单项选择题

Which statement is true about the Manageability Monitor （MMON） background process（）

A.It transfers statistics from memory to disk at regular intervals.
B.It coordinates the rebalance activity for disk groups when ASM is used.
C.It communicates with the Automatic Storage Management （ASM） instance on behalf of the database Instance.
D.It performs dynamic memory management when Automatic Shared Memory Management is enabled for the Database instance

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多项选择题

Which two statements are true regarding the SGA_TARGET initialization parameter（）

A.It can be increased up to the value of the SGA_MAX_SIZE parameter.
B.Increasing the value of the SGA_TARGET parameter distributes the increased memory among all the Autotuned components.
C.Reducing the value of the SGA_TARGET parameter deallocates memory from both autotuned and Manually sized components.
D.Increasing the value of SGA_TARGET up to the value of SGA_MAX_SIZE disables the automatic shared Memory management feature.

多项选择题

Which two activities are NOT supported by the Data Recovery Advisor DRA（）

A.Recover from failures in the RAC environment.
B.Diagnose and repair a data file corruption online.
C.Diagnose and repair a data file corruption offline.
D.Diagnose and repair failures on a standby database

多项选择题

Which operations require undo data（）

A.Committing a transaction
B.Flashing back a transaction
C.Recovering a failed transaction
D.Running a read-consistent query
E.Changing a tablespace status from READ ONLY to READ WRITE