The following list shows different ways you can specify a name for the discard file from within the control file:
To specify a discard file with file name circular and default file extension or file type of .dsc:
DISCARDFILE circular
To specify a discard file named notappl with the file extension or file type of .may:
DISCARDFILE notappl.may
To specify a full path to the discard file forget.me:
DISCARDFILE '/discard_dir/forget.me'