1. ADABAS INTERNALS FOR PROGRAMMERS
Jim Poole

2. CONTENTS BY THE NUMBERS 3 DIRECT CALL EQUIVALENTS TO NATURAL/SQL 4
DIRECT CALL BASICS
DIRECT CALL PATH
INTERNALS OVERVIEW
DATA STORAGE
ASSOCIATOR OVERVIEW
ADDRESS CONVERTER
INVERTED LISTS
WORK OVERVIEW
GLOSSARY OF POOLS,QUEUES,TABLES,DB.PARMS
OTHER KEY ADARUNS (AND RSP CODES)
FB,IFB,(DE)COMPRESSION
COMMAND PROCESSING
ANALYZE CODE
DDLOG

3. BY THE NUMBERS V4,V5,V6,V7 -> V8
THE MAX:
RECORDS PER FILE: M or 4.3G (3-BYTE,4-BYTE(ISN)
FILES PER DATABASE: or 65K or (1B,2B FNR)
DECOMPRESSED LRECL: K
COMPRESSED LRECL: DATASTORAGE BLKSIZE MINUS 4
3390= =
(V8 SPANNED BLOCKS)
FIELDS PER FILE: *36-10=926
4*ASSOBLKSIZE FOR FLDS,DEs,etc
MU/PE OCCURRANCES: (V8 65K)
SUPERDE PARENT FIELDS: 1 TO 20
FIELD TYPES: (SEE UTILITIES MANUAL: ADACMP)

4. DIRECT CALL EQUIVALENTS TO NATURAL/SQL
COMMAND
NATURAL
NATIVE SQL OP
(IMPLICIT AT SIGNON)
CONNECT CL
(IMPLICIT AT SIGNOFF)
DBCLOSE
L1/L4
(CID)
GET
READ BY ISN
(read records from FIND)
READ ISN
READ ISN with SEQUENCE
L2/L5
CID
READ PHYSICAL
(default READ)
L3/L6
CID
READ LOGICAL
(READ BY DE values) L9
CID
HISTOGRAM
NOTE 1: L4,L5,L6 ARE READ WITH HOLD
NOTE 2: CID IS COMMAND ID REQUIRED
(CID) IS OPTIONAL DEPENDING ON FUNCTION

5. DIRECT CALL TO NATURAL/SQL cont.
COMMAND
NATURAL
NATIVE SQL
S1/S4
(CID)
FIND S2
(CID)
FIND SORTED BY
FIND with
ORDER BY clause
S9 (CID)
(sorted by)
SORT
S8 (CID)
(compare ISN lists)
COMPARE
A1/A4 (CID)
UPDATE
E1/E4 (CID)
DELETE
N1 (CID)
STORE
INSERT
N2 (CID)
STORE USING NUMBER
INSERT WHERE ISN=
NOTE 2: CID IS COMMAND ID REQUIRED
(CID) IS OPTIONAL DEPENDING ON FUNCTION

6. DIRECT CALL TO NATURAL/SQL cont.
COMMAND
NATURAL
NATIVE SQL ET
END TRANSACTION
COMMIT WORK BT
BACKOUT TRANSACTION
ROLLBACK WORK
RC (CID)
RELEASE
(close loop)
CLOSE RI
RELEASE
RELEASE ISN HI
(put ISN on hold)
HOLD ISN RE
GET TRANSACTION DATA
READ USERDATA
NOTE 2: CID IS COMMAND ID REQUIRED
(CID) IS OPTIONAL DEPENDING ON FUNCTION

7. DIRECT CALL BASICS CALL ADABAS USING CONTROL-BLOCK,
SEE ADABAS COMMAND REF MANUAL
CALL ADABAS USING CONTROL-BLOCK,
FORMAT-BUFFER, RECORD-BUFFER
SEARCH-BUFFER, VALUE-BUFFER
ISN-BUFFER
CONTROL-BLOCK (req) BYTES
FORMAT-BUFFER (opt) FIELDS TO READ/UPDATE
RECORD-BUFFER (opt) VALUES RETURNED/UPDATED
SEARCH-BUFFER (opt) SEARCH CRITERIA
VALUE-BUFFER (opt) SEARCH VALUES
ISN-BUFFER (opt) ISNs RESULTING FROM SEARCH

