11. Under which of the following circumstances is an incomplete recovery
necessary? (Choose two answers.)
A. You lose all copies of your current online log file group.
B. You lose a critical tablespace: SYSTEM, and/or the currently active UNDO
tablespace.
C. A user makes a bad transaction, and the instance crashes before he can
issue the ROLLBACK statement.
D. A datafile is created, used, and destroyed before it gets backed up.
E. You back up a tablespace, drop it, and then want to get to the objects that
were in it.
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