Configuring CICS for Subzero

Before you begin

To configure CICS for Subzero

1. Modify the CICS startup JCL by adding the Subzero load library to the following concatenations:

   • STEPLIB
   • DFHRPL

   BMC recommends that you add the Subzero library as the last data set in the concatenation.

2. Create or modify the CICS program list table (PLT) to include the Subzero PLT program (BRDPLT00):

   Note

   The PLT specifies which programs are executed in the post-initialization phase of CICS startup.

   • If creating a new PLT, create a member in your CICS table library. The member name should adhere to the naming conventions in your environment. Enter the following statements in the member. xx is the two-character suffix of the PLT.

     DFHPLT TYPE=INITIAL,SUFFIX=xx
     DFHPLT TYPE=ENTRY,PROGRAM=BRDPLT00
     DFHPLT TYPE=ENTRY,PROGRAM=DFHDELIM
     DFHPLT TYPE=FINAL
     END

   • If modifying a PLT, modify the PLT source and include an entry for program name BRDPLT00. Insert the entry before the PROGRAM=DFHDELIM statement:

     ...
     DFHPLT TYPE=ENTRY,PROGRAM=BRDPLT00       
     DFHPLT TYPE=ENTRY,PROGRAM=DFHDELIM
     ...
3. Assemble and link the new or updated PLT.

4. Update the PLTPI parameter in the CICS system initialization table (SIT) to identify this updated PLT to CICS:

   PLTPI=xx

   xx is the two-character suffix of the PLT.

5. Ensure that the DBC address space is running, and that the Subzero controlling agent is active.

   Note

   DBC and Subzero must start before any CICS regions that are participating in Subzero redirection. Otherwise, applications will use the native MQ, IMS or DB2 interfaces instead of redirections.

6. Restart CICS.CICS is now using the specified PLT, and is ready for Subzero participation. 

    

Where to go from here

Setting-Subzero-configuration-options-in-LGC