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Oracle Database 10g R2: Administering RAC Sample Questions:

1. You are considering issues involving backup and recovery of the voting disk. Select four correct statements. (Choose four.)

A) Backup can be performed online.
B) If you lose your voting disk and do not have a backup, you must reinstall Oracle Clusterware.
C) You can determine the voting disks currently used by CSS with the command crsctl query ess votedisk.
D) To back up the voting disk, use the command ocrconfig -export.
E) Use symbolic links to simplify recovery of the voting disk.

2. You have a four-node cluster with instances RDBD1, RDBD2, RDBD3, and RDBD4. While evaluating statspack reports, you find nq: TX- index contention on page one under the category op 5 Timed Events.
Further study finds an unusually high number of c buffer busy waits in the Wait Events section. Checking the Instance Activity Stats section, you see an unusually high value for eaf Node Splits. Using v$segment_statistics, you identify that the top segment with c buffer busy waits is the index prooducts_pk, which obtains the primary key from a sequence. You wish to present alternative solutions to the team to help reduce contention.
Which three actions would you recommend to reduce the overheads? (Choose three.

A) Set fast_start_mttr_target to a higher value.
B) Set _lm_msg_batch_size to a higher value.
C) Increase the sequence cache size if retaining the sequence.
D) Re-create the table using a natural key instead of a surrogate key.
E) Re-create the index as a global hash partitioned index.
F) Encourage shorter transactions.

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 to set the appropriate raw partition for each database file.
C) You want the DBCA to bind the partitions to raw devices.
D) You want to configure an ASM diskgroup containing raw devices.

4. You decide to implement Fast Start Failover for your RAC Data Guard configuration to improve your high availability strategy. Which are the two valid locations for the DG Broker configuration files? (Choose two.)

A) on the storage that is shared between the observer location and at least one of the instances that is part of the data guard configuration
B) on the shared storage at the standby location
C) on the shared storage at the observer location
D) on the local storage at the observer location
E) on the shared storage at the primary location

5. View the Exhibit, which displays the cluster database performance page after the same workload has been executed three times on your cluster without varying any non-Oracle workloads on the cluster. What are the two ways by which you can tell that the corresponding application was better tuned during the second and third execution? (Choose two.)

A) The database throughout graphic is below the red dashed line during the last execution.
B) The run queue length is going down each time.
C) The number of transactions per second is getting higher each time.
D) It takes less time to execute the workload each time.
E) There is less paging each time

Solutions: