57.Automatic Shared Memory Management is disabled for your database instance. You realize that there
2016-07-23 23:30
1091 查看
57.Automatic Shared Memory Management is disabled for your database instance. You realize that there
are cases of SQL statements performing poorly because of repeated parsing activity, resulting in
degraation of performance.
What would be your next step to improve performance?
A.Run the SQL Access Advisor.
B.Run the Memory Advisor for the SGA.
C.Run the Memory Advisor for the PGA.
D.Run the Memory Advisor for the shared pool.
E.Run the Memory Advisor for the buffer cache.
答案：D
解析：题目说asmm禁用了，由于sql语句反复的解析使得执行效率比较低，导致整体性能降低，应该怎么做
sql语句执行的过程是，编译-执行-提取数据，其中编译的时候在共享池的库高速缓冲查找是否有相同的sql，如果
没有就进行编译，编译后放入共享的sql区，题目中说的也就是第一步，也就是shared pool，因此选择D
are cases of SQL statements performing poorly because of repeated parsing activity, resulting in
degraation of performance.
What would be your next step to improve performance?
A.Run the SQL Access Advisor.
B.Run the Memory Advisor for the SGA.
C.Run the Memory Advisor for the PGA.
D.Run the Memory Advisor for the shared pool.
E.Run the Memory Advisor for the buffer cache.
答案：D
解析：题目说asmm禁用了，由于sql语句反复的解析使得执行效率比较低，导致整体性能降低，应该怎么做
sql语句执行的过程是，编译-执行-提取数据，其中编译的时候在共享池的库高速缓冲查找是否有相同的sql，如果
没有就进行编译，编译后放入共享的sql区，题目中说的也就是第一步，也就是shared pool，因此选择D
内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理 
相关文章推荐
- 2.Which two statements are true about the Automatic Workload Repository (AWR)
- 3.While observing the index statistics, you find that an index is highly fragmented, thereby resulti
- 4.Your test database is running in NOARCHIVELOG mode. Which statement is true regarding the type of
- 5.The database instance is currently using SPFILE. View the Exhibit and examine the error that you
- 6.Note the following points describing various utilities in Oracle Database 11g:
- 7.You have issued a SHUTDOWN ABORT command to bring down your database instance. Considerthe steps t
- 8.Observe the information in the columns:
- 9.View the Exhibit and examine the privileges granted to the SL_REP user.
- 10.Examine the following statement that is used to modify the constraint on the SALES table:
- 11.Identify the memory component from which memory may be allocated for:
- 12.Which is the correct description of a pinned buffer in the database buffer cache?
- 13.You have executed this command to change the size of the database buffer cache:
- 14.These are points that describe the contents of different memory components:
- 15.Which two statements are true about Shared SQL Area and Private SQL Area? (Choose two.)
- 16.Note the following functionalities of various background processes:
- 17.Note the functionalities of various background processes:
- 18.View the Exhibit and identify the component marked with a question mark.
- 19.Which two statements about the background process of the database writer are true? (Choose two.)
- 20.You have set Tablespace Full Metrics Threshold values for the USERS tablespace as follows:
- 21.Which three statements are true about logical structures of the Oracle database? (Choose three.)