（257）Which client requests to the database can be captured as a part of the workload capture? (Choose all that apply.)

   A. flashback query                                                                

   B. distributed transactions

   C. logging in and logging out of sessions

   D. all DDL statements having bind variables

   E. direct path load of data from external files

答案：（C、D）

解析：

A（X），闪回查询并不修改数据，分布式事务也不会被捕获

E（X），direct path load根本不会占数据缓冲区，不会被捕获