Structure And Content Of Compat41-Format Journal Records; Format Of Compat41 Journal Control Label Header - IBM SC34-6814-04 Customization Manual

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
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.
Log block Log block
Journal
control Journal Journal
label
record record
header 1 2
Figure 89. Format of general log formatted using the COMPAT41 option

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.
JCLRTBAL
JCRBB
JCSPFS
JCSPDSP
Log block
Journal
record
nn
JCSPEMER
JCSPMIDT
JCSPRRIF
Log block
Chapter 27. CICS logging and journaling
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