/EXCEPTION_FILE=file-spec
       /NOEXCEPTION_FILE

    CRDB may encounter records that cannot be loaded into the
    database. This usually means that in /FAST_LOAD mode these
    records had keys (left hand sides) that were duplicates of other
    keys previously encountered in the input file. When /FAST_LOAD
    is used (the default), these exception records can optionally
    be written to a separate output file for later examination. The
    /EXCEPTIONS_FILE qualifier controls the writing of this file.
    Note that the lines in this file are not plain text; they are
    formatted as database entries.