Oracle Database 10g R2: Administering RAC : 1Z0-048

1Z0-048 real exams

Exam Code: 1Z0-048

Exam Name: Oracle Database 10g R2: Administering RAC

Updated: Jul 26, 2026

Q & A: 150 Questions and Answers

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Oracle 1Z0-048 Exam Syllabus Topics:

SectionObjectives
High Availability Concepts- RAC recovery scenarios
- Failover mechanisms
Installation and Configuration- Installing RAC database software
- Preparing RAC environment
- Installing Oracle Clusterware
Performance and Tuning- Troubleshooting performance issues
- Load balancing and failover
- Monitoring RAC performance
Cluster and Database Administration- Services configuration and management
- Managing RAC instances
- Backup and recovery in RAC
Oracle RAC Architecture- Cache Fusion and interconnect communication
- Shared storage concepts
- Cluster fundamentals and components

Oracle Database 10g R2: Administering RAC Sample Questions:

1. You want check whether the group services node application is running on all the nodes in your cluster before you create a cluster database. Which utility can you use to make sure the node application is running on all nodes in the cluster?

A) onsctl
B) Isnrctl
C) crsctl
D) crs_stat
E) addnode.sh


2. In which two orders could you run the following commands to migrate your database to ASM?
(Choose two.)
1 SHUTDOWN IMMEDIATE;
2 SWITCH DATABASE TO COPY;
3 STARTUP NOMOUNT;
4 ALTER DATABASE OPEN;
5 ALTER DATABASE TEMPFILE '/u01/ORCL/temp1.dbf DROP;
6 ALTER SYSTEM SET db_create_file_dest='+DATA' SCOPE=SPFILE;
7 BACKUP AS COPY DATABASE FORMAT '+DATA';
8 ALTER TABLESPACE temp ADD TEMPFILE;
9 RESTORE CONTROLFILE FROM '/u01/ORCL7control1.ctl';
10 ALTER SYSTEM SET control_files=" SCOPE=SPFILE;
11 RECOVER DATABASE;
12 ALTER DATABASE MOUNT;

A) 1,2,10,3,5,4,11,6,7,8,9,12
B) 6,10,1, 3,9,12,7,2,11,4,8,5
C) 10,6,1, 3,9,12,7,2,11,4,8,5
D) 6,10,1, 3,9,12,7,2,11,8,4,5
E) 6,10,1, 9,3,12,7,2,11,4,5,8


3. Which two initialization parameters must be set to start up an ASM instance in a RAC environment? (Choose two.)

A) ASM_DISKGROUPS
B) B_UNIQUE_NAME
C) CLUSTER DATABASE
D) ASM_DISKSTRING
E) ASM_POWER_LIMIT
F) INSTANCE_TYPE


4. You are the administrator of a Linux-based Oracle cluster. To meet your company's disaster recovery requirements, you have to make backups of the OCR to a tape device. What are your options? (Choose all that apply.)

A) Use RMAN to back up the OCR from disk to tape.
B) Use the Linux DD command to write the OCR directly to tape.
C) Use your favorite tape backup command to back up the OCR from disk to tape.
D) Use your favorite tape backup command to back up the physical OCR backups from disk to tape.
E) Use the OCRCONFIG command to have CRSD write the OCR backup to tape for you.


5. You have attended a user group presentation on RAC and based on what you have learned you feel that your company would benefit from having the RAC option to meet its Oracle database requirements in several ways. Your manager does not know much about RAC and asks you to create a presentation to the team explaining RAC, and whether it should be implemented in your installation. Which three statements explain the benefits and implications of RAC? (Choose three.)

A) RAC would increase availability in the event of a network failure.
B) RAC would increase availability in the event of node and instance failures.
C) RAC would increase availability in the event of data failures.
D) RAC used in conjunction with parallel execution may provide speedup of DSS queries.
E) RAC used in conjunction with parallel execution may provide for speedup of OLTP workload processes.
F) RAC would increase scalability for all application workloads in all cases.
G) RAC alone would not help protect from human errors.
H) RAC alone would increase availability when doing release upgrades.


Solutions:

Question # 1
Answer: D
Question # 2
Answer: B,C
Question # 3
Answer: C,F
Question # 4
Answer: D
Question # 5
Answer: B,D,G

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