Installing Online Interfaces › How to Configure the Online Interfaces Without CA CSM › Install Cross-Memory Services › Step 2: Define Transaction and Programs to CICS › CICS XMS Subtask Startup

CICS XMS Subtask Startup

Use one of these methods to start the XMS subtask automatically:

1. When the CICS region is started, use the DFHPLTPI definition to automatically start the XMS subtask.
2. Define a transaction for the EC1CINIT program to allow for manual startup.
3. Write a CICS program to transfer control (XCTL) to EC1CINIT when you want to start the XMS subtask.

Until the XMS subtask is started, expect the transactions referencing EC1XMCIC to terminate with an error message that indicates that the XMS subtask is not active.

Note:

• When the CICS region is terminated, the DFHPLTSD definition is to be used to terminate the XMS subtask.

  You can manually terminate the XMS subtask through a user application program that LINKs the EC1CIEND or you can use the optional transaction defined for EC1CIEND for manual termination.

• If you want to terminate the XMS subtask manually, we recommend that you use the DFHPLTSD entry to terminate the XMS subtask. This definition is needed to clean up linkages to the XMS address spaces.
• To prevent users from shutting down the XMS subtask, secure the optional transaction for program EC1CIEND.