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Structure and content of COMPAT41-format journal records
SMF records
The following description does not apply to journal records written to an SMF data
set. These are described on page “Format of journal records written to SMF” on
page 737.
CICS allows you to format journal records so that they are presented in the format
used at CICS/ESA 4.1. Use the COMPAT41 option on the SUBSYS=(LOGR...) step
of your JCL.
Within the data presented, certain fields are not presented at CICS Transaction
Server for z/OS. They appear as X'00' in the formatted output. These fields are:
Table 39. Fields formatted as X'00'
JCLRJFID
JCLRVCD
JCLRVSN
JCLRLBW
JCLRTBAL
JCRBB
JCSPFS
JCSPDSP
JCSPEMER
JCSPMIDT
JCSPRRIF
Each general log comprises a stream of contiguous blocks of journaled data. Each
block comprises a journal control label header followed by a variable number of
CICS journal records. Each CICS journal record comprises a system header,
system prefix, user prefix, and journaled data.
A graphical overview of the format of a general log, showing the format of a
complete block, is shown in Figure 89.
Format of COMPAT41 journal control label header
Each log block starts with a journal control label header. There is one journal
control label header per log block. It is 42 bytes long, and comprises a length field,
label header, and label prefix. The format of the journal control label header is
shown in Figure 90 on page 730.
Logblock Logblock Logblock
Journal
control
label
header
Journal
record
1
Journal
record
2
Journal
record
nn
Logblock
Figure 89. Format of general log formatted using the COMPAT41 option
Chapter 27. CICS logging and journaling 729