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 |
|---|---|
| High Availability Concepts | - RAC recovery scenarios - Failover mechanisms |
| Performance and Tuning | - Monitoring RAC performance - Troubleshooting performance issues - Load balancing and failover |
| Oracle RAC Architecture | - Cluster fundamentals and components - Shared storage concepts - Cache Fusion and interconnect communication |
| Installation and Configuration | - Preparing RAC environment - Installing Oracle Clusterware - Installing RAC database software |
| Cluster and Database Administration | - Backup and recovery in RAC - Managing RAC instances - Services configuration and management |
Oracle Database 10g R2: Administering RAC Sample Questions:
Because of the increasing load on your Oracle Database 10g Release 2 cluster, your company has decided to add one extra node to your existing four-node cluster. To prevent errors during this process, you want to make use of the Cluster Verification Utility (CLUVFY) so that you can check if you meet all requirements before you execute each step in this node-adding process. From where can you run CLUVFY?
- A. only after downloading it from the Oracle Technology Network (OTN) Web site
- B. only from a non-Oracle Clusterware ORACLEJHOME
- C. only from the Oracle Clusterware ORACLEJHOME
- D. only from the Oracle Clusterware distribution media
- E. from the Oracle Clusterware distribution media, any available RAC and/or CRS ORACLEJHOME on your cluster, and from the location where you downloaded it from in the Oracle Technology Network (OTN) Web site
- F. from the Oracle Clusterware distribution media, any ORACLEJHOME on the node from which you installed the first four nodes, and from the location where you downloaded it from in the Oracle Technology Network (OTN) Web site
- G. from both the Oracle Clusterware distribution media and the Oracle Clusterware ORACLEJHOME
Correct Answer: E 🗳️
You are creating a database in your RAC implementation. You are using the DBCA to create the database, and you selected the Raw Devices Mapping file on one of the screens of the DBCA. What is the reason for selecting this file?
- A. You want to provide the DBCA with a list of all the storage devices that are currently bound to a raw interface.
- B. You want to set the appropriate raw partition for each database file.
- C. You want to configure an ASM diskgroup containing raw devices.
- D. You want the DBCA to bind the partitions to raw devices.
Correct Answer: B 🗳️
View the Exhibit, which displays a portion of an ADDM report from a RAC database. Which three statements are true? (Choose three.)
- A. A LOCK TABLE statement is causing excessive inter-instance messaging.
- B. The Findings Path section indicates that the Cluster wait class is consuming a significant proportion of the database time.
- C. The ADDM report output reveals a "hot block" condition.
- D. The SQL statement with the ID dqsu2hwys8rcf was executed 40000 times
Correct Answer: A,B,D 🗳️
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. I/O to the flash recovery area disk group for backups may cause performance issues when full table scans are occurring during batch workloads.
- 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. Retention policies that require backups to be kept for long time periods may cause wasted space due to large allocation units.
Correct Answer: A,C,D 🗳️
You decide to change the redo thread of one of your database instances.
Now you have only two threads: thread 1 is currently being used by instance RAC01, and thread 2 is currently being used by instance RAC02.
In which three orders could you perform the following commands to add thread 3 to your
database, and ensure that instance RAC01 is using thread 3? (Choose three acceptable orders.
1 srvctl stop instance -d RACDB -i RAC01
2 ALTER DATABASE ENABLE THREAD 3;
3 ALTER DATABASE ADD LOGFILE THREAD 3 GROUP 6;
4 srvctl start instance -d RACDB -i RAC01
5 ALTER SYSTEM SETthread=3 SCOPE=SPFILE SID='RAC01';
6 ALTER DATABASE ADD LOGFILE THREAD 3 GROUP 5;
- A. 2,6,3, 5,1
- B. 6,3,5, 2,1
- C. 6,3,2, 5,1
- D. 2,5,1, 4,6
- E. 2,5,1, 4,3
- F. 3,6,5, 2,1
Correct Answer: B,C,F 🗳️
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