单项选择题

Note the following functionalities of various background processes: 
1:Record the checkpoint information in data file headers. CKPT 
2:Perform recovery at instance startup. SMON 
3:Cleanup unused temporary segments. SMON 
4:Free the resources used by a user process when it fails. 
5:Dynamically register database services with listeners. 
6:Monitor sessions for idle session timeout. 
Which option has the correct functionalities listed for a background process()

A.Archiver Process (ARCn):1, 2,5
B.System Monitor Process (SMON):1,4,5
C.Process Monitor Process (PMON):4,5,6
D.Database Writer Process (DBWn):1,3,4


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A.Shared SQL Area will be allocated in the shared pool.
B.Shared SQL Area will be allocated when a session starts.
C.Shared SQL Area will be allocated in the large pool always.
D.Private SQL Area will be allocated in the Program Global Area (PGA) always.
E.Shared SQL Area and Private SQL Area will be allocated in the PGA or large pool.
F.The number of Private SQL Area allocations is dependent on the OPEN_CURSORS parameter.

4.单项选择题Which is the correct description of a pinned buffer in the database buffer cache()

A.The buffer is currently being accessed.
B.The buffer is empty and has not been used.
C.The contents of the buffer have changed and must be flushed to the disk by the DBWn process. 
D.The buffer is a candidate for immediate aging out and its contents are synchronized with the block contents on the disk.

6.多项选择题

Examine the following statement that is used to modify the constraint on the SALES table: SQL> ALTER TABLE SALES MODIFY CONSTRAINT pk DISABLE VALIDATE;
Which three statements are true regarding the above command()

A.The constraint remains valid.
B.The index on the constraint is dropped.
C.It allows the loading of data into the table using SQL*Loader.
D.New data conforms to the constraint, but existing data is not checked
E.It allows the data manipulation on the table using INSERT/UPDATE/DELETE SQL statements.

7.单项选择题

View the Exhibit and examine the privileges granted to the SL_REP user.

The EMP table is owned by the SCOTT user. The SL_REP user executes the following command: SQL> GRANT SELECT ON scott.emp TO hr; 
Which statement describes the outcome of the command() 

A.The command executes successfully.
B.The command produces an error because the EMP table is owned by SCOTT.
C.The command produces an error because SL_REP has the GRANT ANY OBJECT PRIVILEGE withoutADMIN_OPTION.
D.The command produces an error because SL_REP does not have the SELECT privilege withGRANT_OPTION on the EMP table.

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You set the following parameters in the parameter file and restarted the database:MEMORY_MAX_TARGET=0MEMORY_TARGET=500MPGA_AGGREGATE_TARGET=90MSGA_TARGET=270MWhich two statements are true about these parameters after the database instance is restarted()

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Your database is functional with a peak load for the last one hour. You want to preserve the performancestatistics collected during this period to be used for comparison when you analyze the performance of thedatabase in the future. What action would you take to achieve this task()

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Which  statements are true about checkpointing()

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View the Exhibit and examine the privileges granted to the SL_REP user. The EMP table is owned by theSCOTT user. The SL_REP user executes the following command:SQL> GRANT SELECT ON scott.emp TO hr;Which statement describes the outcome of the command()

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