To define a CICS® region to VTAM®, specify the minor node name to be used
for the CICS region on the VTAM APPL definition statement.
For example, you could use the following definition for the CICS region to be
identified as CICSHTH1:
**********************************************************************
* Specific APPL definition for CICS region CICSHTH1
**********************************************************************
CICSHTH1 APPL AUTH=(ACQ,VPACE,PASS),VPACING=0,EAS=5000,PARSESS=YES X
SONSCIP=YES,LUAPFX=XX
********************************************************************
Notes:
- Code CICSHTH1 on the CICS system initialization parameter APPLID, to define
the VTAM application identifier to CICS.
- See Naming conventions for information about the naming convention
that is used for the CICSHTH1 applid.
When you define your CICS system to ACF/VTAM, include the following
parameters on the VTAM APPL statement:
- ACBNAME=acbname
- Specifies the minor node name (acbname) that is assigned to
this application. This name must be unique within the domain. If you do not
specify this parameter, the name of the VTAM APPL statement is taken.
- AUTH=(ACQ,VPACE[,PASS])
- ACQ allows CICS to acquire LUTYPE 6 sessions. VPACE allows pacing
of the intersystem flows. You need PASS if you intend using the EXEC CICS ISSUE PASS
command to pass existing terminal sessions to other VTAM applications.
- EAS=number
- Specifies the number of network-addressable units. The number must include
the total number of parallel sessions for this CICS system.
- HAVAIL=YES
- Indicates that the application supports XRF sessions and can initiate
XRF sessions.
- LOGMODE=name
- (For CICS-to-CICS APPC systems.) Defines the name of the MODE table
that contains the LU6.2 MODEENT for the secondary sessions.
- LUAPFXstring
- specifies the prefix characters of the LU alias to be assigned when
a dynamically generated cross-network CDRSC (with NQNMODE=NQNAME) is created
for a session with CICS. VTAM concatenates the characters specified with the next
sequential number available to form a VTAM-generated LUALIAS name for the
cross-network dynamic CDRSC.
- string
- indicates the two characters to be used as the prefix for all dynamically
generated LUALIAS names for dynamic cross-network CDRSCs in session with the CICS region defined by the APPL statement. Remember to take into account
the VTAM naming conventions when choosing this prefix. For CICS considerations
when specifying the LU alias string, see Choosing an LUAPFX value.
Note:
VTAM deletes a dynamically-generated LU alias after a terminal
session is closed, or the last session of an APPC parallel sessions connection
is closed, and the CDRSCTI-specified timeout interval has expired. The permitted
range of timeout values is 1 second to 7 days, but generally the default of
8 minutes is acceptable in most situations. The CDRSCTI timer doesn't start
until there are no more sessions involving the resource represented by a CDRSC.
For more information about CICS support for the VTAM dynamic LU
alias facility, see VTAM LU alias facility.
- PARSESS=YES
- Specifies LUTYPE 6 parallel session support.
- PERSIST=MULTI
- Indicates that the application supports Multi Node Persistent Sessions
(MNPS). For further information, see the z/OS Communications Server: SNA Network Implementation.
- SONSCIP=YES
- Specifies session outage notification (SON) support. SON enables CICS, in certain cases, to recover a session after session failure without
operator intervention.
- VPACING=number
- Specifies the maximum number of normal-flow requests that another logical
unit can send on an intersystem session before waiting to receive a pacing
response. Start with a value of 5.
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