How to install a limited number of data definitions

If you want to install only a few new or changed definitions, install single resources. Use of the single-resource INSTALL eliminates the problems of a partial INSTALL caused by a failure.

Note that the single-resource INSTALL of some CONNECTIONs and SESSIONS is not possible.

However, if you want to change or add a larger number of definitions, you might prefer to install a new group. In that case, the following considerations apply:
  • When you install a group containing an updated definition of an existing resource, the installation fails if the resource is being used at the time. Make sure that none of the resources in a group is in use before trying to install the group.
  • Installation is a two-stage process: any existing definition for the resource must be “deleted” from the system tables before a definition can be installed. This can result in more than one message if the “deletion” fails and causes the installation to fail.
  • If you have several CICS® systems that share the same CSD file, you must be careful not to install a group of resources in the wrong system.