8. DIRECT CALL BASICS (CONTROL-BLOCK)
OFF
SET
LEN
FIELD 00 2
RESERVED 02 2
COMMAND CODE
L1,S1,ET, etc 04 4
COMMAND ID
USED FOR: -ISN LIST ID
-SEQ CMD PTR
-ID IFB
Eg HEX: NATURAL
1100 STATEMENT NO.
PGM LEVEL
CARDINAL NO. 0A 2
RESPONSE CODE 08
FILE NUMBER
1B DBID, 1B FNR 0C 4
ISN 10
ISN LOWER LIMIT 14
ISN QUANTITY

9. DIRECT CALL BASICS (CONTROL-BLOCK)
OFF
SET
LEN
FIELD 18 2
FORMAT BUFFER LENGTH 1A 2
RECORD BUFFER LENGTH 1C 2
SEARCH BUFFER LENGTH 1E 2
FORMAT BUFFER LENGTH 20 2
ISN BUFFER LENGTH 22 1
COMMAND OPTION 1 23
COMMAND OPTION 2 24 8
ADDITIONS 1
L3,L6,L9 SEQ DE
S2,S SORT Des
S ISN LIST CIDs

10. DIRECT CALL BASICS (CONTROL-BLOCK)
OFF
SET
LEN
FIELD 2C 4
ADDITIONS 2
COMPRESSED LRECL
DECOMPRESSED LRECL
RSP SUB-CODE 30 8
ADDITIONS 3
PASSWORD 38 8
ADDITIONS 4
CIPHER 40 8
ADDITIONS 5
GLOBAL FORMAT ID if
First 2 bits set to 11 48 4
COMMAND TIME 4C 4
USER AREA

11. DIRECT CALL BASICS (FORMAT BUFFER)
BA,020,A,PP,10,U.
EG.
EG.
BA,PP.
EG.
LJ,018,A,LKC,3,U,LK ,094,A.
ELEMENTS (SEPARATED BY COMMAS):
FIELD-NAME /OCC/, LENGTH , FORMAT
FIELD-NAME /OCC1-OCC1/
FIELD-NAME “C”

12. DIRECT CALL BASICS (SEARCH BUFFER)
AS,018,A.
EG.
AS,018,A,D,BB,10,U
EG.
EG.
AS,S,AS,D,BB.
EG.
(CID1),D,AB,3,U.
ELEMENTS (SEPARATED BY COMMAS):
FIELD-NAME or CID
SAMPLE CONNECTORS:
D - AND
O - SAME DE
R - DIFFERENT DE
S THRU
N NOT used with THRU

13. DIRECT CALL PATH ADABAS PROGRAM ADALINK 148 151 152 254 255 RSP CODES
CALL ADABAS
ADALINK
DETERMINE DBID
DETERMINE CMD TYPE
CREATE ADABAS USERID
RSP CODES
SVC/
ROUTER
DB ID TABLE
ADABAS
BUILD CQE
MOVE UB TO NAB
NOTE: UB = CB+FB+RB+SB+VB+IB

14. INTERNALS OVERVIEW CMD.Q. CMD.Q. TBQ TBQ TBI TBI THREADS THREADS
NC=20-200
CMD.Q.
NC=20-200
USR-CID-INFO
LQ=20-400K
TBQ
USR-CID-INFO
LQ=20-400K
TBQ
USR-CID-INFO
LI=20-100K
TBI
USR-CID-INFO
LI=20-100K
TBI
NT=5-30
THREADS
NT=5-30
THREADS
CQE SELECT
CQE SELECT
LS=
LWP=1-5M
WORK POOL
LFP=.5-5M
FORMAT POOL
USER.Q
NU=
USR-CID-INFO
BUFFER POOL
ATTACHED
BUFFERS
LBP=30-100M
ASSO
BLKSIZE=2544
ASSO
BLKSIZE=2544
DATA
BLKSIZE=5064
DATA
BLKSIZE=5064
WORK
BLKSIZE=5724
NAB=20-200
HOLD.Q
FCB
FDT
PART 2
NH=4K-60K UI
PART 3
RECs MI NI
PLOGS AC
BLKSIZE=5724

