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Oracle 1Z0-048 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Oracle Real Application Clusters Architecture | - Clusterware components and architecture - RAC instance architecture and Cache Fusion |
| Topic 2: Administration and Maintenance | - Service management and workload balancing - Node management and cluster administration |
| Topic 3: Performance and Troubleshooting | - Diagnosing RAC interconnect and cache fusion issues - RAC performance tuning and monitoring |
| Topic 4: Storage Management | - Shared storage configuration and best practices - Automatic Storage Management (ASM) in RAC |
| Topic 5: Installation and Configuration | - Oracle Clusterware installation and setup - RAC database creation and configuration |
| Topic 6: High Availability and Recovery | - Failover and recovery mechanisms in RAC - Backup and recovery strategies in clustered environments |
Oracle Database 10g R2: Administering RAC Sample Questions:
Which three statements regarding backup of the voting disk are true? (Choose three.)
- A. A backup of the voting disk should be taken whenever an RMAN catalog reset is done.
- B. A backup of the voting disk should be taken whenever an existing node is removed from the cluster.
- C. On UNIX platforms, the voting disk can be backed up with the dd command.
- D. Whenever a voting disk backup is made, the Clusterware software should be stopped on all nodes in the cluster.
- E. A backup of the voting disk should be taken whenever a new node is added to the cluster.
Correct Answer: B,C,E 🗳️
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 🗳️
For which two server metrics can you define thresholds for your services? (Choose two.)
- A. PHYSICAL_READ_PER_CALL
- B. APPLICATION_WAIT_TIME
- C. ELAPSED_TIME_PER_CALL
- D. SQL EXECUTE ELAPSED TIME
- E. CPU_TIME_PER_CALL
- F. LOGICAL_READ_PER_CALL
Correct Answer: C,E 🗳️
After a power failure, you noticed that one of your cluster database instances did not start automatically, whereas all other instances came up successfully. What would you do to determine the precise cause for the instance startup failure? (Choose three.)
- A. Enable extra debugging in the Oracle Clusterware software by using the CRSCTL command.
- B. Check the alert.log file that belongs to the Oracle Clusterware software.
- C. Check the resource state by using the CRS_STAT command.
- D. Check if the Oracle Clusterware is functional by using the CRSCTL command.
- E. Check the alert.log file that belongs to the instance that did not start.
- F. Reboot the node where the failing instance resides to check if the problem is persistent.
- G. Check for OCR corruptions by using the OCRCHECK command.
Correct Answer: B,C,E 🗳️
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 ADDM report output reveals a "hot block" condition.
- C. The SQL statement with the ID dqsu2hwys8rcf was executed 40000 times
- D. The Findings Path section indicates that the Cluster wait class is consuming a significant proportion of the database time.
Correct Answer: A,C,D 🗳️
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