Exam Name: Oracle Database 10g R2: Administering RAC
Certification Provider: Oracle
Corresponding Certification: Other Oracle Certification
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Oracle 1Z0-048 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Installation and Configuration | - Installing Oracle Clusterware - Installing RAC database software - Preparing RAC environment |
| High Availability Concepts | - Failover mechanisms - RAC recovery scenarios |
| Cluster and Database Administration | - Backup and recovery in RAC - Managing RAC instances - Services configuration and management |
| Performance and Tuning | - Load balancing and failover - Troubleshooting performance issues - Monitoring RAC performance |
| Oracle RAC Architecture | - Cache Fusion and interconnect communication - Cluster fundamentals and components - Shared storage concepts |
Oracle Database 10g R2: Administering RAC Sample Questions:
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 both the nodes
- C. by using the oracleasm configure command on any of the nodes
- D. by using Oracle Universal Installer (OUI) on any one of the nodes
- E. by using Database Configuration Assistant (DBCA) on any one of the nodes
- F. by using the ASMCMD command-line utility on both the nodes
Correct Answer: D,E 🗳️
View the Exhibit.
You are asked to help a colleague to logically remove node NLEDUC2 from a RAC cluster
installation.
On observing the colleague's terminal, you notice the output as seen in the exhibit. Based on this,
which five additional steps would you recommend? Do not be concerned with the correct
sequence for the steps.
(Choose five.)
- A. Check that the database and ASM instances are all terminated on NLEDUC2.
- B. Remove the node from the clusterware.
- C. Check that the software has been removed from the database and ASM homes on NLEDUC2.
- D. Stop and restart the clusterware on NLEDUC1.
- E. Remove the listener from NLEDUC2.
- F. Check that the ONS configuration has been updated on the remaining node.
- G. Check that the node has been removed from the database and ASM inventories.
- H. Stop and restart the nodeapps on NLEDUC1.
Correct Answer: A,B,C,F,G 🗳️
After migrating from a 10g R1 cluster to 10g R2, you decide to multiplex your voting disk. Which are the two ways in which you can accomplish this task? (Choose two.)
- A. You may use the VIPCA utility to add new voting disks.
- B. You may use the command:
crsctl add ess votedisk <new voting disk path> - C. You should not use symbolic links.
- D. You must add additional voting disks offline.
- E. You can add additional voting disks online.
Correct Answer: B,E 🗳️
Which four statements contain accurate information regarding RAC VIPs and application VIPs? (Choose four.)
- A. It is not recommended to share an application VIP among several applications.
- B. A failed over application VIP does accept new connections.
- C. A RAC VIP fails over if the listener fails.
- D. A failed over RAC VIP does accept new connections.
- E. An application VIP fails over if the associated application fails over.
- F. It is recommended to share a RAC VIP among several database instances.
- G. It is not recommended to share a RAC VIP among several database instances.
- H. It is recommended to share application VIPs among multiple applications.
Correct Answer: A,B,E,F 🗳️
You are asked by the DBA team leader to consolidate three different Oracle databases, which supported three separate workloads, into one large three-instance RAC database on a three-node cluster. You also need to create a separate service to represent each workload type and support client-side load balancing. The CRM service has two preferred instances, the HR service has two, and the ORDERS service
has only one. Any instance may be used as an vailable instance for any service that is not
specified as a preferred service for that same instance. You decide to create three separate
entries in TNSNAMES.ORA.
Choose three options describing the number of entries you would have in each address list.
(Choose three.)
- A. three entries in the address list for the ORDERS service pointing to the listeners on all three nodes
- B. two entries for the address list for the HR service for the listeners on the nodes containing the preferred instances for HR
- C. three entries in the address list for the CRM service for the listeners on all three nodes
- D. three entries in the address list for the HR service for the listeners on all three nodes
- E. two entries for the address list for the CRM service pointing to the listeners on the nodes containing the preferred instances for CRM
- F. one entry for the address list for the ORDERS service for the listeners on the nodes containing the preferred instance for ORDERS
Correct Answer: A,C,D 🗳️
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