What happens when you use the INSTALL command
Most resource definitions can be installed in groups or individually, and are committed at the individual resource level. However, some SNA LU control resource definitions must be installed in groups and are committed in installable sets.
Some SNA LU control resource definitions within a CSD group are
committed at the installable set level. An installable set comprises
those resources, such as a CONNECTION and its associated SESSIONS,
which are dependent in some way. The backout of an installable set
does not cause the whole group to be backed out. The following types
of resource definition are installed in installable sets:
- CONNECTION and associated SESSIONS definitions
- Pipeline terminals—all the terminal definitions sharing the same POOL name
All other resource types are committed individually, and not in installable sets. For these resources, the effect of a partially successful group INSTALL is to leave the resources that were added in a committed state.
For the installation of installable sets and for individual definition,
an INSTALL may not be successful for one of two reasons:
- A resource definition could not be installed because it is currently in use.
- A system failure occurred during installation.
You can use the CEDA INSTALL command to reinstall the same group used at a cold or initial start, and the new definitions are installed successfully, even if some original definitions are in use and fail to install.