Remember kids (Oracle, redo logging)...

Borrowed from AskTom (and slightly cleaned up):

Table Mode Insert Mode ArchiveLog Mode  Result
---------- ----------- ---------------  ------
LOGGING    APPEND      ARCHIVELOG       redo generated
NOLOGGING  APPEND      ARCHIVELOG       no redo
LOGGING    no append   ARCHIVELOG       redo generated
NOLOGGING  no append   ARCHIVELOG       redo generated
LOGGING    APPEND      NOARCHIVELOG     no redo
NOLOGGING  APPEND      NOARCHIVELOG     no redo
LOGGING    no append   NOARCHIVELOG     redo generated
NOLOGGING  no append   NOARCHIVELOG     redo generated