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Oracle 1Z0-048 Exam Syllabus Topics:

Oracle Database 10g R2: Administering RAC Sample Questions:

Question 1

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 and one of the cluster ASM instances are currently unavailable. You also see 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 system boot, 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" a while before the system was rebooted.
B. The instance was started by CRS but due to multiple instance failures CRS disabled the database instance, thereby preventing further restarts.
C. The database instance autostart attribute is set to a value, thus preventing CRS from starting it after a system reboot.
D. The instance was started by CRS after the system was rebooted, but someone stopped it from within SQL*Plus.
E. The database instance could not be started by CRS because this instance depends on an ASM instance, whose autostart attribute indicates that CRS should not start this ASM instance after system boot.

Question 2

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

Question 3

You are about to build a new Oracle Clusterware-based cluster and you want to make the installation process as smooth as possible. You decide to use the Cluster Verification Utility (CLUVFY) to check whether or not your system administrator has set up the hardware and system software correctly. Which two statements about CLUVFY are true? (Choose two.)

A. After the Oracle Clusterware installation, you can run CLUVFY from the Oracle Home that holds the CRS binaries.
B. You can run CLUVFY directly from the Oracle Clusterware distribution media.
C. You have to install CLUVFY on all cluster nodes in order to use CLUVFY on other nodes than the one from which you perform the installation.
D. You can run CLUVFY only from a privileged operating system account.
E. CLUVFY cannot be used until the Oracle Clusterware is installed successfully.
F. To use CLUVFY during the Oracle Clusterware installation, you have to download CLUVFY from the Oracle Technology Network (OTN) Web site and install it before you can use it.

Question 4

Which three statements are correct regarding ASM instances in a RAC environment? (Choose three.)

A. ASM instances can use different values for ASM_POWER_LIMIT.
B. ASM instances can mount different sets of disk groups.
C. ASM instances must all have the same value for ASM_DISKSTRING.
D. ASM instances recognize their disks by looking at their headers.
E. ASM instances must all have the same value for ASM DISKGROUPS.

Question 5

Which three statements regarding backup of the voting disk are true? (Choose three.)

A. On UNIX platforms, the voting disk can be backed up with the dd command.
B. Whenever a voting disk backup is made, the Clusterware software should be stopped on all nodes in the cluster.
C. A backup of the voting disk should be taken whenever a new node is added to the cluster.
D. A backup of the voting disk should be taken whenever an RMAN catalog reset is done.
E. A backup of the voting disk should be taken whenever an existing node is removed from the cluster.

Solutions: