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Oracle 1Z0-048 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: RAC Database and Instance Administration | 20% | - Using SRVCTL and Enterprise Manager - Starting and stopping RAC components - Managing services and workloads |
| Topic 2: Automatic Storage Management (ASM) for RAC | 15% | - Installing and configuring ASM - Managing ASM instances and disk groups |
| Topic 3: Monitoring and Performance Tuning | 10% | - Resolving common performance issues - Monitoring RAC environment |
| Topic 4: Oracle RAC Installation and Database Creation | 20% | - Creating RAC databases with DBCA - Installing Oracle RAC software - Preparing for RAC installation |
| Topic 5: Backup and Recovery in RAC Environment | 15% | - Configuring RMAN for RAC - Performing backup and recovery operations |
| Topic 6: Oracle Clusterware Installation and Configuration | 20% | - Installing and configuring Clusterware - Managing Clusterware components - Pre-installation tasks and requirements |
Oracle Database 10g R2: Administering RAC Sample Questions:
Oracle Cluster Registry (OCR) can be recovered on a UNIX platform using which two commands? (Choose two.)
- A. ocrconfig -restore /app/oracle/product/10.1.0/crs_1/cdata/dbclust01/day. ocr where day. ocr is an automatically generated OCR backup
- B. ocrconfig -import /u01/logical_ocr/yesterday.ocr where yesterday.ocr is an automatically generated OCR backup
- C. ocrconfig -import /u01/logical_ocr/yesterday.ocr_exp where yesterday. ocr_exp is a logical backup created using the ocrconfig -export command
- D. cp /app/oracle/product/10.1.0/crs_1/cdata/dbclust01/day. ocr/ocfs/OCR/crs. dbf where /ocfs/OCR/crs. dbf is the cluster registry file
Correct Answer: A,C 🗳️
You are working with Oracle Support to investigate to what extent a disk subsystem corruption has affected your Oracle cluster configuration. The support engineer wants you to run the OCRCHECK command and read out the output. What is the effect of running the OCRCHECK command?
- A. t performs an OCR integrity check.
- B. t checks whether all your cluster resources, such as databases, instances, listeners, and node applications, are registered within the OCR.
- C. t checks whether the Oracle Cluster Registry daemons are running normally.
- D. t checks whether there is enough disk space for the OCR.
- E. t checks whether the OCR daemons are making regular backups of the OCR.
Correct Answer: A 🗳️
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 must add additional voting disks offline.
- C. You can add additional voting disks online.
- D. You may use the command:
crsctl add ess votedisk <new voting disk path> - E. You should not use symbolic links.
Correct Answer: C,D 🗳️
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. To back up the voting disk, use the command ocrconfig -export.
- D. If you lose your voting disk and do not have a backup, you must reinstall Oracle Clusterware.
- E. Use symbolic links to simplify recovery of the voting disk.
Correct Answer: B,D,E 🗳️
Your company has certain standard practices for technology and you are configuring ASM disk groups for your four-node RAC cluster. The company guidelines suggest that there is one disk group for the flash recovery area that is shared by all databases and a separate disk group for the database area of all databases. Which three exceptions exist that may require you to create additional disk groups? (Choose three.)
- A. Some databases operate in ARCHIVELOGMODE and others in NOARCHIVELOGMODE.
- B. The disk farm has different disk models with different characteristics and ages.
- C. There are partitioned tables where the older partitions are in read-only tablespaces and seldom accessed, but the more recent partitions are frequently accessed.
- D. Some database instances are shut down every night while others are always running.
- E. The retention policy for backups are different for different databases.
- F. There are large nonpartitioned tables accessed frequently using indexes.
- G. Applications using the databases have different Service-Level Agreements for response time and throughput.
Correct Answer: B,C,G 🗳️
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