15. DATA STORAGE (DS)
FILE A | FILE B| FILE C | unused | FILE D | unused
. . .
. . .
RABN 1
RABN 2
RABN 3
RABN N
NOTES:
FIXED ALLOCATION
FIXED BLOCKSIZE (3390= =10796)
EACH FILE IS A RANGE OF DATASTORAGE RABNS
RABN = BLOCK = RELATIVE ADABAS BLOCK NUMBER

16. DS RABN HDR RECORD RECORD RECORD FREE SPACE REC LEN Fields…
Block length
X 0004
PAD
(DSST)
DSST: PER DS BLOCK: SPACE FROM LAST REC TO PAD

17. ? DS RABN: UPDATE RECORD HDR RECORD RECORD RECORD (DSST) PAD HDR
DSST: PER DS BLOCK: SPACE FROM LAST REC TO PAD

18. ? ? ? DS RABN: ADD RECORD HDR RECORD RECORD RECORD (DSST) PAD RECORD
DSST: PER DS BLOCK: SPACE FROM LAST REC TO PAD

19. DS RABN: REUSE DS ? SET BY DBA (AOS,ADADBS)
USED FOR NEW RECORDS AND POPPED RECORDS
OFF: GO TO 1ST UNUSED DS RABN
ON: SCAN DSST (UP TO X ENTRIES)
IF SPACE USE IT
IF NO SPACE, GO TO 1ST UNUSED DS RABN
NEXT DSST SCAN, NEXT ENTRY ?
1ST UNUSED
DSST: PER DS BLOCK: SPACE FROM LAST REC TO PAD

20. DS RABN: PROBLEM/TIPS READ EMPLOYEES PHYSICAL
COST-ADJUSTMENT = 2 * COST ADJUSTMENT
UPDATE SAME
LOOP
? ? ? ? ? ? ? ?
READ EMPLOYEES PHYSICAL
IF YEAR > 99 THEN end-program-logic
IF YEAR < 60 THEN YEAR = YEAR
ELSE YEAR = YEAR
UPDATE SAME
LOOP
? ? ? ? ? ? ? ?

21. DS RECORD 2B 4B IRL ISN FIELD 1 FIELD 2 FIELD 3 FIELD N
IRL = Inclusive Record Length
ISN = Internal Sequence Number
RECORD COMPRESSED AT THE FIELD LEVEL
FIELD:
L/VALUE COMPRESSED, NULL SUPPRESSED FIELDS (NU)
VALUE FIXED LENGTH FIELDS (FI)
EFC BYTE EMPTY FIELD COUNTER, X FIELDS EMPTY
MU/PE C MU/PE OCCURRENCE COUNTER

22. FIELD COMPRESSION/ TIPS
NU – NULL SUPPRESS
CAUTION ON DE, AND SOURCE FOR DE
– DEFAULT COMPRESSION
FI – FIXED COMPRESSION
IF NEVER EVER GOING TO CHANGE LENGTH
Eg. YY
TO CHANGE COMPRESSION OPTION:
1. ADACMP DECOMPRESS FILE
2. ADACMP COMPRESS FILE
3. ADALOD FILE

23. PUT FREQUENTLY USED FIELDS UP FRONT
DS RECORD AGAIN/TIPS 2B 4B
IRL
ISN
FIELD 1
FIELD 2
LAST EMPTY FIELD
1. DECOMPRESS UNTIL LAST FIELD REQUESTED.
PUT FREQUENTLY USED FIELDS UP FRONT
2. EMPTY FIELDS AT END OF RECORD ARE TREATED AS NU
CHANGING FIELD LENGTHS IS EASY (NU,dflt)
ADDING NEW FIELDS IS EASY
INSERTING NEW FIELDS IS NOT
FOR NEW PE’S
02,XA,1,A,NU
02,XN,1,P,NU

24. ASSOCIATOR OVERVIEW
FCBs | FDTs | DSST | FILE-X AC | FILE-X UI/MI | FILE-X NI |unused
. . .
. . .
RABN 1
RABN 2
RABN 3
RABN N
NOTES:
FIXED BLOCKSIZE - (3390= =4136)
FCB – FILE CONTROL BLOCK
FILE OPTIONS (eg. REUSE-DS, REUSE-ISN)
POINTER TO ALL FILE EXTENTS
FDT - FIELD DEFINITION TABLE.
FIELDS, FORMAT,LENGTHS,OPTIONS,TYPE,etc

