Filter
Top Products
Autoinstall for programs
If program autoinstall is enabled (PGAIPGM=ACTIVE), program, mapset, and
partitionset resource definitions are installed from the CSD only if they were
cataloged; otherwise they are installed at first reference by the autoinstall process.
All definitions installed from the CSD are updated with information from the
warm keypoint in the system log.
CICS catalogs program, mapset, and partitionset resource definitions as follows:
v If they are installed from predefined definitions in the CSD, either during a cold
start or by an explicit INSTALL command, CICS catalogs the definitions.
v If the PGAICTLG system initialization parameter specifies ALL, CICS catalogs
all the autoinstalled program-type definitions, and these are reinstalled during
the warm restart.
v If the PGAICTLG system initialization parameter specifies MODIFY, CICS
catalogs only those autoinstalled program-type definitions that are modified by a
SET PROGRAM command, and these are reinstalled during the warm restart.
Start requests
In general, start requests are recovered together with any associated start data.
Recovery can, however, be suppressed by specifying explicit cold start system
initialization parameters for temporary storage, interval control, or basic mapping
support (on the TS, ICP, and BMS system initialization parameters respectively).
Any data associated with suppressed starts is discarded.
The rules governing the operation of the explicit cold requests on system
initialization parameters are:
v ICP=COLD suppresses all starts that do not have both data and a terminal
associated with them. It also suppresses any starts that had not expired at
shutdown. This includes BMS starts.
v TS=COLD (or TS main only) suppresses all starts that had data associated with
them.
v BMS=COLD suppresses all starts relating to BMS paging.
Start requests that have not been suppressed for any of the above reasons either
continue to wait if their start time or interval has not yet expired, or they are
processed immediately. For start requests with terminals, consider the effects of the
CICS restart on the set of installed terminal definitions. For example, if the
terminal specified on a start request is no longer installed after the CICS restart,
CICS invokes an XALTENF global user exit program (if enabled), but not the
XICTENF exit.
Monitoring and statistics
The CICS monitoring and statistics domains retrieve their status from their control
records stored in the global catalog at the previous shutdown.
This is modified by any runtime system initialization parameters.
Chapter 5. CICS warm restart 57