DFH$FCBV
A sample exit program designed to be invoked at the XFCBOVER exit; it
allows you to decide whether to allow an update to be backed out, following
a batch update run that has overridden retained locks. See “DFH$FCBV
sample global user exit program” on page 121.
DFH$FCLD
A sample exit program designed to be invoked at the XFCLDEL exit, which
allows you to perform logical deletion of records from a VSAM ESDS data
set or a BDAM data set, during backout. See “DFH$FCLD sample global
user exit program” on page 123.
You can define these programs by including the supplied resource group,
DFH$FCB, in your startup grouplist, or by using CEDA to install DFH$FCB.
The function-shipping and DPL queue control sample exit
program
You can use the XISCONA sample global user exit program to control the queueing
of function-shipping and DPL requests:
DFHXIS
A sample global user exit program, designed to be invoked at the XISCONA
exit.
The interval control EXEC interface sample exit program
DFH$ICCN
A sample global user exit program, designed to be invoked at the XICEREQ
exit. DFH$ICCN is for use in a distributed routing environment, where you
want to cancel a previously-issued interval control request but have no way
of knowing to which region to direct the CANCEL. For examples of
situations which DFH$ICCN is designed to cope with, see the
CICS
Intercommunication Guide
.
The ISC session queue management sample exit program
This sample program implements the same basic function provided by the
QUEUELIMIT and MAXQTIME parameters on a connection resource definition.
These parameters are passed to the XZIQUE global user program, which can
change the way in which these parameters are used:
DFH$XZIQ
A sample global user exit program, designed to be invoked at the XZIQUE
exit, which is described on page “XZIQUE exit for managing intersystem
queues” on page 237.
See “Sample exit program design” on page 244 for more details.
The message domain sample exit programs
These sample programs show you how to write a program to be invoked at a
specific exit, to do a specific task. For example, the DFH$SXP4 sample program
shows you how to use the XMEOUT exit to reroute a console message to a
transient data queue.
DFH$SXPn
A set of sample global user exit programs designed to be invoked at the
XMEOUT exit (where ‘n’ is 1 through 6).
global user exit programs
18
CICS TS for OS/390: CICS Customization Guide
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