25. ADDRESS CONVERTER (AC)
ISN ENTRY
DS RABN 1
DS RABN 2
DS RABN 5
DS RABN 8 1 2
ONE PER FILE, RANGE OF ASSO RABNS
ONE ENTRY PER POSSIBLE ISN
3 BYTES
ASSO BLOCK (2544) = 848 ENTRIES
EACH ENTRY CONTAINS DS RABN OR 0
COMPACT:
20M RECORD FILE IN 24K ASSO BLOCKS
E. FAST ACCESS: OFFSET ADDRESSING 3 4 5 6 7 8 9 10 11 12 13 14

26. AC: REUSE ISN/TIPS SET BY DBA (AOS,ADADBS) USED FOR NEW RECORDS
OFF: GO TO TOPISN + 1:
ON: SCAN FCB AND AC (UP TO 1 AC BLOCK)
IF ISN AVAILABLE, USE IT
IF NO ISN, GO TO TOPISN + 1
NEXT AC SCAN, NEXT AC BLOCK
TOPISN = 222,222
STORE EMPLOYEES
WRITE *ISN
ISN = ? ? ? ? ? ? ? ?

27. INVERTED LISTS THE CONCEPTUAL VIEW VALUE CNT ISN LIST UQ-DE MU-DE
SUB-DE PE-DE
SUPER-DE NU-DE
HYPER-DE
PHONETIC-DE
L ADAM 3
2 , 5 , 10
L ANSEL 1 3
L AXEL
200
1,4,6,20,. . .,1020
L BAIN 3
11, 12,70
L BEERE 39
7,9,13,…,2010
L BINN 3
8,15,3010
SORTED BY VALUE BY ISN
1 INVERTED LIST PER DESCRIPTOR

28. INVERTED LISTS A MORE ACCURATE VIEW FCB <= ( 1 BLOCK AT HIGHEST)
UI =>
MI =>
NI =>
MULTI-LEVEL INDEX ( 3 – 15 )
BUILT OF ASSO NI AND UI/MI RABN RANGES
EACH RABN CONTAINS:
a. 2 BYTE FIELD DEFINING USED BYTES
b. 2 BYTE LEVEL INDICATOR
c. X ELEMENTS
d. PAD

29. NI: NORMAL INDEX BLOCKS
BLK LEN 01
NI-ELEMENT
PAD
DE LEN
DE-VALUE
ISN COUNT
ISNa
ISNb
ISNc
ISNx
1Byte X Bytes Bytes Bytes Each
EACH NI BLOCK IS UNIQUE TO ONE DESCRIPTOR.
WITHIN EACH NI, SORTED BY VALUE BY ISN
TWO SUCCESSIVE NI BLOCKS MAY NOT BE IN SEQUENCE.
DE-VALUEs ARE COMPRESSED
IF COUNT (ISQ) > 127, THEN 2b COUNT USED

30. NI: NORMAL INDEX BLOCKS
?? HOW MUCH PER BLOCK ??
NI ELEMENT = 1 + VAL.LEN + (1or2) + (3or4)xN
MEAN COMPRESSED DE-LENGTH=10 / 3b ISN / UQ.DE (ISQ=1)
DEVICE BLKSIZE FORMULA MAX ELEMENTS PER BLOCK
(2544-4) / ( * 1 )
(4136-4) / ( * 1 )
EXAMPLE 1
MEAN COMPR DE-LEN=40 / 3b ISN / MAX ISNs PER BLOCK ??
DEVICE BLKSIZE FORMULA MAX ISNs PER BLOCK
((2544-4) - ( )) /
((4136-4) - ( )) /
USING 4b ISNs
USING 4b ISNs
EXAMPLE 2

