Filter
Top Products
system initialization parameter. The autoinstall user program is not invoked to
allow the definitions to be modified. The programs are defined with the following
attributes:
LANGUAGE(Assembler)
RELOAD(No)
STATUS(Enabled)
CEDF(No)
DATALOCATION(Below)
EXECKEY(CICS)
EXECUTIONSET(Fullapi)
If any of the default attributes are unsuitable, you must define the programs
statically (by defining entries in the CSD and installing the definitions).
Second phase PLT programs
During the final stages of CICS initialization, most CICS services are available to
PLT programs. These programs are specified in the second part of the PLTPI list
(after the DFHDELIM entry). The limitations on the services that are available to
second phase PLTPI programs are described below.
v Because interregion communication (IRC) and intersystem communication (ISC)
have pseudo-terminal entries associated with their function, you cannot run any
IRC or ISC functions during PLTPI processing. This includes performing inquiries
on those ISC/IRC functions.
v PLTPI programs may request services that could suspend the issuing task. (But
note that this affects the time at which control is given to CICS.) The SUSPEND
must not require the decision to resume to be taken by another task.
v Although PLTPI programs can issue interval control START commands, the
requested transactions are not attached before the initialization stages have
completed. Because this cannot happen until after the PLTPI programs
themselves have been completed, the latter must not be dependent on anything
that the requested transactions might do.
v PLTPI programs must not issue dump requests.
v PLTPI programs must not use the EXEC CICS PERFORM SHUTDOWN
command, or a severe error will occur in DFHDMDM. The EXEC CICS
PERFORM SHUTDOWN IMMEDIATE command is allowed.
v You must define second phase PLTPI programs to CICS. You can either define
the programs statically, or use program autoinstall (program autoinstall is
described in the
CICS Resource Definition Guide
).
Shutdown programs
Any program that is to execute during CICS shutdown must be defined in a
program list table (PLT), and the PLT must be named on the program list table
shutdown (PLTSD) system initialization parameter. You can override the PLTSD
value by providing a PLT name on the CEMT PERFORM SHUTDOWN command,
or on the EXEC CICS PERFORM SHUTDOWN command. If a PLTSD program
abends, syncpoint rollback occurs.
initialization programs
394
CICS TS for OS/390: CICS Customization Guide