The RCFCOPY command specifies which parts of the source DB are to be copied to the destination. Most commonly a whole DB is reconfigured, using the command option:

The RCFCOPY ALL command copies all elements in the list part of the World element of the source DB into the World element of the destination DB. World itself is not copied. Parts of a database can be copied by using the RCFCOPY command followed by the name of the element at the top of the hierarchy to be copied. Only elements that can be owned by World, for example, Sites, can be specified. The list of elements specified by the RCFCOPY command becomes the copy list.

Note that you must use RCFCOPY ALL if you intend to use the RECONFIGURE SESSIONS command at the next step, as the SESSIONS option is not valid if you only carry out partial reconfiguration.