Support for Nonalphanumeric Characters
By default, ASCII letters, digits, and the underscore (ASCII 95) character are supported in SQL identifiers and in storage object identifiers for all locales. To include additional characters from the codeset implied by the DB_LOCALE setting in the names of database objects, you must use delimited identifiers.
You cannot , however, use delimited identifiers, however, to specify characters that are not letters, digits, or the underscore ( _ ) character when you declare or reference the names of storage objects, such as dbspaces, partitions, blobspaces, or sbspaces.