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1、052题库解析 最新16道题 题库新特点： 更加灵活，题库的顺序与考试时的顺序每场都在变化 更加考验知识点的掌握，题库答案为二，考试时要求选择 最佳一个答案 不断有新的考题出现，目前最新已经更新到130道题 每周五晚8点-直播地址： ocp考试讨论群：836361015 验证：ocp CUUG整理，官网： 1、Which three are true about undo segments and undo tablespaces in the same database and instance? A. Multiple transactions run by the same Oracle
2、 user can share a single undo segment. B. Multiple transactions run by different Oracle users can share a single undo segment. C. A serial transaction can use multiple undo segments. D. Undo segments are automatically dropped shortly after transactions that use them commit. E. A new undo segment is
3、always created for each transaction. F. A database can have multiple undo tablespaces. Correct Answer: ABF 2、Which two are true about the Data Recovery Advisor? A. It can be used only for databases that are running in ARCHIVELOG mode. B. It can be used when the database is closed. C. It can be used
4、to validate database recovery strategies. D. It provides intelligent database problem analysis. E. It can be used to validate database backup strategies. F. It can be used only for databases with FLASHBACK enabled. Correct Answer: CD 3、Which two are true about Oracle Data Pump in Oracle Database 11g
5、 Release 2? A. If the directory used in the export operation has existing dump files, it overwrites them. B. It allows encryption to be performed without using a password. C. It supports the renaming of tables during import. D. It supports the export of specific views as tables. E. It allows compres
6、sion levels to be defined for the export. Correct Answer: BE 4、For your ORCL database. 1. The instance is started using an spfile. 2. The database is opened. 3. It is in ARCHIVELOG mode. 4. CONTROL FILE AUTOBACKUP IS ON. Examine this command: RMAN backup as copy datafile users01.dbf,example01.dbf; W
7、hich four files are backed up? A. spfile B. undo01.dbf C. users01.dbf D. archivelogs E. sysaux01.dbf F. control file G. system01.dbf H. example01.dbf Correct Answer: ACFH 5、 When does an incremental checkpoint occur? A. when DBWn writes dirty buffers as part of its normal process B. when the alter s
8、ystem checkpoint statement is executed. C. when a user tablespace is taken offline D. when an online redo log switch occurs Correct Answer: A 6、 Examine this query and its output: Which two are true? A. The blocked session is waiting on a shared table lock. B. The blocked session is waiting on an en
9、queue. C. The blocking session is waiting on a row-level lock. D. Session 105 is blocked by session 15. E. Session 105 is blocking session 15. Correct Answer: BD 7、 In one of your databases: 1. USER1 and USER2 have no system privileges. 2. ROLE1 only has these privileges: * create session * create t
10、able * create view Examine these commands: 7 Which command would you execute and as which user, to revoke the create table privilege from USER2? A. Revoke create table from user2 as user1 B. Revoke create table from user1 as sys C. Revoke create table from role1 as user1 D. Revoke create table from
11、role1 as sys E. Revoke create table from user2 as sys Correct Answer: D 如果用user1回收角色的权限，会报错： SQL revoke create session from role1; revoke create session from role1 * ERROR at line 1: ORA-01031: insufficient privileges 8、 Which two are true about server-generated alerts? A. Stateful alerts must alway
12、s be cleared manually. B. They are visible in Oracle Enterprise Manager by default. C. All stateful alerts can be found in DBA_ALERT_HISTORY. D. They can be based only on database metrics. E. Stateless alerts cannot be found in DBA_OUTSTANDING_ALERTS. F. They can be based only on instance metrics. C
13、orrect Answer: BE 9、 Your database instance is in NOMOUNT state. Your select the delete option in the database configuration assistant (DBCA) for your database. What is the outcome? A. DBCA is able to delete the data files but not the services. B. DBCA shuts down the instance and deletes the databas
14、e. C. DBCA is able to delete the services but not the data files. D. DBCA prompts you to open the database, and then proceeds with the deletion. Correct Answer: D 10、 Which is true when a database instance is shut down? A. IMMEIATE, TRANSACTIONAL, and NORMAL modes wait for all uncommitted transactio
15、ns either to commit or rollback and then close the database B. IMMEIATE, TRANSACTIONAL, and NORMAL modes all result in a checkpoint C. Only TRANSACTIONAL, and NORMAL modes wait for all uncommitted transactions to commit or rollback and then close the database D. Neither the IMMEDIATE nor the ABORT m
16、ode rolls back uncommitted transactions. Correct Answer: B 11、 The ORCL database has CONTROL FILE AUTOBACKUP and BACKUP OPTIMIZATION enabled. USER1.EMP is a table in tablespace TBS1. There are no existing backups of the database. Examine these commands: What is the outcome? A. It takes a level 0 incremental backup of ORCL with TBS1. B. It take
