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Exam Code: 1Z0-048
Exam Name: Oracle Database 10g R2: Administering RAC
Certification Provider: Oracle
Corresponding Certification: Other Oracle Certification
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 |
|---|---|
| Topic 1: High Availability Concepts | - RAC recovery scenarios - Failover mechanisms |
| Topic 2: Installation and Configuration | - Preparing RAC environment - Installing Oracle Clusterware - Installing RAC database software |
| Topic 3: Oracle RAC Architecture | - Cache Fusion and interconnect communication - Shared storage concepts - Cluster fundamentals and components |
| Topic 4: Performance and Tuning | - Load balancing and failover - Troubleshooting performance issues - Monitoring RAC performance |
| Topic 5: Cluster and Database Administration | - Services configuration and management - Backup and recovery in RAC - Managing RAC instances |
Oracle Database 10g R2: Administering RAC Sample Questions:
James works as a senior DBA for a finance company. He plans to implement a test RAC
environment. As per his plan, a three-node RAC would be implemented on a Windows platform,
with the following points related to the storage of files:
1) A single Oracle home would be shared by all the nodes.
2) The data files will extend automatically because the autoextend feature will be enabled.
3) The Oracle binaries and all the database files would be stored in a single file system.
4) The hardware RAID is used to support high availability.
These are the some of the storage options available for RAC implementation:
Option 1:Use OCFS with ASM Option 2:Use ASM and not OCFS Option 3:Use OCFS and not ASM Option 4:Use neither OCFS, nor ASM
Which storage option would you suggest for this plan?
- A. Option 2
- B. Option 4
- C. either Option 2 or Option 4
- D. either Option 1 or Option 2
- E. Option 1
- F. Option 3
Correct Answer: F 🗳️
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. There are partitioned tables where the older partitions are in read-only tablespaces and seldom accessed, but the more recent partitions are frequently accessed.
- B. The disk farm has different disk models with different characteristics and ages.
- C. There are large nonpartitioned tables accessed frequently using indexes.
- D. Applications using the databases have different Service-Level Agreements for response time and throughput.
- E. Some database instances are shut down every night while others are always running.
- F. Some databases operate in ARCHIVELOGMODE and others in NOARCHIVELOGMODE.
- G. The retention policy for backups are different for different databases.
Correct Answer: A,B,D 🗳️
Read the following statements about the ASM and OCFS file systems:
1) t is compatible with Oracle 9i and Oracle 10g.
2) t is one of the solutions for managing Oracle binaries in a RAC environment.
3) t relies on storage hardware or host-based RAID functionality to support high availability.
4) t is a shared storage file system designed to eliminate the need for raw partitions to store
certain files.
5) t is has integrated volume management with superior extent-based striping and mirroring.
6) t is a cluster file system with a volume manager built into the Oracle 10g kernel to manage
Oracle database files.
Identify the correct grouping where Group A represents true statements about ASM and Group B
represents true statements about OCFS.
- A. Group A: 5 6 Group B: 1 2,3,4
- B. 1 5,6
- C. 3 4 Group
- D. Group
- E. 2 3,4 Group
- F. 1 2,5,6
- G. Group
- H. Group
- I. 1 3,4 Group B: 3 4,5
Correct Answer: A,B 🗳️
You are asked by the DBA team leader to consolidate three different Oracle databases, which supported three separate workloads, into one large three-instance RAC database on a three-node cluster. You also need to create a separate service to represent each workload type and support client-side load balancing. The CRM service has two preferred instances, the HR service has two, and the ORDERS service
has only one. Any instance may be used as an vailable instance for any service that is not
specified as a preferred service for that same instance. You decide to create three separate
entries in TNSNAMES.ORA.
Choose three options describing the number of entries you would have in each address list.
(Choose three.)
- A. three entries in the address list for the ORDERS service pointing to the listeners on all three nodes
- B. three entries in the address list for the CRM service for the listeners on all three nodes
- C. three entries in the address list for the HR service for the listeners on all three nodes
- D. two entries for the address list for the HR service for the listeners on the nodes containing the preferred instances for HR
- E. one entry for the address list for the ORDERS service for the listeners on the nodes containing the preferred instance for ORDERS
- F. two entries for the address list for the CRM service pointing to the listeners on the nodes containing the preferred instances for CRM
Correct Answer: A,B,C 🗳️
View the Exhibit and examine a database software installation step in a RAC environment.
Which statement about the path is true?
- A. You must specify the location of Oracle inventory.
- B. You should specify the same path that you specified for the ORACLE_BASE environment variable.
- C. You must specify the same path where Oracle clusterware is installed.
- D. You must specify the same path that you specified to install ASM.
- E. You must specify the location of the OCR file.
- F. You should specify a path under ORACLE_BASE where Oracle product is to be installed.
Correct Answer: F 🗳️
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