31. MI: MAIN INDEX BLOCKS MI-ELEMENT PAD DE-VALUE ISN PTR TO NI RABN
BLK LEN 02
MI-ELEMENT
PAD
DE LEN
DE-VALUE
ISN
PTR TO NI RABN
1Byte X Bytes or 4 Bytes Bytes
EACH MI BLOCK IS UNIQUE TO ONE DESCRIPTOR.
WITHIN EACH MI, SORTED BY VALUE BY ISN
TWO SUCCESSIVE MI BLOCKS MAY NOT BE IN SEQUENCE.
DE-VALUEs ARE COMPRESSED
NI RABN PTR IS NI BLOCK WHOSE FIRST ELEMENT CONTAINS
THIS DE-VALUE/ISN

32. MI: MAIN INDEX BLOCKS MI NI NI NI ADAM BAIN ADAM 3 2,5,10 ANSEL 1 AXEL
BAIN MI NI
ADAM 3
2,5,10
ANSEL 1
AXEL
200
1,4,6,20,111,222,. . .,1020
PAD NI
BEERE 39
7,9,13,…,2010
BINN 3
8,15,3010
BAIN
11,12,70
PAD NI

33. MI: NORMAL INDEX BLOCKS
?? HOW MUCH PER BLOCK ??
MI ELEMENT = 1 + VAL.LEN + (3or4) + 3
MEAN COMPRESSED DE-LENGTH=10 / 3b ISN
DEVICE BLKSIZE FORMULA MAX NI BLOCKS
(2544-4) / ( )
(4136-4) / ( )
EXAMPLE

34. UI: UPPER INDEX BLOCKS UI-ELEMENT PAD DE NAME FLAG DE-LEN DE-VALUE ISN
BLK LEN
03- 15
UI-ELEMENT
PAD
DE NAME
FLAG
DE-LEN
DE-VALUE
ISN
PTR TO RABN
2b b b X Bytes or4 Bytes bytes
EACH U BLOCK CAN HAVE MULTIPLE DESCRIPTORS.
WITHIN EACH UI, SORTED BY DE BY VALUE BY ISN
TWO SUCCESSIVE UI BLOCKS MAY NOT BE IN SEQUENCE.
DE-VALUEs ARE COMPRESSED
RABN PTR IS TO LOWER BLOCK WHOSE FIRST ELEMENT CONTAINS THIS DE-VALUE/ISN
MULTIPLE LEVELS OF UI BLOCKS ARE POSSIBLE

35. DE VALUES SPANNING BLOCKSMI
ADAM
ADAM
12345
BAKER
128 NI
???? NI
ADAM
700
1,4,6,20,111,222, ,12000
PAD NI
ADAM 2
12345,50000
ANSEL 1 12
PAD
HISTOGRAM MAY READ MULTIPLE NI BLOCKS

36. DE VALUES SPANNING BLOCKS
MAX 832 ISNs/BLK (3390,3b ISN)
MI/NI ESTIMATION
IF MI:
ADAM
BAIN
ISN
MAX ISNQ FOR ADAM IS ??
IF MI:
ADAM
BAIN
ISN
MAX ISNQ FOR ANSEL IS ??
IF MI:
ADAM
BAIN
ISN
MAX ISNQ FOR ADAM IS ??
12345
IF MI:
ADAM
BURK
ISN
MAX ISNQ FOR BAIN IS ??
BAIN
12345

37. UPDATING INVERTED LISTSUI MD
MD MX NY NI MI UI MX
50/50 BLOCK SPLIT
UPDATE NEXT HIGHEST MD MI
MD NY NI MD MX MD MX MD MX

38. UPDATING INVERTED LISTS
INVOICES
EXAMPLE
DE=INVOICE NO.
SORTED ASCENDING
B. SORTED DESCENDING
BY INVOICE NO.
BY INVOICE NO.
READ WORK FILE
STORE CUSTOMER-FILE
READ WORK FILE
STORE CUSTOMER-FILE

39. FIC (FORWARD INDEX COMPRESSION
ADABAS 7 OPTION AT FILE LEVEL
DONE AT FILE LOAD OR REORDER
FIC ONLY WITHIN BLOCK
40-60% ASSO SAVINGS
FASTER READS OF INVERTED LISTS / ASSOCIATOR
NO FIC
FIC
6 BARKER
6 BARNES
6 BARNEY
4 BARR
7 BARRETT
4 BARRY
7 0 BARKER
4 3 NES
2 5 Y
2 3 R
4 4 ETT
2 4 Y
33 BYTES
21 BYTES

