EXP-00021: can only perform incremental export in Full Database mode
What triggered the Error:
USER or TABLE mode was specified when doing an incremental export.What should we do to fix it:
Specify FULL database mode (FULL=Y) and retry.
If this was not sufficient go over to:
Oracle Official Support Knowledge Center
Or maybe those geeks at: StackOverflow Board
Or maybe those geeks at: StackOverflow Board