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this indicator to determine the type of startup it is to perform. See “How the
state of the CICS region is reconstructed” on page 34.
v CICS writes warm keypoint records to:
– The global catalog for terminal control and profiles
– The CICS system log for all other resources.
See “Warm keypoints.”
v CICS deletes all completed units of work (log tail deletion), leaving only shunted
units of work and the warm keypoint.
Note: Specifying no activity keypointing (AKPFREQ=0) only suppresses log tail
deletion while CICS is running, not at shutdown. CICS always performs log
cleanup at shutdown unless you specify RETPD=dddd on the MVS definition of
the system log. See “Activity keypointing” on page 112 for more information.
v CICS stops executing.
Warm keypoints
The CICS-provided warm keypoint program (DFHWKP) writes a warm keypoint
to the global catalog, for terminal control and profile resources only, during the
third quiesce stage of shutdown processing when all system activity is quiesced.
The remainder of the warm keypoint information, for all other resources, is written
to the CICS system log stream, under the control of the CICS recovery manager.
This system log warm keypoint is written by the activity keypoint program as a
special form of activity keypoint that contains information relating to shutdown.
The warm keypoints contain information needed to restore the CICS environment
during a subsequent warm or emergency restart. Thus CICS needs both the global
catalog and the system log to perform a restart. If you run CICS with a system log
that is defined by a journal model specifying TYPE(DUMMY), you cannot restart
CICS with START=AUTO following a normal shutdown, or with START=COLD.
Shunted units of work at shutdown
If there are shunted units of work of any kind at shutdown, CICS issues message
DFHRM0203.
This message displays the numbers of indoubt, backout-failed, and commit-failed
units of work held in the CICS region's system log at the time of the normal
shutdown. It is issued only if there is at least one such UOW. If there are no
shunted units of work, CICS issues message DFHRM0204.
DFHRM0203 is an important message that should be logged, and should be taken
note of when you next restart the CICS region. For example, if you receive
DFHRM0203 indicating that there is outstanding work waiting to be completed,
you should not perform a cold or initial start of the CICS region. You are
recommended to always restart CICS with START=AUTO, and especially after
message DFHRM0203, otherwise recovery data is lost.
See Chapter 4, “CICS cold start,” on page 45 for information about a cold start if
CICS has issued message DFHRM0203 at the previous shutdown.
Chapter 3. Shutdown and restart recovery 27