单选题 Which one of the following RMAN commands is used to register the database files with repository that were backed up using O/S commands?()
CHANGE
CATALOG
CROSSCHECK
SWITCH
多选题 Which two file types must be included in a closed database backup taken with operating system commands?()
data files
control file
password file
online redo log files
initialization parameter file
单选题 Which of the following steps is incorrect in the following sequence of enabling the ARCHIVELOG mode of a database?()
Shut down the database.
Set the appropriate parameters in init.ora file.
Start the database in NOMOUNT state.
Issue the ALTER DATABASE ARCHIVELOG command.
Open the database.
Take a full closed backup.
单选题 Which modifier is used to change listener parameters in the Listener Control utility environment?()
SET
ALTER
CHANGE
UPDATE
单选题 Which background process is responsible for writing the dirty buffers from the write list to the data files during a checkpoint?()
CKPT
SMON
LGWR
DBWn
ARCn
多选题 Which two are true regarding external tables? ()
External tables can be updated.
External tables are read-only tables.
Indexes can be created on external tables.
Indexes cannot be created on external tables.
单选题 The EMPLOYEES table has six indexes and DML operations are slow. Which command begins monitoring the EMPLOYEE_IDX_FK index to determine whether it has been used by an execution plan?()
ALTER TABLE employees monitor index employee_idx_fk;
ALTER INDEX employee_idx_fk monitoring on;
ALTER TABLE employees monitor all indexes;
ALTER INDEX employee_idx_fk monitoring usage;
单选题 Which statement correctly describes the function of Oracle9i Cache Fusion feature?()
It provides each session with its own view of the database at a different point in the past.
It enables you to execute scalable applications on a clustered database without having to partition the users or the database tables.
It lets you dynamically reassign memory in your database buffer cache to different block buffer sizes.
It allows you to add new sites to multimaster replication environment without quiescing the master definition site.
在任何情况下,伸缩调节器处轨距的要求为()。
人类有两套影响学习的记忆系统:陈述性记忆和程序记忆。陈述性记忆是对事实或者词汇之类基本认识的记忆。而程序记忆,就是一个人“不劳而获”的记忆。程序记忆是人养成习惯和习得技巧的方式,比如骑自行车。在很多时候,这种学习是无意识的。人们用早期发育的程序记忆系统来学习复杂的东西,比如语法规则。帮助人们学习词汇的陈述性记忆系统,则需要更多时问完成发育。儿童拥有程序记忆系统,并且不受陈述性记忆系统的干扰。由此可以推出()。
宋末元初四大家
公平目标的实现可以通过()实现。
荟萃分析
人员安全疏散分析的性能判定标准为:可用疏散时间(A.SET)必须()必需疏散时间(RSET)。
预防HIV感染的主要措施应当为( )
简述我国混合型债券市场的发展状况。
造成水中某些污染物在生物体内含量大大高于水体中的浓度的生物放大作用是指()
输血的适应证中,不包括()