187.Which two statements describe good practices for an application developer to reduce locking conf
2016-08-16 11:56
661 查看
187.Which two statements describe good practices for an application developer to reduce locking
conflicts in Oracle database? (Choose two.)
A.Avoid coding unnecessary long-running transactions.
B.Allow the database to handle locks in default locking mode.
C.Always explicitly code the locks as per the requirement of the application.
D.Allow escalation of row locks to block locks if too many row locks cause problem.
答案：AB
A:正确，减小事务造成锁的时间
B:正确，使用oracle内部机制来进行处理这些
C:错误，这个只是加重了锁
D:错误，如果升级到块锁那锁的范围更大
conflicts in Oracle database? (Choose two.)
A.Avoid coding unnecessary long-running transactions.
B.Allow the database to handle locks in default locking mode.
C.Always explicitly code the locks as per the requirement of the application.
D.Allow escalation of row locks to block locks if too many row locks cause problem.
答案：AB
A:正确，减小事务造成锁的时间
B:正确，使用oracle内部机制来进行处理这些
C:错误，这个只是加重了锁
D:错误，如果升级到块锁那锁的范围更大
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.)