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 and Recovery | - Backup and recovery strategies in clustered environments - Failover and recovery mechanisms in RAC |
| Performance and Troubleshooting | - Diagnosing RAC interconnect and cache fusion issues - RAC performance tuning and monitoring |
| Installation and Configuration | - RAC database creation and configuration - Oracle Clusterware installation and setup |
| Oracle Real Application Clusters Architecture | - RAC instance architecture and Cache Fusion - Clusterware components and architecture |
| Administration and Maintenance | - Service management and workload balancing - Node management and cluster administration |
| Storage Management | - Automatic Storage Management (ASM) in RAC - Shared storage configuration and best practices |
Oracle Database 10g R2: Administering RAC Sample Questions:
You are considering issues involving backup and recovery of the voting disk. Select four correct statements. (Choose four.)
- A. You can determine the voting disks currently used by CSS with the command crsctl query ess votedisk.
- B. Backup can be performed online.
- C. If you lose your voting disk and do not have a backup, you must reinstall Oracle Clusterware.
- D. To back up the voting disk, use the command ocrconfig -export.
- E. Use symbolic links to simplify recovery of the voting disk.
Correct Answer: B,C,E 🗳️
What should you do when creating a disk group that would store your RAC database?
- A. Make sure that ASM targets are accessible from Database Control.
- B. Make sure that all database instances are running in restricted mode.
- C. Make sure that all database instances are functional.
- D. Make sure that the disk group is mounted by all ASM instances.
Correct Answer: D 🗳️
You have attended a user group presentation on RAC and based on what you have learned you feel that your company would benefit from having the RAC option to meet its Oracle database requirements in several ways. Your manager does not know much about RAC and asks you to create a presentation to the team explaining RAC, and whether it should be implemented in your installation. Which three statements explain the benefits and implications of RAC? (Choose three.)
- A. RAC would increase availability in the event of a network failure.
- B. RAC used in conjunction with parallel execution may provide for speedup of OLTP workload processes.
- C. RAC alone would not help protect from human errors.
- D. RAC would increase scalability for all application workloads in all cases.
- E. RAC would increase availability in the event of node and instance failures.
- F. RAC used in conjunction with parallel execution may provide speedup of DSS queries.
- G. RAC alone would increase availability when doing release upgrades.
- H. RAC would increase availability in the event of data failures.
Correct Answer: C,E,F 🗳️
In a RAC environment, you see a steep increase for enq:HW- contention and gc current grant wait events. What would you do to fix this issue?
- A. Reduce the number of updates causing locks on tables accessed by multiple instances.
- B. Reduce the time of transactions by committing more often.
- C. Increase the cache size of sequences.
- D. Use larger uniform extent sizes for objects.
Correct Answer: D 🗳️
View the Exhibit and examine an installation step of Oracle Enterprise Manager Grid Control 10gR2 to manage your RAC installation. You entered the host name but you are not sure about the port number. Thefollowing is the list of port numbers from the host ed-otraclin17b.us.oracle.com:
- A. 1158
- B. 4889
- C. 5561
- D. 3938
- E. 1521
Correct Answer: E 🗳️
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