多项选择题
Which two statements are true about the duplexing of the backups taken by RMAN？（）
A. It’s only supported for the backups performed on the tape
B. It is not supported for backup operations that produce image copies
C. Duplex backups need a parallelism for the device to be equal to number of copies
D. Duplex backups can be performed to either disk or tape， but cannot be performed on tape and disk simultaneously
相关考题
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单项选择题
WhichpackageprovidesAPI’sfortheSQLTuningAdvisor？（）
A. DBMS_MONITOR
B. DBMS_STATS
C. DBMS_SQLTUNE
D. DBMS_ADVISOR -
单项选择题
You create two resource plans，one for data warehouse loading jobs at night and the other for application jobs at day time. You want the resource plans to activate automatically so that the resource allocation is optimum as desired by the activity. How would you achieve this？（）
A. Implement job classes
B. Implement Scheduler windows
C. Implement the mapping rule for the consumer groups
D. Set the SWITCH_TIME resource plan directive for both the resource plans -
单项选择题
TheDB_BLOCK_CHECKINGinitializationparameterissettoOFF.Whichblockcheckingwouldbeperformed？（）
A. The Oracle database will perform block checking for the index blocks only
B. The Oracle database will not perform block checking for any of the data blocks
C. The Oracle database will perform block checking for the default permanent tablespace only
D. The Oracle database will perform block checking for the data blocks in all user tablespaces
E. The Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only
