Dynamic resource installation

It is recommended that you install most of your resources automatically, as each CICS® system initializes. However, at times it might be necessary to refresh those resources or install more resources to satisfy special circumstances.When a CICS system is running, you can use Business Application Services to install new or updated resources dynamically.

You can install a single resource in a single CICS system or a whole set of resources of various types in multiple CICS systems, complete with definition assignment and override values. When you install CICS resources dynamically, you can force those resources to replace any identical resources that were installed in the system previously.
Note:
  1. The maintenance point CMAS for the CICSplex must be active when you attempt to install resources dynamically. If the maintenance point is not available, the installation request fails.
  2. You cannot dynamically install session definitions (SESSDEF objects) directly. They can be installed indirectly through a SYSLINK resource or by defining a RASGNDEF (Resource Assignment Definition) for the SESSDEF, then installing the related CONNDEF with the RASGNDEF specified as the referenced resource assignment.

When you install an individual resource, you must identify the CICS systems where the resource is to be installed and provide information about its use as a local or remote resource. Optionally, you can provide override values for specific attributes of the resource. Any override values that you specify are used only for this one-time installation of the resource. The resource definition in the data repository remains unchanged.

You can use the install action command to install dynamically a resource into one or more active systems. For details of valid CICS systems, see the descriptions of the individual BAS objects. The options for installing a resource are the same options that you can specify when you create a resource assignment (RASGNDEF object), including specifying an override expression to be applied for this installation.

Note: The File key segment definitions and Session definitions views (FSEGDEF and SESSDEF objects) do not support the install action command.

CICSPlex® SM attempts to install all of the resources you identify, but sometimes conditions in the CICSplex prevent the installation process from completing successfully. When installation problems occur, CICSPlex SM provides detailed information about the errors.