Autoinstalling APPC connections

You are most likely to benefit from autoinstall for connections if you have large numbers of workstations all with the same characteristics. Follow this instruction to implement APPC connection autoinstall.

Procedure

  1. Decide whether to use autoinstall for connections.

    The main benefits of using autoinstall for connections are that cold, warm, and emergency restarts are faster, you have fewer CSD file definitions to manage, and less storage is taken up by unused definitions.

    However, some possible restrictions are discussed in Recovery and restart for connection autoinstall.

  2. Decide which sessions to autoinstall.

    You can use autoinstall for CICS®-to-CICS connections, but it is intended primarily for workstations.

  3. Create your model connection definitions.

    A model definition provides CICS with one definition that can be used for all connections with the same properties. See Model definitions for connection autoinstall.

  4. Design and write an autoinstall control program.

    The autoinstall control program provides CICS with the extra information it needs to complete an autoinstall request, such as the autoinstall model name. See The autoinstall control program for connections.

    For programming information about the autoinstall control program, see Writing a program to control autoinstall of LUs.

  5. Enable autoinstall for connections.

    Autoinstall for connections is enabled when you enable autoinstall for terminals; see Implementing z/OS Communications Server autoinstall for information about the system initialization parameters and the CEMT and EXEC CICS INQUIRE and SET options used.

    If terminal autoinstall has been enabled but you want to prevent autoinstall for connections, set the model connection out of service by using the SET CONNECTION(connection-name) OUTSERVICE command. For details, see CEMT SET CONNECTION and SET CONNECTION. When the model connection is out of service, the autoinstall control program cannot access it and copy it, so the autoinstall function for connections is effectively disabled.