单项选择题

You are tuning RMAN to optimize performance.You want tape I/O to be asynchronous when you perform tape backups. Which action should you take?（）

A. Set the BACKUP_TAPE_IO_SLAVES parameter to FALSE
B.Set the BACKUP_TAPE_IO_SLAVES parameter to TRUE
C. Use compression when performing tape backups
D. Configure multiple SBT channels

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单项选择题

Which statement about the enabling of table compression in Oracle Database 11g is true?（）

A. Compression can be enabled at the table, tablespace, or partition level for direct loads only.
B. Compression can be enabled only at the table level for both direct loads and conventional DML.
C. Compression can be enabled at the table, tablespace, or partition level for conventional DML only.
D. Compression can be enabled at the table, tablespace, or partition level for both direct loads and conventional DML.

多项选择题

In which two aspects does hot patching differ from conventional patching?（）

A. It consumes more memory compared with conventional patching.
B. It can be installed and uninstalled via OPatch unlike conventional patching.
C. It takes more time to install or uninstall compared with conventional patching.
D. It does not require down time to apply or remove unlike conventional patching.
E. It is not persistent across instance startup and shutdown unlike conventional patching.

单项选择题

Which statement describes the effect of the execution of the above PL/SQL block?（）

A. The plan baselines are verified with the SQL profiles.
B. All fixed plan baselines are converted into nonfixed plan baselines.
C. All the nonaccepted SQL profiles are accepted into the plan baseline.
D. The nonaccepted plans in the SQL Management Base are verified with the existing plan baselines.