40. WORK OVERVIEW I II III ADARUN LP= USED FOR: BACKOUTS, AUTORESTART
CONTAINS: BEFORE/AFTER IMAGES OF RECORDS
DVTs (DESCRIPTOR VALUE TABLE)
ET,BT,BUFFER FLUSHES, etc.
TOO SMALL: RSP CD 9 – 15 , 8 II
ADARUN LWKP2= (or FORMULA)
USED FOR: COMPLEX FINDS
CONTAINS: INTERMEDIATE ISN AND BIT STRINGS
TOO SMALL: DELAYED FINDS, RSP.CD 74
III
WORKSIZE – LP – LWKP2
USED FOR: RESULTANT ISN LISTS
CONTAINS: RESULTANT ISN LISTS
TOO SMALL: RSP.CD 73
CYLS

41. INTERNALS OVERVIEW AGAIN
CMD.Q.
NC=20-200
LS=
LWP=1-5M
WORK POOL
USR-CID-INFO
LQ=20-400K
TBQ
LI=20-100K
TBI
LFP=.5-5M
FORMAT POOL
BUFFER POOL
LBP=30-100M
HOLD.Q
NH=4K-60K
SECURITY POOL
LCP=
UQ DE POOL
LDEUQP=
CQE SELECT
NT=5-30
THREADS
USER.Q
NU=
NAB=20-200
ATTACHED
BUFFERS
ASSO
BLKSIZE=2544
ASSO
BLKSIZE=2544
DATA
BLKSIZE=5064
DATA
BLKSIZE=5064
WORK
BLKSIZE=5724
FCB
FDT
PART 2 UI
PART 3
RECs MI NI
PLOGS AC
BLKSIZE=5724

42. GLOSSARY OF P,T,Q ADARUN NAME-DEFINITION RC NC 151
(CQ)COMMAND QUEUE- DB CALLS IN TRANSIT (WAIT,IN,RETURN
NAB
255
ATTACHED BUFFERS – USER BUFFERS PER CQ ELEMENT NT
THREADS – WHERE CMD IS ACTUALLY EXECUTED NU 72
(UQ) USER QUEUE – ONE ELEMENT PER USER NH
(HQ) HOLD QUEUE – FILE/ISNS ON HOLD
9-1 LQ 70
(TBQ) TABLE OF SEQUENTIAL COMMANDS – FOR L3/6,L2/5,L9
BY USER-CID, POINTER FOR USER SEQUENTAIL PROCESS LI 71
(TBI) TABLE OF RESULTANT ISN LISTS – FOR Sx,L1/4
BY USER-CID
LWP 88
WORK POOL – PER THREAD, WORK AREA FOR COMMANDS
LFP 42
(FP)FORMAT POOL – INTERNAL FORMAT BUFFERS,BY USER-CID
LBP
IO BUFFER POOL – MOST FREQUENT ASSO/DATA BLOCKS
LDEUQP
197
UNIQUE DESCRIPTOR POOL – IN FLIGHT UPDATED UQ DEs
LCP
SECURITY POOL
204

43. OTHER KEY ADARUNS SPACE/COUNT LIMITS ADARUN NAME-DEFINITION RC
NQCID 46
MAX CIDs PER USER
NISNHQ 47
MAX FNR/ISNs ON HOLD PER PER USER
NSISN
MAX ISNs PER ENTRY IN TBI (ISN LIST) TABLE LU
152
MAX SPACE FOR USER BUFFERS ON A COMMAND (64K) LS 1
MAX SPACE FOR WORK POOL (LWP) ON A COMMAND
SWITCHES
NONDES 68
ARE NON DESCRIPTOR SEARCHES ALLOWED?

44. OTHER KEY ADARUNS (cont)
TIMERS
ADARUN NAME-DEFINITION RC TT
TRANSACTION TIME LIMIT
9-2
TNAE
9-3
NON-ACTIVITY TIME LIMIT FOR ET USERS
TNAX
9-3
NON-ACTIVITY TIME LIMIT FOR EXU USERS
TNAA
9-3
NON-ACTIVITY TIME LIMIT FOR ACCESS ONLY USERS CT
254
COMMAND NOT RETURNED TO USER WITHIN TIME
TLSCMD 7
TIME LIMIT EXCEEDED FOR SEARCH/FIND COMMAND

45. FB,IFB,(DE)COMPRESSION
FORMAT BUFFER, INTERNAL FORMAT BUFFER I.
USER FB
IFB BB CC AA HD
CPU
BB,CC,AA.
TRANSLATE
( IFB Len = *F )
II.
IFB BB CC AA HD
USER RB
CPU
BB-VALUE,CC-VAL.,AA-VAL.
DE.COMPRESS
AA-BB-CC-DD----
DS COMPRESSED RECORD

46. FB,IFB,(DE)COMPRESSION
FORMAT TRANSLATION CAN BE CPU INTENSIVE
COMPRESSION/DECOMPRESSION CAN BE CPU INTENSIVE
1. FIELD SEQUENCE DOES NOT MATTER
IN FILE DESIGN:
FREQUENTLY USED FIELDS SHOULD BE UP FRONT
(DECOMPRESS/COMPRESS UP TO LAST FIELD IN IFB)
3. LIMIT VIEWS TO JUST DESIRED FIELDS

47. FB,IFB,(DE)COMPRESSION
3. LIMIT VIEWS TO JUST DESIRED FIELDS
EXAMPLE
20 FIELD VIEW
CASE 1 SPECIFIC
CASE 2 GENERIC
214 FIELD VIEW
INCREASE
BUFFER LENGTH BYTES BYTES
ELAPSED TIME MIN MIN %
USER CPU %
DATABASE CPU %

48. TRANSL. SCAN OVERWRITES CPU ONE IFB / VIEW / USER ONE IFB / VIEW
FB,IFB,GFID,LFP
CPU
. . . GLOBAL FORMAT ID, Le FORMAT POOL
TRANSL.
SCAN
OVERWRITES
USER FB
CPU
IFB
FORMAT POOL
IF CID /= 0/b (AND NO GFID)
IFB STORED IN LFP FOR RE-USE
ONE IFB / VIEW / USER
IF GFID, GLOBAL IFB STORED IN LFP FOR RE-USE
ONE IFB / VIEW

49. FB,IFB,GFID,LFP UQ GFIDs FORMAT POOL
UQE: USER IFBs CHAINED / MOST FREQUENT IFBs IN UQE
GFIDs CHAINED
USE CID TO SAVE ON FORMAT TRANSLATIONS
RELEASE CIDs (RC) WHEN DONE
USE GFIDs FOR COMMON VIEWS
DO NOT USE GFIDs FOR VIEWS RARELY USED

50. NATURAL GFID
RUN SOURCE => NO GFID
EX OBJECT => GFID
DEFAULT:
OPTION:
0010 OPTIONS GFID=OFF
USE ON LOW-SHARE PROGRAMS

51. COMMAND PROCESSING COMMON USAGE CMD X X X ? X X X X X X X ? X X X X X
IO STRUCTURES
MEMORY
CMD
FCB
UI-n MI NI AC DS W1 W2 W3
TBQ
TBI
LWP HQ
L2/5 X X X ?
L3/6 X X X X X X X ? L9 X X X X X
L1/4 X X X ? ? ? RC ? ?
UPD X ? ? ? X X X X Sx X X X X ? ? ? ? ? ? ?
HI/RI X
OP/CL ET X X BT X ? ? ? ? X X X
X – USED
? – MAY USE

52. COMMAND PROCESSING NOTES
UI-n - MAY BE MULTIPLE IO DEPENDING ON INDEX LEVELS
W1,W2,W3 - PARTS OF WORK DATASET
DS - (DE)COMPRESSION OF RECORD REQUIRES IFB,FDT,FP
LWP – SCRATCH AREA FOR ALL COMMANDS (DVT,IFB,etc),
X ONLY IF USER MAY BE OVER 32K
HQ ? – USED IF REQUEST TO PUT REC ON HOLD (L5,L6,L4,S4)
UPD – COMMANDS MAY BE A1,E1,N1/N2
Sx - COMMANDS MAY BE S1,S2,S4,S8,S9
ET/BT,OP/CL – ASSUME RESTART DATA NOT BEING USED

