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Oracle Database 10g R2: Administering RAC Sample Questions:

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

2. You define the ERP service using this statement:
srvctl add service -d RACDB -s ERP -r RAC01 -a RAC02 -P PRECONNECT srvctl start service -d
RACDB -s ERP
You then use this connect string to connect to your RAC instances:
ERP =
(DESCRIPTION =(FAILOVER=ON)(LOAD_BALANCE=ON)
(ADDRESS=(PROTOCOL=TCP)(HOST=N1 VIP)(PORT=1521))
(ADDRESS=(PROTOCOL=TCP)(HOST=N2VIP)(PORT=1521))
(CONNECT_DATA = (SERVICE_NAME = ERP)
(FAILOVER_MODE =
(BACKUP=ERP_PRECONNECT)(TYPE=SESSION)(METHOD=PRECONNECT))))
You successfully establish a connection to your RAC database using the above connect string.
How many connections are established, and on which instances?

A) only one on RAC01
B) two on RAC02
C) two on RAC01
D) one on RAC01 and one on RAC02

3. View the Exhibit, which displays a portion of an ADDM report from a RAC database. Which three statements are true? (Choose three.)

A) The Findings Path section indicates that the Cluster wait class is consuming a significant proportion of the database time.
B) The ADDM report output reveals a "hot block" condition.
C) A LOCK TABLE statement is causing excessive inter-instance messaging.
D) The SQL statement with the ID dqsu2hwys8rcf was executed 40000 times

4. The following are some of the tasks that are performed during a RAC implementation: 1) Setting the Oracle database-related environment variables 2) Creating a password file 3) Installing Management Service and Management Agent 4) Creating and editing the Raw Device Mapping file 5) Creating an ASM instance 6) Creating the Oracle Cluster Registry (OCR) file 7) Implementing the Transparent Application Failover (TAF) policy 8) Creating database services Identify the tasks that can be performed using the DBCA, or performed by the DBCA, during database creation in the RAC implementation.

A) 2,3,5,7,8
B) 2,3,4,6,7
C) 1,3,4,6
D) All the tasks
E) 1,2,3,5,6,8

5. Which three statements regarding backup of the voting disk are true? (Choose three.)

A) A backup of the voting disk should be taken whenever an RMAN catalog reset is done.
B) Whenever a voting disk backup is made, the Clusterware software should be stopped on all nodes in the cluster.
C) A backup of the voting disk should be taken whenever an existing node is removed from the cluster.
D) A backup of the voting disk should be taken whenever a new node is added to the cluster.
E) On UNIX platforms, the voting disk can be backed up with the dd command.

Solutions:

Question # 1 Answer: D,E,G

Question # 2 Answer: D

Question # 3 Answer: A,C,D

Question # 4 Answer: A

Question # 5 Answer: C,D,E