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Updates to IMS Buffer Pool Analyzer 1.4 User’s Guide (SC19-3980-01)

Release Notes


Abstract

Updates that apply to IMS Buffer Pool Analyzer 1.4 User’s Guide (SC19-3980-01).

Content

The most recent updates appear at the top of the list.


Update 1
Date of change: January 2022
Change description: Documentation changes related to the description of the GTF trace report

----------------------------

Topic: IMS buffer pool reports > Viewing the IMS Buffer Pool Analyzer reports > GTF trace report

The descriptions of OSAM and VSAM fields have been changed as follows:

Start of change

OSAM

Shows information about the OSAM trace records that are produced by IMS. OSAM GTF trace record subtypes are also listed as appropriate.

The OSAM subtype can be the OSAM request type, DIFFERNT IMS, or UNKNOWN.


OSAM request type

Indicates the number of records for each OSAM request type. The hexadecimal OSAM-related buffer handler function code that is set in the record is converted to a meaningful text string for this report. See the following table for possible values:

Hexadecimal value Subtype
E1 BLOCK LOCATE
E2 BYTE LOCATE
EB BYTLOC+MARK
(This subtype represents "Byte locate and mark the buffer as altered")
E4
CREATE BLOCK
 


DIFFERNT IMS

The number of OSAM records from other subsystems.


UNKNOWN

The number of records other than the above.

VSAM

Shows information about the VSAM trace records that are produced by VSAM. VSAM GTF trace record subtypes are also listed as appropriate.

The VSAM subtype can be the VSAM request type, NOT IMS DB, or UNKNOWN.

VSAM request type

Indicates the number of records for each VSAM request type. The hexadecimal RPLREQ (RPL request type) value that is set in the record is converted to a meaningful text string for this report. See the following table for possible values:

Hexadecimal value Subtype
00 GET
01 PUT
02 CHECK
03 POINT
04 ENDREQ
05 ERASE
06 VERIFY
07 IMPORT/JESFM
("JESFM" stands for "JES FORMAT")
08 DATA PREFMT
("PREFMT" stands for "PREFORMAT")
09 INDEX PREFMT
("PREFMT" stands for "PREFORMAT")
0A FORCE I/O
0B RPLREQ=0B
0C RPLREQ=0C
0D RPLREQ=0D
0E RPLREQ=0E
0F RPLREQ=0F
10 CNVTAD
11 MNTACQ
12 ACQRANGE
13 TERMRPL
14 VERIFY REFR
("REFR" stands for "REFRESH")
15 LKADD
16 LKREQ
17 LKCD
18 INQRC
19 RETLK
1A RECOV REQ
1B QUIESE REQ
1C EADD REQ


NOT IMS DB

The number of VSAM buffer activities (GTF F61 records) that were not VSAM traces for the IMS full-function database.


UNKNOWN

The number of records other than the above.


End of change

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Document Information

Modified date:
24 January 2022

UID

ibm16550190