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Oracle Database 10g R2: Administering RAC Sample Questions:

1. You have migrated your 10g R1 cluster to 10g R2. You wish to create multiple copies of the voting disk. What must you consider when doing this?

A) If multiplexing, two voting disks on independent devices is ideal.
B) For the voting disk, it is better to rely on multipathing solutions instead of multiplexing.
C) If multiplexing, three voting disks on independent devices is ideal.
D) Since ASM is the stated direction of Oracle, ASM is the best storage for voting disks.

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

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

3. View the Exhibit.
Users complain about the performance of an Oracle database-based application. You are requested to investigate. From Grid Control, you immediately infer that one of the cluster database instances is currently unavailable. You also notice that the host where the instance belongs was recently rebooted due to an unknown reason.
Using Grid Control, you restart the instance and performance rapidly improves. You want to determine the cause of the instance startup failure after the system reboot, and you check the resource profiles on both the database and ASM instances involved.
Why was the instance not started by CRS?

A) The instance was not started by CRS because its target state was set to "offline" before the system was rebooted.
B) The instance was started by CRS after the system was rebooted, but someone stopped it from within SQL*Plus.
C) The instance could not be started by CRS because this instance depends on an ASM instance, which has its autostart attribute set to a value, thereby preventing CRS from starting this ASM instance after a system reboot.
D) The instance was started by CRS but due to multiple instance failures CRS disabled the database instance, thereby preventing further restarts.
E) The database instance's autostart attribute indicates that CRS should not restart it after system boot.

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

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

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

Solutions: