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Oracle Database 10g R2: Administering RAC Sample Questions:

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

2. Your storage administrator informs you about some disk corruption issues in the disk subsystem where your Oracle Cluster Registry (OCR) is located. Your storage administrator has resolved these corruption issues by applying a patch to the storage subsystem, but to be sure that the OCR is not affected by this problem the administrator wants you to check the integrity of the OCR. How would you do this?

A) You can check whether the OCR is not corrupted by using the OCRCHECK command.
B) You dump the OCR contents into a text file by using the OCRDUMP command, and if that succeeds without errors you know that your OCR is not corrupted.
C) You create a physical backup of the OCR by using the OCRCONFIG command, and if this succeeds without errors you know that the OCR is not corrupted.
D) There is no easy way to check your OCR for corruptions.
E) You create a logical export from the OCR by using the OCRCONFIG command and analyze the export file for errors.

3. View the Exhibit.
You are required to support your Oracle RAC configuration using ASM and RAID technology. You plan to discuss the storage configuration with the storage technology team. They have proposed a configuration as shown in the exhibit with a separate set of LUNs for the data disk group and the flash recovery area disk group and a 500 KB stripe size in line with other non-Oracle LUNs. The Data disk group has four250G LUNs and the FRA disk group has four500G LUNS, both of which are mirrored.

A) Retention policies that require backups to be kept for long time periods may cause wasted space due to large allocation units.
B) The LUNs are not aligned with ASM Allocation Units, which may lead to I/O bottlenecks.
C) I/O to the flash recovery area disk group for backups may cause performance issues when full table scans are occurring during batch workloads.
D) Index Range Scans would cause I/O to many different physical disks.

4. Which parameter file should you use to configure the Oracle notification server on your RAC nodes?

A) $ORACLE_HOME/opmn/conf/ons. config
B) $ORA_CRS_HOME/opmn/conf/ons. config
C) $ORA_CRS_HOME/racg/usrco/ons. config
D) $ORACLE_HOME/racg/usrco/ons.config

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

Solutions: