单项选择题
A.It ignores duplicates.
B.It prevents character set translation on import.
C.It allows rows to be inserted into a table that already exists.
D.It ignores storage parameters in the DML executed during import.
多项选择题 Archive file format LOG_ARCHIVE_FORMAT is defined as arch_%s.arc. A week ago， you just archived arch_4.arch to tape， then removed all archived files to save disk space. Yesterday you saw arch_10.arc and arch_11.arc on the disk. Today， you see arch_3.arc in the archive directory. Which two could you happened？（）
多项选择题 InRMAN，whentheRESYNCCATALOGcommandisissued，inwhichtwosituationsdoesthecommandfileactuallyperformsynchronization？（）
多项选择题 Which three statements about direct path exports are true？（）