Oracle OCP 19c 认证1Z0-083考试(110-115题) #7月最新

Posted 2022-11-27 wwwleoocom

1.    Which two are prerequisites for creating a backup-based duplicate database?

A. connecting to the target database and a recovery catalog to execute the duplicate command B. creating a password file for an auxiliary instance

C. connecting to an auxiliary instance

D. matching the database identifier (DBID) of the source database and the duplicate database E. creating an SPFILE for the target database

Answer: BC

(解析:Oracle 在文档中指出,复制数据库时可以连接目标数据库或者 recover catalog 数 据库或者都不连接。 经过测试,确实是可以的。但是辅助实例是肯定要连接的,spfile 是在 复制过程中自动创建,dbid 复制后会不一样。 所以根据排除法,正确的答案应该是 BC, 真是让人意想不到,不做实验无法真实的去判断答案。Reference:http://docs.oracle.com/cd/E11882_01/backup.112/e10643/rcmsynta020.htm#CH DEDFFH

)

73、
.Your production database is running in archivelog mode. You use RMAN with a recovery catalog
to back up your database to media and the database is uniquely identified in the recovery catalog. You want to create a test database from the production database and allow the production database to remain open during the duplicate process. You restore the database backups to a new host with the same directory structure as the production database and want to use the recovery catalog for future backups after the database is successfully restored to the new host. How would you achieve this?

A.    by using the RMAN switch command to set the new location for the data files

B.    by using the RMAN duplicate command with nofilenamecheck to recover the database to the new host

C.    by using the RMAN duplicate command with dbid and set new name for tablespace to recover the database to the new host
 
D.    by creating a new database in the new host, and then using the RMAN recover command Answer: B
( 因为是恢复的相同的路径下,所以 duplicate 的时候要用到 nofilenamecheck 选项,命令 如下: duplicate target database from active database do recover nofilenamecheck;)

74、

Which two are true about Rapid Home Provisioning (RHP), which has been available since Orcale 18c?

(Choose two.)

A.    It is an Oracle Database service

B.    It cannot be used to upgrade Oracle Database homes.

C.    It can be used to provision applications.

D.    It can be used to patch Grid Infrastructure homes containing Oracle Restart.

E.    It can be used to provision middleware.

Answer: CE (解析:
RHP (Rapid Home Provisioning) 服务依赖于 Grid Infrastructure。她存储和管理了很多
ORACLE_HOME 的模板,我们称之为“Gold Images”。 您可以向数据中心中的任何节点部署 基于“Gold Images”的副本(working copy 实际上就是基于 Gold Image 部署的 ORACLE HOME)。RHP 支持 Oracle Home、Oracle Database、Grid Infrastructure、和新集群(前提是需要操作系统和网络已配置好)的部署,以及 GI、DB 的升级和迁移等,还支持第三方的软件。

Gold Images 集中存储,包括 GI、DB、应用、中间件等

Reference: https://www.oracle.com/assets/rapid-home-provisioning-2405191.pdf

)

75、
Examine this configuration:

1.    CDB1 is a container database.

2.    COMMON_USER_PREFIX is C##.

3.    PDB1 is a pluggable database contained in CDB1.
 
4.    APP1_ROOTis an application container contained in CDB1. 5. APP1_PDB1 is an application PDB contained in APP1_ROOT. You execute these commands successfully:

Which two are true? (Choose two.)

A.    APP1_USER1can be created in PDB1.

B.    APP1_USER1can be created in CDB1.

C.    APP1_USER1 can have different privileges in each Application PDB contained in APP1_ROOT. D. C##_APP_USER1 can be created in CDB1.

E. P1_USER1can be created in CDB1.

F. C##_USER1will have the same privileges and roles granted in all PDBs in CDB1.

Answer: CD

(解析:本地用户只能在 pdb 中创建,通用用户只能在 CDB 中创建。因为 APP1_USER1 属于
Application 中的用户,所以当 Application pdb 同步时,权限就会一样。) 
76、

Which two are facets of performance planning that should always be considered or implemented for an Oracle Database environment? (Choose two.)

A. defining primary keys for all tables to speed up all queries B. using check constraints to speed up updates

C.    defining foreign keys for all tables to speed up joins

D.    the physical data model

E.    the configuration of storage arrays Answer: DE
(解析:考虑数据库性能,存储阵列一定要配置好,还有物理的数据模型,直接影响数据库    的性能。) 由于物理模型与具体数据相关,所以他们的元素不尽相同,但有些共有的如下:
1.    Table(表) 表中有属性(Attribute),属性有主属性(Key)和非主属性,还有外码,属性还有值域
(Domain)等 等

2.    View(视图) 基于某一张或多张表而创建的逻辑表 3. Procedure(存储过程)

4. Index(索引)