Define Multiple Subsystems
Learn how to define multiple Datacom VSAM Transparency subsystems.
Creating an additional subsystem may be useful when making the transition from the current production version of
Datacom VSAM Transparency
to an upgraded version or a test version with maintenance applied to it.Types of Subsystem Installations
The following section discusses two ways to install an additional subsystem:
- Use CAIRIM
- Use IEFSSNxx
Use CAIRIM
An additional subsystem can be installed by using the CAIRIM installation step described in the
Installation Guide.
See the install job BGRIM01 instructions in the JCL member for the CAIRIM step.Run CAIRIM with the control statements:
//RIMEXEC.PARMLIB DD * PRODUCT(CA DATACOM VSAM/T) VERSION(BG14) INIT(DVCR4PR) - PARM(DVSSN=VT14,SFX=14) - LOADLIB(CAI.CHLQ.CUSLIB) /*
The dashes are continuation indicators and must be in column 71.
This example implements a subsystem "VT14" using modules with a suffix of "14". Also, the library specified in the LOADLIB parameter must be APF authorized.
The name of the additional subsystem must be unique. The module suffix must not have been used for a
Datacom
VSAMTransparency subsystem previously since the last IPL of the system.
Use IEFSSNxx
Follow the same steps in Add the Datacom VSAM Transparency Subsystem to IPL However, use a different subsystem name and a different module suffix.
The subsystem name and suffix must be unique within the system.
Verify the New Subsystem
The BGIVP01 member in INSTJCL should be ready to test the new subsystem after making the following changes.
Modify the DD statements for CUSTMR and CUSTMR1 as follows and submit the job:
//CUSTMR DD SUBSYS=(CATS,'VUTNM=DVVUTPR') //CUSTMR1 DD SUBSYS=(CATS,'VUTNM=DVVUTPR')
The results should be the same as with the initial subsystem. For more information, see Sample Programs and Online Displays.