53. X CMD PROC. RC TBQ III W RELEASE CID RESOURCES CID TBI FP IFB
IF CID IS:
IF COPT1/2 IS:
X’ ’ ALL X’ ’ USER CIDs
NON-BLANK THIS
NON-ZERO CID ONLY
Blanks -- TBQ,TBI,FP
F FP
I TBI
S TBS
G TBQ,TBI,FP >=
X TBQ,TBI >= X
NOTE: FOR OTHER OPTIONS (eg. GFIDs) SEE MANUAL

54. CMD PROC. UPDs USES BEFORE/AFTER IMAGE (BI/AI) OF DS COMPRESSED RECORD
DVT – DESCRIPTOR VALUE TABLE
FIRST, BUILD DS AI.
IF DS BI = DS AI, THEN NO UPDATE, RSP.CD=0
SECOND, BUILD BI/AI FOR DVT
ENTRIES ONLY FOR CHANGED DESCRIPTOR VALUES
ELSE:
NOTE: ET/BT, NO WORK IF NO CHANGES

55. ???? CMD PROC. UPDs EXAMPLE BATCH JOB 2 MILLION RECORD FILE
1 MILLION UPDATES
ZERO UPDATES
ON PLOG
????

56. ANALYZE CODE APPLICATION ADABAS NATURAL DDLOG COMMAND LOGS
APAS/INSIGHT
REVIEW
TRIM
HOMEGROWN
+ ADABAS IO
+ ADABAS DURATION
+ SQL, DIRECT CALLS, etc

57. DDLOG TEST DBLOG ON TEST DBLOG SHOW TEST DBLOG OFF TEST DBLOG MENU B X
Code Function
B Begin Logging of ADABAS Commands
E End and Display Log Records
S Snapshot of Specific ADABAS Commands
. Exit
Code .. _
Command .. __ Skip _____ Program .... ____
DBID _____ FNR _____ Line from
Low Resp . _____ High Resp _ Line to
Optional Buffers for Code B
FB .. _ RB .. _ SB .. _ VB .. _ IB .. _ X B

58. DDLOG 0010 FIND DAFILE CODE= 'GN13' 0020 DISPLAY *ISN ABFLD CODE RLFLD
0030 END
M No Cmd DB FNR Rsp ISN ISQ CID CID(Hex) OP Pgm Line
_ 1 RC F ATEST
_ 2 S ??? POOLTEST 0010
_ 3 L ??? N POOLTEST 0010
_ 4 L ??? N POOLTEST 0010
_ 5 L ??? N POOLTEST 0010
_ 6 L ??? N POOLTEST 0010
_ 7 L ??? N POOLTEST 0010
_ 8 RC ??? SI POOLTEST 0010
_ 9 RC F POOLTEST 0030
_ 10 RC F POOLTEST 0030
M: C-CONTROL BLOCK
F-FORMAT BUFFER R-RECORD BUFFER
S-SEARCH BUFFER V-VALUE BUFFER
I-ISN BUFFER

59. DDLOG M: C-CONTROL BLOCK
_ SEQ NO PROGRAM .. POOLTEST LINE
Command Code .. S1 Command ID CB Start D5
Response Code ISN FNR first .. 00
ISN Low Limit ISN Quantity FNR last ... F1
FB Length B RB Length D SB Length
VB Length IB Length
Command Opts ..
Additions Command Time
Additions ?? D User Area
Additions
Additions
Global FID .... F8B848F2D73609F1

60. DDLOG M: S-SEARCH BUFFER M: F-FORMAT BUFFER
_ Seq No Search Buffer
0000 * C1C46BF4 6BC14B * AD,4,A *
0010 * * *
M: F-FORMAT BUFFER
_ Seq No Format Buffer
0000 * C1C26BF0 F0F36BD7 6BC1C46B F0F0F46B * AB,003,P,AD,004, *
0010 * C16BD9D3 6BF0F0F6 6BE44B * A,RL,006,U *

61. TEST FOR EACH NEW RELEASE
ANALYZE CODE
TEST FOR EACH NEW RELEASE
OF ADABAS AND NATURAL