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Oracle 1Z0-048 Exam Syllabus Topics:

Oracle Database 10g R2: Administering RAC Sample Questions:

1. View the Exhibit, which displays a portion of an ADDM report from a RAC database. Which three statements are true? (Choose three.)

A) The ADDM report output reveals a "hot block" condition.
B) The SQL statement with the ID dqsu2hwys8rcf was executed 40000 times
C) A LOCK TABLE statement is causing excessive inter-instance messaging.
D) The Findings Path section indicates that the Cluster wait class is consuming a significant proportion of the database time.

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

3. Your company is about to switch from one Internet Service Provider (ISP) to another, and this change of ISP comes along with a whole new set of network addresses. Your job is to change the VIP addresses of your company's Oracle Cluster.
How would you apply this change?

A) Change the VIP addresses in DNS and the cluster would pick up the new addresses automatically.
B) Change the VIP addresses on the cluster using SRVCTL while the cluster is fully functional.
C) Stop all VIP-dependent components on all cluster nodes, make the necessary changes in DNS, and then restart all VIP-dependent components.
D) Reinstall the Oracle Clusterware layer of your cluster.
E) Stop all VIP-dependent cluster components on one node, make the necessary changes in DNS, change the VIP using SRVCTL, restart all VIP-dependent components, and then perform these steps on al the remaining nodes one at a time.

4. What is the action of your client connection when it is using the following connect string? net_service_name= (DESCRIPTION (ADDRESS=(PROTOCOL=tcp)(HOST=sales1 -svr-vip)(PORT=1521)) (ADDRESS=(PROTOCOL=tcp)(HOST=sales2-svr-vip)(PORT=1521))) (CONNECT_DATA=(SERVICE_NAME=sales. us. acme, com)))

A) It always connects you to the least loaded node.
B) It tries to connect you to the listener on SALES2-SRV-VIP if the listener on SALES1-SRV-VIP is down.
C) It randomizes its connection on the available listeners.
D) It always connects you to the first protocol address.

5. 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) Index Range Scans would cause I/O to many different physical disks.
C) The LUNs are not aligned with ASM Allocation Units, which may lead to I/O bottlenecks.
D) I/O to the flash recovery area disk group for backups may cause performance issues when full table scans are occurring during batch workloads.

Solutions: