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QUESTION NO: 61
The DBA can structure an Oracle database to maintain copies of online redo log files to avoid losing database information.Which three are true regarding the structure of online redo log files? (Choose three.)
A. Each online redo log file in a group is called a member.
B. Each member in a group has a unique log sequence number.
C. A set of identical copies of online redo log files is called an online redo log group.
D. The Oracle server needs a minimum of three online redo log file groups for the normal operation of a database.
E. The current log sequence number of a redo log file is stored in the control file and in the header of all data files.
F. The LGWR background process concurrently writes the same information to all online and archived redo log files in a group.
Answer: B, C, E
我选择 A,C,E |
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