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2 Invoked because a previously routed transaction or program-link
request has terminated successfully.
3 Invoked for notification of the destination of a statically-routed request.
This applies in the following cases:
ATI requests
A transaction defined as DYNAMIC(YES) has been initiated by a
terminal-related automatic transaction initiation (ATI) request—for
example, by the expiry of an interval control start request—but the
transaction is ineligible for dynamic routing.
For information about which transactions initiated by
terminal-related EXEC CICS START commands are eligible for
dynamic routing, see the
CICS Intercommunication Guide
.
Program-link requests
The program is defined as DYNAMIC(YES)—or is not defined—but
the caller specified the name of a remote region on the SYSID
option of the EXEC CICS LINK command.
In this case, specifying the target region explicitly takes precedence
over any SYSID returned by the dynamic routing program.
4 Invoked because the routed transaction abended.
The DYRTYPE field tells you the type of routing or notification request.
DYRLPROG
is the name of the initial program of the transaction to be routed; or the name of
the program specified on the link command to be routed.
Transaction routing
You can use this field to specify the name of an alternative program to be
run if the transaction is routed locally. For example, if all remote CICS
regions are unavailable, and the transaction cannot be routed, you may
want to run a program in the local terminal-owning region to send an
appropriate message to the user.
Note: DYRLPROG must not be set to blanks when you specify
DYRCABP=N. If you specify DYRCABP=N, ensure you also specify
a valid program name on DYRLPROG.
Program-link requests
When DYRFUNC is ‘0’ or ‘3’, DYRLPROG contains the name of the
program to be linked, obtained using the following sequence:
1. From the REMOTENAME option of the installed program definition
2. If REMOTENAME is not specified, or there is no program definition,
from the PROGRAM option of the EXEC CICS LINK command.
You can use this field to specify that an alternative program, other than that
named on the program-link request, is to be linked. You can specify a local
or remote program, depending on the region to which the request is to be
routed.
Note: Be aware that, if you change the value of DYRLPROG, and the
alternate program you choose is defined as DYNAMIC(YES), the
dynamic routing program will be reinvoked for route selection.
parameters passed to DFHDYP
568
CICS TS for OS/390: CICS Customization Guide
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