1. Loss of which of these files will cause an open database to crash? (Choose all
correct answers.)
A. A multiplexed controlfile
B. A multiplexed online log file
C. A multiplexed archive log file
D. An active undo tablespace datafile
E. An active temporary tablespace tempfile
F. A datafile from the SYSAUX tablespace
G. A datafile from the SYSTEM tablespace
H. A datafile containing critical user data
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