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Oracle Database 10g R2: Administering RAC Sample Questions:

1. You define the ERP service using this statement:
srvctl add service -d RACDB -s ERP -r RAC01 -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))
(CONNECTJDATA = (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) two on RAC01
B) two on RAC02
C) one on RAC01 and one on RAC02
D) only one on RAC01

2. After a power failure, you noticed that one of your cluster database instances did not start automatically, whereas all other instances came up successfully. What would you do to determine the precise cause for the instance startup failure? (Choose three.)

A) Reboot the node where the failing instance resides to check if the problem is persistent.
B) Check the alert.log file that belongs to the instance that did not start.
C) Check the resource state by using the CRS_STAT command.
D) Check for OCR corruptions by using the OCRCHECK command.
E) Check the alert.log file that belongs to the Oracle Clusterware software.
F) Enable extra debugging in the Oracle Clusterware software by using the CRSCTL command.
G) Check if the Oracle Clusterware is functional by using the CRSCTL command.

3. You are creating a database in your RAC implementation. You are using the DBCA to create the database, and you selected the Raw Devices Mapping file on one of the screens of the DBCA. What is the reason for selecting this file?

A) You want to provide the DBCA with a list of all the storage devices that are currently bound to a raw interface.
B) You want the DBCA to bind the partitions to raw devices.
C) You want to set the appropriate raw partition for each database file.
D) You want to configure an ASM diskgroup containing raw devices.

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

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

5. Which two statements are true regarding high availability in a RAC environment? (Choose two.)

A) When you have a serious crash of your primary site, Data Guard Broker automatically initiates the failover to the standby site.
B) Each primary RAC instance must send its redo stream to the same standby RAC instance.
C) When you have a serious crash of your primary site, it is your responsibility to initiate the failover to the standby site in case you are not using the Fast-Start Failover feature.
D) It is the Data Guard Broker's responsibility to communicate with CRS during a switchover operation to stop and start services according to each Data Guard site role.
E) You can have multiple RAC instances apply standby redo log files to the standby database.

Solutions:

Question # 1 Answer: D

Question # 2 Answer: B,C,E

Question # 3 Answer: C

Question # 4 Answer: A,B,E

Question # 5 Answer: C,D