ocp認證052考題解析：1Z0-V8.02-第77題
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77. You executed the following command to perform a backup of the USERS tablespace:
SQL> ALTER TABLESPACE users BEGIN BACKUP;
ALTER TABLESPACE users BEGIN BACKUP
*
ERROR at line 1:
ORA-01123: cannot start online backup; media recovery not enabled
What could be the reason for this error?
A.The MTTR Advisor is disabled.
B.The database is in NOARCHIVELOG mode.
C.The tablespace is already in backup mode.
D.The Flash Recovery Area is not configured.
Answer: B
對數據庫進行熱備，必須把數據庫設置為archivelog 模式。
如果未處于archivelog 模式，需shutdown數據庫，啟動到mount狀態進行修改。因此B是正確答案。
