Steps to install MRO

To install support for multiregion operation, you must:

  1. Define CICS® as an MVS™ subsystem
  2. Ensure that the required CICS modules are included in your CICS system
  3. Place some modules in the MVS link pack area (LPA).

Installing support for cross-system MRO (XCF/MRO) requires some additional administration. This is described in Requirements for XCF/MRO.

Adding CICS as an MVS subsystem

Multiregion operation with CICS Transaction Server for z/OS® requires MVS/VS Subsystem Interface (SSI) support. You must therefore install CICS as an MVS subsystem. For information about how to do this, see the CICS Transaction Server for z/OS Installation Guide.

Modules required for MRO

You must include the intersystem communication management programs in your system by specifying ISC=YES on the system initialization parameters.

MRO modules in the MVS link pack area

For multiregion operation, there are some modules that, for integrity reasons, must be resident in the shared area or loaded into protected storage.

You must place the CICS Transaction Server for z/OS, Version 3 Release 1 versions of the following modules in the link pack area (LPA) of MVS.

MRO data sets and starter systems

To help you get started with MRO, a CICS job and a CICS startup procedure are supplied on the CICS distribution volume. For each MRO region, you must also create the CICS system data sets needed. See the CICS Transaction Server for z/OS Installation Guide for information about this.

Related concepts
Installation considerations for intersystem communication
Related tasks
Further steps
Defining links for multiregion operation
Related reference
Requirements for XCF/MRO
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