51、
51.Your database is configured in shared server mode. However, your senior DBA asks you to modify the value of the PRIVATE_SGA limit in the profile of the users. What could be the reason for this? A. To limit the User Global Area (UGA) memory allocated to a session from the SGA B. To limit the amount of memory to be used for the dispatcher queue of a session in SGA C. To limit the amount of memory to be used for the request pool in System Global Area (SGA) D. To control the amount of memory allocated in SGA for the local variables for each shared server process
Answer: A
52、
52.You used the IMMEDIATE option to shutdown your database instance. Consider the steps that will be performed later when you open the database: 1. SGA is allocated. 2. Control file is read. 3. Redo log files are read. 4. Instance recovery is started. 5. Background processes are started. 6. Data files are checked for consistency. 7. Server parameter file or the initialization parameter file is read. Which option has the correct order in which these steps occur? A. 7, 1, 5, 2, 3, 6, 4 B. 1, 5, 7, 2, 3, 6; step 4 is not required C. 7, 1, 5, 2, 3, 6 step 4 is not required D. 1, 2, 3, 5, 6, 4; step 7 is not required
Answer: C
53、
53.Automatic Shared Memory Management (ASMM) has been enabled for your database instance. The initialization parameters for the components that are managed by ASMM are not set. After observing the effects of ASMM, you executed the following command: SQL> ALTER SYSTEM SET DB_CACHE_SIZE = 100M; Which statement is true in this scenario? A. The minimum memory size for the database buffer cache is set to 100 MB. B. The maximum memory size that can be obtained by the database buffer cache during ASMM is set to 100 MB. C. The minimum memory size allocated for a server process in the database buffer cache in dedicated mode is set to 100 MB. D. The maximum memory size from the database buffer cache that can be released for dynamic distribution during ASMM is set to 100 MB.
Answer: A
54、
54.Examine the values for the following initialization parameters: FAST_START_MTTR_TARGET=0 LOG_CHECKPOINT_INTERVAL=0 Which two will be the implications of these values in your database? (Choose two.) A. The SGA advisor will be disabled B. The MTTR advisor will be disabled C. Automatic checkpoint tuning will be disabled D. Checkpoint information will not be written to the alert log file
Answer: BC
55、View the Exhibit to examine the output for the CROSSCHECK BACKUP command.
Which statement is true about the output of the command? A. The backup piece is expired as the new backup is available B. The backup piece is expired because the operating-system file was not found C. The backup piece is expired because the retention period for the backup has expired D. The backup piece is expired because the backup set to which it belongs is not complete
Answer: B