1  –  name_or_id

    Specifies the name or number of the .rda or .snp file where you
    are storing the current database root Unique Identifier value.

2  –  SNAPSHOT

    Specifies that the file whose .rdb file fields you are changing
    is an .snp file.

3  –  Unique Identifier

    Specifies that you are storing the Unique Identifier in the
    storage area or the storage area snapshot header.