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Oracle Database 10g R2: Administering RAC Sample Questions:

1. You are working as a DBA in a RAC environment that is available for testing. The RAC environment has all the database files stored in the OCFS file system. You plan to install ASM and move all the database files to ASM to achieve better performance. During the installation, you selected redundancy level as normal for the disk group being added. What is the reason for selecting this redundancy level?

A) You have two failure groups defined, so you want to use two-way mirroring.
B) You have three failure groups defined, so you want to use three-way mirroring.
C) You do not want to have any mirroring in the disk group.
D) You want to use hardware mirroring.

2. Your company requires that certain database systems be made continuously available because there are revenue-earning applications using Oracle databases. You already use RAC; it is a requirement for the applications to have continuous read and write access to all schema objects in the database during routine DBA maintenance activities. Which three technologies would you recommend for minimizing planned downtime for the application caused by unavailability of data due to those activities? (Choose three.)

A) Online Table Redefinition
B) Fast Start Fault Recovery
C) Rolling Release Upgrades
D) Online Index Rebuild
E) Bigfile Tablespaces
F) Hardware-Assisted Resilient Data

3. After the cluster database has been successfully created, several postinstallation tasks should be completed. Identify three of them. (Choose three.)

A) Create the ASM instance.
B) Set up additional required user accounts.
C) Verify the Enterprise Manager/Oracle Cluster Registry configuration by running srvctl config database -d db_name.
D) Initialize the cluster backup procedure.
E) Back up the root.sh script.

4. You defined the HR service using the following command:
srvctl add service -d RACDB -s HR -r RAC02.RAC03 -a RAC01
After a while, you realize that there is a workload peak on the HR service, and you decide to temporarily start HR on the RAC04 instance.
Which command or series of commands would you use to start HR on RAC04?

A) srvctl modify service -d RACDB -s HR -i RAC02.RAC03.RAC04 -a RAC01
B) srvctl remove service -d RACDB -s HR Srvctl add service -d RACDB -s Hr-r RAC02.RAC03.RAC04 -a RAC01 srvctl start service -d RACDB -s HR
C) srvctl remove service -d RACDB -s HR Srvctl add service -d RACDB -s Hr-r RAC02.RAC03.RAC04 -a RAC01
D) srvctl modify service -d RACDB -s HR -i RAC02.RAC03.RAC04 -a RAC01 srvctl stop service -d RACDB -s HR srvctl start service -d RACDB -s HR
E) srvctl start service -d RACDB -s HR -i RAC04

5. You are implementing a three-node RAC setup in your company. You have already performed these tasks:
1) Hardware and OS configuration 2) Cluster file system installation 3) Clusterware installation You executed the following command in one of the nodes: cluvfy stage -pre dbinst -n all
What is the reason for executing this command?

A) to check for node connectivity and Clusterware integrity
B) to check whether the dbinst directory is available on all the nodes
C) to check for the existence of Oracle database software installation files in the /stage directory on all the nodes
D) to check if the ORACLEJHOME environmental variable is set to a correct value or not before the database installation

Solutions: