The SPFILE for the PROD database specifies the following initialization parameter values：  
SGA_TARGET = 2G  
DB_8K_CACHE_SIZE = 128M  
You create a tablespace named HR with the non-standard block size of 8K. Four database users are running queries on a table in the HR tablespace. These users complain that the queries are taking longer than usual to complete. While investigating the reasons for this delay， you discover that the database encounters extensive cache misses on the database buffer cache with the block size of 8K. You issue the following statement to increase the value of the DB_8K_CACHE_SIZE initialization parameter to 256M：  
SQL>ALTER SYSTEM SET DB_8K_CACHE_SIZE=256M SCOPE = BOTH；  
What is the result of this statement？（）  

单项选择题You recently created a database and configured the SPFILE with the following parameter settings to ensure that Oracle automatically adjusts the memory for the Program Global Area （PGA）：   SORT_AREA_SIZE = 150M   HASH_AREA_SIZE = 150M   BITMAP_MERGE_AREA_SIZE = 150M   CREATE_BITMAP_AREA_SIZE = 150M   WORKAREA_SIZE_POLICY = AUTO   You have not included the PGA_AGGREGATE_TARGET initialization parameter in the SPFILE and the System Global Area （SGA） is currently sized at 4G.   What is the total PGA memory allocated across all database server processes？（）

A. 10M
B. 400M
C. 600M
D. 800M

单项选择题You recently added a third-party application to your database and do not have access to the SQL code of this application. Database users are complaining of performance-related issues， such as increased time required to complete a query. While investigating， you discover from the STATSPACK utility that some of the memory structures have low hit ratios. You plan to resize some of the memory structures by using the Memory Advisor. For which memory structure will you fail to obtain optimal settings by using the Memory Advisor？（）

A. java pool
B. shared pool
C. buffer cache
D. program global area

多项选择题YouareenablingtheAutomaticSharedMemoryManagementfeatureintheOracleDatabase10gtoensurethattheimportantmemorystructuresoftheSystemGlobalArea（SGA）areautomaticallyadjusteddependingonthedatabaseworkload.YouareusingEnterpriseManager10gtoenablethisfeature.YouarecurrentlyontheAdministrationtabpage. WhichtwolinksshouldyouclicktogototheMemoryAdvisorpage？（）

A. Advisor Central
B. Global Attributes
C. Resource Monitors
D. Memory Parameters
E. Database Usage Statistics
F. All Initialization Parameters
G. Automatic Workload Repository

单项选择题You have included the following parameter setting in your server parameter file：       PGA_AGGREGATE_TARGET = 800M        SORT_AREA_SIZE = 100M        HASH_AREA_SIZE = 100M        BITMAP_MERGE_AREA_SIZE = 100M        CREATE_BITMAP_AREA_SIZE = 100M   Which statement is true？（）

A. All the *_AREA_SIZE parameters are ignored.
B. The Automatic PGA Memory Management feature cannot be disabled.
C. The total Program Global Area （PGA） memory cannot be manually increased above 800M.
D. The total memory for the PGA can automatically exceed 800M using the Automatic PGA Memory Management feature.

单项选择题You have included the following parameter settings in your SPFILE：    SGA_MAX_SIZE=8G   SGA_TARGET=6G   DB_CACHE_SIZE=2G   SHARED_POOL_SIZE=1G   LOG_BUFFER=64M   DB_KEEP_CACHE_SIZE=960M   Which statement is true if you modify the SGA_TARGET initialization parameter？（）

A.The SGA_TARGET initialization parameter cannot be set to a value greater than 8G
B. The DB_CACHE_SIZE initialization parameter cannot be set to a value less than 2G
C. The DB_CACHE_SIZE initialization parameter cannot be set to a value greater than 2G
D. The DB_KEEP_CACHE_SIZE initialization parameter cannot be set to a value greater than 960M 
E. The DB_KEEP_CACHE_SIZE initialization parameter cannot be set to a value less than 960M