All of the exception class data and all of the system-defined performance class data that can be produced by CICS® monitoring is listed below. Each of the data fields is presented as a field description, followed by an explanation of the contents. The field description has the format shown in Figure 4, which is taken from the performance data group DFHTASK.
001 (TYPE-C, 'TRAN', 4 BYTES)
001 - Field identifier by which the field may be
individually excluded or included during MCT
preparation (CMODIDNT of the dictionary entry).
TYPE-C - Data type, which may be one of the following:
A - a 32-bit count, a 64-bit count, a string of 64-bit counts
C - a byte string
P - a packed decimal value
S - a clock comprising a 32-bit accumulation
of 16-microsecond units followed by an
8-bit flag followed by a 24-bit count
(modulo-16 777 216) of the number of
intervals included in the accumulation.
T - a time stamp derived directly from the
output of an STCK instruction.
(CMODTYPE of the dictionary entry)
'TRAN' - Informal name for the field, as used,
perhaps, in column headings when the monitoring output
is postprocessed (CMODHEAD of the dictionary entry).
4 BYTES - Length of the field (as represented by CMODLENG
in the dictionary entry).
This section covers:
In the descriptions that follow, the term clock is distinguished from the term time stamp.
A clock is a 32-bit value, expressed in units of 16 microseconds, accumulated during one or more measurement periods. The 32-bit value is followed by 8 reserved bits, which are in turn followed by a 24-bit value indicating the number of such periods.
Neither the 32-bit timer component of a clock nor its 24-bit period count are protected against wraparound. The timer capacity is about 18 hours, and the period count runs modulo 16 777 216.
The 8 reserved bits have the following significance:
A time stamp is an 8-byte copy of the output of an STCK instruction.