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Oracle Database 10g R2: Administering RAC Sample Questions:

1. To complete a cluster database creation, the DBA must choose the cluster database storage method. Which storage choice is not correct? (Choose the incorrect one.)

A) Supported SAN/NAS storage
B) Cluster File System
C) Standard UNIX file system
D) Automatic Storage Management (ASM)
E) Raw Devices

2. Which two statements about parallel recovery in a RAC environment are true? (Choose two.)

A) Parallel recovery is most effective at reducing recovery time while concurrently recovering several data files on several disks.
B) The use of the RECOVER Y_PARALLELISM initialization parameter is the only way to initiate parallel recovery.
C) The RECOVER Y_PARALLELISM initialization parameter causes serial recovery if the value is greater than two.
D) The RECOVERY_PARALLELISM initialization parameter specifies the number of redo application server processes participating in instance or media recovery.

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

4. Your four-node RAC cluster is no longer coping with workloads for one of its databases at peak periods and you decide to add another node to the cluster. The current configuration has two RAC databases, each with four instances with only the second database using ASM as a clustered database file system. ASM is installed in a separate home. Which five steps must you take to add all the software components and processes to the new node before you run DBCAto add database and ASM instances on the new cluster nodes. Do not be concerned with the correct sequence for the steps. (Choose five.)

A) Run netca from the new node to add a listener to the new node.
B) Run addnode.sh in the Clusterware home/oui/bin directory from one of the existing nodes to define the new node to all existing nodes.
C) Run addNode.sh in the RDBMS home/oui/bin directory from one of the existing nodes.
D) Run cluvfy stage -pre crsinst <list of all nodes> from one of the existing nodes to verify the cluster configuration.
E) Run addNode.sh in the ASM home/oui/bin directory from one of the existing nodes.
F) Run addnode.sh in the Clusterware home/oui/bin directory from each of the existing nodes once to define the new node to each existing node.
G) Run racgons add_config from one of the existing nodes to add the ONS metadata to the OCR.

5. After a failed cluster database creation process, you realize that the contents of the OCR does not
match the current cluster configuration anymore. Before you started the database creation
process, you created a logical backup of the OCR, and now you want to use this logical backup to
bring the OCR contents in sync with the current cluster configuration.
Which commands would you use and in which order to accomplish this task?
1 OCRCONFIG -REPAIR (on the local cluster node only)
2 OCRCONFIG -REPAIR (on all cluster nodes)
3 OCRCONFIG -RESTORE <path name>
4 OCRCONFIG -IMPORT <path name>
5 CRSCTL STOP CRS (on the local cluster node only)
6 CRSCTL STOP CRS (on all cluster nodes)
7 OCRCONFIG -SHOWBACKUP
8 CRSCTL START CRS (on the local cluster node only)
9 CRSCTL START CRS (on all cluster nodes)

A) 5,4,8.
B) 7,6,4,9.
C) 5,3,8.
D) 7,6,3,2,9.
E) 6,3,9.
F) 7,6,3,9.
G) 6,4,9.

Solutions: