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Oracle 1Z0-048 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Cluster and Database Administration | - Services configuration and management - Backup and recovery in RAC - Managing RAC instances |
| Oracle RAC Architecture | - Shared storage concepts - Cluster fundamentals and components - Cache Fusion and interconnect communication |
| High Availability Concepts | - Failover mechanisms - RAC recovery scenarios |
| Installation and Configuration | - Installing Oracle Clusterware - Preparing RAC environment - Installing RAC database software |
| Performance and Tuning | - Troubleshooting performance issues - Load balancing and failover - Monitoring RAC performance |
Oracle Database 10g R2: Administering RAC Sample Questions:
You are the administrator of a Linux-based Oracle cluster. To meet your company's disaster recovery requirements, you have to make backups of the OCR to a tape device. What are your options? (Choose all that apply.)
- A. Use your favorite tape backup command to back up the OCR from disk to tape.
- B. Use the OCRCONFIG command to have CRSD write the OCR backup to tape for you.
- C. Use your favorite tape backup command to back up the physical OCR backups from disk to tape.
- D. Use the Linux DD command to write the OCR directly to tape.
- E. Use RMAN to back up the OCR from disk to tape.
Correct Answer: C 🗳️
You are running a two-instance database with six redo log groups defined and decide to add a third thread to support a third database instance on the third node of the cluster. Which three commands would you issue to achieve this using command line administration? (Choose three.)
- A. ALTER SYSTEM ADD LOGFILE THREAD 3 GROUP 7;
- B. ALTER DATABASE ENABLE THREAD 3;
- C. ALTER SYSTEM ADD LOGFILE THREAD 3 GROUP 8;
- D. ALTER DATABASE ADD LOGFILE THREAD 3 GROUP 8;
- E. ALTER SYSTEM ENABLE THREAD 3;
- F. ALTER DATABASE ADD LOGFILE THREAD 3 GROUP 7;
Correct Answer: B,D,F 🗳️
The following are the steps that you have taken so far in a two-node RAC implementation:
1) Completed the preinstallation tasks
2) Performed Oracle Clusterware installation
View the Exhibit and examine the current status of a list of resources on each node.
Your next step is to install the Oracle Database 10g software on these nodes. Which statement is
true about running Oracle Universal Installer (OUI) and installing the software in this situation?
- A. You run OUI from any node and the software would be installed on both the nodes successfully.
- B. You must run OUI from the first node ora....17a because running it from the second node ora....17b would result in an error.
- C. You run OUI from any node and the installer would prompt you to run the crs_start command to start the resources that are offline.
Correct Answer: A 🗳️
After the cluster database has been successfully created, several postinstallation tasks should be completed. Identify three of them. (Choose three.)
- A. Verify the Enterprise Manager/Oracle Cluster Registry configuration by running srvctl config database -d db_name.
- B. Back up the root.sh script.
- C. Initialize the cluster backup procedure.
- D. Set up additional required user accounts.
- E. Create the ASM instance.
Correct Answer: A,B,D 🗳️
Your company requires that certain database systems be made continuously available because there are revenue-earning applications using Oracle databases. You already use RAC; it is a requirement for the applications to have continuous read and write access to all schema objects in the database during routine DBA maintenance activities. Which three technologies would you recommend for minimizing planned downtime for the application caused by unavailability of data due to those activities? (Choose three.)
- A. Fast Start Fault Recovery
- B. Online Index Rebuild
- C. Bigfile Tablespaces
- D. Online Table Redefinition
- E. Rolling Release Upgrades
- F. Hardware-Assisted Resilient Data
Correct Answer: B,D,E 🗳️
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