In z/OS, fileid is a true DDNAME; and in the UNIX OS, it is a file pathname. If DDNAME is specified, Teradata TPump writes data records to the specified destination. A DDNAME must obey the same rules for its construction as Teradata SQL column names except that the “at” sign (@) is allowed as an alphabetic character and the underscore ( _ ) is not allowed. The DDNAME must also obey the applicable rules of the external system and may reference a sequential or VSAM data set. If DDNAME represents a data source on magnetic tape, the tape may be either labeled or non-labeled (if the operating system supports it).
On UNIX systems, an asterisk (*) can be used as the fileid1 or fileid2 specifications to route messages to the system console/standard output (stdout) device. The system console is the:
- Display screen in interactive mode
or
- Standard output device in batch mode