If you wish to install only a few new or changed definitions, install single
resources as described in The CEDA INSTALL command. (Note that the single-resource
INSTALL of some CONNECTIONs and SESSIONS is not possible.) Use of the single-resource
INSTALL eliminates the problems of a partial INSTALL caused by a failure.
However, if you wish 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.