考试052最新考试题库解析_精品文档_002.pptx

1、2018年OCP 052最新考试题库解析-20180608,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整理：CUUG,2018年OCP 052最新考试题库解析-20180608,1、Which three are true about undo segments and undo tablespaces in the same database and instance?A.Multiple transactions run by the same Oracle user can share a single un

2、do 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 always created for each transaction

3、.F.A database can have multiple undo tablespaces.Correct Answer:ABF,2018年OCP 052最新考试题库解析-20180608,2、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 to validate dat

4、abase 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,2018年OCP 052最新考试题库解析-20180608,3、Which two are true about Oracle Data Pump in Oracle Datab

5、ase 11g 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 compression

6、 levels to be defined for the export.Correct Answer:BE,2018年OCP 052最新考试题库解析-20180608,4、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,ex

7、ample01.dbf;Which 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.dbfCorrect Answer:ACFH,2018年OCP 052最新考试题库解析-20180608,5、When does an incremental checkpoint occur?A.when DBWn writes dirty buffers as part of its norma

8、l process B.when the alter system checkpoint statement is executed.C.when a user tablespace is taken offline D.when an online redo log switch occurs Correct Answer:A,2018年OCP 052最新考试题库解析-20180608,6、Examine this query and its output:SQL select sid,event,blocking_session from v$session where blocking_

9、session is not null;SIDEVENTBLOCKING_SESSION-105enq:TX row lock contention15Which two are true?A.The blocked session is waiting on a shared table lock.B.The blocked session is waiting on an enqueue.C.The blocking session is waiting on a row-level lock.D.Session 105 is blocked by session 15.E.Session

10、 105 is blocking session 15.Correct Answer:BD,2018年OCP 052最新考试题库解析-20180608,7、In one of your databases:1.USER1 and USER2 have no system privileges.2.ROLE1 only has these privileges:*create session*create table*create viewExamine these commands:SQL conn/as sysdbaConnectedSQL GRANT create table,role1

11、to user1 with admin option;grant successedSQL conn user1/oracle_4uConnectedSQL GRANT role1 to user2;grant successed7、Which command would you execute and as which user,to revoke the createtable privilege from USER2?A.Revoke create table from user2 as user1 B.Revoke create table from user1 as sys C.Re

12、voke create table from role1 as user1 D.Revoke create table from 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,2018年OCP 052最新考试题库解析-20180

13、608,8、Which two are true about server-generated alerts?A.Stateful alerts must always 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

14、in DBA_OUTSTANDING_ALERTS.F.They can be based only on instance metrics.Correct Answer:BE,2018年OCP 052最新考试题库解析-20180608,9、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 delet

15、e the data files but not the services.B.DBCA shuts down the instance and deletes the database.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,2018年OCP 052最新考试题库解析-20180608,10、Which is true when

16、a database instance is shut down?A.IMMEIATE,TRANSACTIONAL,and NORMAL modes wait for all uncommitted transactions 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 mode rolls back uncommitted transactions.Correct Answer:B,2018年OCP 052最新考试题库解析-20180608,11、The OR