK NUMBER....... 255
ACCESS METHOD........... VSAM RAPS PER BLOCK.......... 3
BLOCK SIZE.............. 1024 TOTAL RAPS.............. 765
COUNT OF 0-35 REPRESENTED AS FOLLOWS:
SYMBOL: 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
COUNT : 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35
COUNT GREATER THAN 35 = *
END OF DATA BLOCKS = $
EACH ENTRY IN THE TABLE BELOW REPRESENTS THE NUMBER OF ROOTS THAT HAVE RANDOMIZED TO THE CORRESPONDING RAP
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RAP # 0........1.........2.........3.........4.........5.........6.........7.........8.........9.........0
1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890
0 | A P
100 | U
200 | F K 1 P F P Z K 5
300 | P U PU P 5
400 | F K * U
500 | *
600 | F A U K
700 | A * U $
COUNT OF RAPS USED (ACTIVE) = 30 COUNT OF RAPS WITH MORE THAN 1 ROOT = 29
COUNT OF RAPS NOT USED = 735 COUNT OF RAPS WITH MORE THAN 35 ROOTS = 3
AVG. COUNT OF ROOTS ON ACTIVE RAP = 22.3 MAX. COUNT OF ROOTS ON ONE RAP = 50
AVG. COUNT OF ROOTS PER TOTAL RAP = .9 AVG. COUNT OF ROOTS PER SYNONYM CHAIN = 23.0
IMS HIGH PERFORMANCE POINTER CHECKER FOR z/OS - HDTA "ASSIGNED ROOTS PER RAP REPORT" PAGE: 2
5655-U09 DATE: 06/25/2021 TIME: 10.41.55 FABTRAPS - V3.R1
DISTRIBUTION OF RAP CHAIN LENGTHS
---------------------------------
CHAIN NUMBER NUMBER PERCENTAGE CUMULATIVE
LENGTH OF RAPS OF ROOTS OF ROOTS PERCENTAGE
------ --------- --------- ---------- ----------
1 1 1 0.1 % 0.1 %
2 0 0 0.0 % 0.1 %
3 0 0 0.0 % 0.1 %
4 0 0 0.0 % 0.1 %
5 2 10 1.5 % 1.6 %
6 0 0 0.0 % 1.6 %
7 0 0 0.0 % 1.6 %
8 0 0 0.0 % 1.6 %
9 0 0 0.0 % 1.6 %
10 3 30 4.5 % 6.1 %
11 0 0 0.0 % 6.1 %
12 0 0 0.0 % 6.1 %
13 0 0 0.0 % 6.1 %
14 0 0 0.0 % 6.1 %
15 4 60 9.0 % 15.1 %
16 0 0 0.0 % 15.1 %
17 0 0 0.0 % 15.1 %
18 0 0 0.0 % 15.1 %
19 0 0 0.0 % 15.1 %
20 4 80 12.0 % 27.1 %
21 0 0 0.0 % 27.1 %
22 0 0 0.0 % 27.1 %
23 0 0 0.0 % 27.1 %
24 0 0 0.0 % 27.1 %
25 6 150 22.4 % 49.5 %
26 0 0 0.0 % 49.5 %
27 0 0 0.0 % 49.5 %
28 0 0 0.0 % 49.5 %
29 0 0 0.0 % 49.5 %
30 6 180 26.9 % 76.4 %
31 0 0 0.0 % 76.4 %
32 0 0 0.0 % 76.4 %
33 0 0 0.0 % 76.4 %
34 0 0 0.0 % 76.4 %
35 1 35 5.2 % 81.6 %
36+ 3 123 18.4 % 100.0 %
------ --------- --------- ---------- ----------
TOTAL 30 669 100.0 %
FABT3602I 669 TYPE R RECORDS PROCESSED
NOTE : SYNONYM - ANY ROOT RANDOMIZED TO THE SAME RAP (RAP COUNT GREATER THAN 1)
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FABT3700I NO MORE RECORDS FOR THIS FILE