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Oracle Database 10g R2: Administering RAC Sample Questions:

1. After a failed cluster database creation process, you realize that the contents of the OCR does not
match the current cluster configuration anymore. Before you started the database creation
process, you created a logical backup of the OCR, and now you want to use this logical backup to
bring the OCR contents in sync with the current cluster configuration.
Which commands would you use and in which order to accomplish this task?
1 OCRCONFIG -REPAIR (on the local cluster node only)
2 OCRCONFIG -REPAIR (on all cluster nodes)
3 OCRCONFIG -RESTORE <path name>
4 OCRCONFIG -IMPORT <path name>
5 CRSCTL STOP CRS (on the local cluster node only)
6 CRSCTL STOP CRS (on all cluster nodes)
7 OCRCONFIG -SHOWBACKUP
8 CRSCTL START CRS (on the local cluster node only)
9 CRSCTL START CRS (on all cluster nodes)

A) 7,6,4,9.
B) 6,3,9.
C) 7,6,3,2,9.
D) 7,6,3,9.
E) 5,3,8.
F) 5,4,8.
G) 6,4,9.

2. You are preparing to create a RAC cluster. You review the RAC requirements for UNDO tablespaces. Which three are valid statements? (Choose three.

A) If no UNDO tablespace is available when the instance starts, the instance stores undo records in the SYSTEM rollback segments.
B) You cannot assign a specific UNDO tablespace to a specific instance.
C) ALTER DATABASE SET UNDO_TABLEPACE=undotbs3 SID='RDBD01'; is correct.
D) ALTER SYSTEM SET UNDO_TABLESPACE=undotbs3 SID='RDBD01'; is correct.
E) It is not necessary to assign a specific UNDO tablespace to a specific instance.

3. Several steps must be followed to successfully add a node to your cluster database. Assuming that a UNIX platform is used, which of the steps listed below is not correct? (Choose the incorrect step.

A) Configure the OS and hardware for the new node.
B) Add instances via DBC
C) Reconfigure listeners for the new node with netca.
D) Add the RAC software to the new node using orainstRoot.sh from ORACLEJHOM
E) Add the node to the cluster using the addnode.sh script run from ORA_CRS_HOME.

4. 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 directory path for the Oracle 10g Database software must not be the same as the Oracle 10g Clusterware home directory.
C) The OUI does not support a RAC installation if the Standard Edition is chosen from the Installation Type page.
D) 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.

5. 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 is currently unavailable. You also notice 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 the system reboot, 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 started by CRS after the system was rebooted, but someone stopped it from within SQL*Plus.
B) The database instance's autostart attribute indicates that CRS should not restart it after system boot.
C) The instance was not started by CRS because its target state was set to "offline" before the system was rebooted.
D) The instance could not be started by CRS because this instance depends on an ASM instance, which has its autostart attribute set to a value, thereby preventing CRS from starting this ASM instance after a system reboot.
E) The instance was started by CRS but due to multiple instance failures CRS disabled the database instance, thereby preventing further restarts.

Solutions: