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Oracle Database 10g R2: Administering RAC Sample Questions:

1. Which two statements are true regarding high availability in a RAC environment? (Choose two.)

A) Each primary RAC instance must send its redo stream to the same standby RAC instance.
B) When you have a serious crash of your primary site, Data Guard Broker automatically initiates the failover to the standby site.
C) When you have a serious crash of your primary site, it is your responsibility to initiate the failover to the standby site in case you are not using the Fast-Start Failover feature.
D) It is the Data Guard Broker's responsibility to communicate with CRS during a switchover operation to stop and start services according to each Data Guard site role.
E) You can have multiple RAC instances apply standby redo log files to the standby database.

2. Richard is a senior DBA and has prepared a plan for RAC implementation in his company. Given below are some of the tasks that he would perform as part of the plan: 1) Creating the Raw Devices Mapping file 2) Creating database services 3) Binding the partitions to raw devices 4) Creating the Voting Disk file 5) Creating an initialization parameter file 6) Creating the Oracle Cluster Registry (OCR) file 7) Creating the tnsnames.ora file 8) Creating the database control file
During the creation of the RAC database, Richard can use the Database Configuration Assistant (DBCA) to perform some of these steps but not all of them. Which steps should be completed before Richard starts creating the database by using DBCA?

A) 2, 5,7,8
B) 1, 2,4,5,6,7
C) 3, 4,6,7,8
D) 1, 3,4,6
E) 2, 5,6,7,8

3. Which two statements regarding the installation of the Oracle 10g Database software are true? (Choose two.)

A) If the OUI does not display all of the available nodes in your cluster, check the viability of your cluster and its associated nodes by executing the chkcluster command from $ORA_CRS_HOME/bin directory.
B) The Oracle Universal Installer (OUI) can detect the cluster hardware and allow the user to install the software on the local node or choose all nodes to install the software.
C) The directory path for the Oracle 10g Database software must not be the same as the Oracle 10g Clusterware home directory.
D) The OUI does not support a RAC installation if the Standard Edition is chosen from the Installation Type page.

4. View the Exhibit and examine the diagram of the RAC environment implemented on a Linux platform in your company.
As a senior DBA, you have been assigned the task to implement ASM in this environment. You configured the raw devices that you plan to add to the ASM disk group.
How would you create an ASM instance on each node? (Choose all that apply.)

A) by using DBCA on all nodes
B) by using the oracleasm configure command on any of the nodes
C) by using Oracle Universal Installer (OUI) on any one of the nodes
D) by using the oracleasm configure command on both the nodes
E) by using the ASMCMD command-line utility on both the nodes
F) by using Database Configuration Assistant (DBCA) on any one of the nodes

5. 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 create a logical export from the OCR by using the OCRCONFIG command and analyze the export file for errors.
B) 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.
C) 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.
D) You can check whether the OCR is not corrupted by using the OCRCHECK command.
E) There is no easy way to check your OCR for corruptions.

Solutions: