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Oracle 1Z0-048 Exam Overview:
| Certification Vendor: | Oracle |
|---|---|
| Exam Name: | Oracle Database 10g R2: Administering RAC |
| Exam Number: | 1Z0-048 |
| Available Languages: | English |
| Exam Duration: | 120 minutes |
| Exam Format: | Single Answer, Multiple Answer, Multiple Choice |
| Exam Price: | $245 USD |
| Certificate Validity Period: | Lifetime |
| Passing Score: | 64% |
| Related Certifications: | Oracle Database Administrator Certified Professional |
| Real Exam Qty: | 75 |
| Recommended Training: | Oracle Database 10g R2: Implement RAC |
| Exam Registration: | Pearson VUE Registration Oracle Certification Portal |
| Sample Questions: |  |
| Exam Way: | Proctored at Pearson VUE test centers |
| Pre Condition: | Oracle Database 10g Administrator Certified Professional or equivalent experience |
| Official Syllabus URL: | https://education.oracle.com/ |
Oracle 1Z0-048 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Monitoring and Performance Tuning | 10% | - Monitoring RAC environment - Resolving common performance issues |
| Oracle RAC Installation and Database Creation | 20% | - Preparing for RAC installation - Creating RAC databases with DBCA - Installing Oracle RAC software |
| RAC Database and Instance Administration | 20% | - Managing services and workloads - Using SRVCTL and Enterprise Manager - Starting and stopping RAC components |
| Automatic Storage Management (ASM) for RAC | 15% | - Managing ASM instances and disk groups - Installing and configuring ASM |
| Backup and Recovery in RAC Environment | 15% | - Configuring RMAN for RAC - Performing backup and recovery operations |
| Oracle Clusterware Installation and Configuration | 20% | - Installing and configuring Clusterware - Managing Clusterware components - Pre-installation tasks and requirements |
Oracle Database 10g R2: Administering RAC Exam FAQ — Valid Answers
The Oracle Database 10g R2: Administering RAC blueprint spans 6 domains — including Oracle Clusterware Installation and Configuration (20%), Monitoring and Performance Tuning (10%), Oracle RAC Installation and Database Creation (20%). Spend your hours where the percentages are; the full outline above lists every subtopic.
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The Oracle Database 10g R2: Administering RAC is Oracle's official exam for the Oracle Certified Expert, Oracle Database 10g R2: Real Application Clusters Administrator certification, at the Expert level. It validates practical, job-relevant skills — which is why employers shortlist certified candidates. Related credentials include Oracle Database Administrator Certified Professional.
Oracle Database 10g R2: Administering RAC Sample Questions:
You are creating a database in your RAC implementation. You are using the DBCA to create the database, and you selected the Raw Devices Mapping file on one of the screens of the DBCA. What is the reason for selecting this file?
- A. You want to provide the DBCA with a list of all the storage devices that are currently bound to a raw interface.
- B. You want to set the appropriate raw partition for each database file.
- C. You want the DBCA to bind the partitions to raw devices.
- D. You want to configure an ASM diskgroup containing raw devices.
Correct Answer: B 🗳️
Which CREATE SEQUENCE option is the most scalable?
- A. CACHE ORDER
- B. CACHE NOORDER
- C. NOCACHE ORDER
- D. NOCACHE NOORDER
Correct Answer: B 🗳️
Which four statements contain accurate information regarding RAC VIPs and application VIPs? (Choose four.)
- A. It is not recommended to share an application VIP among several applications.
- B. It is recommended to share a RAC VIP among several database instances.
- C. A failed over application VIP does accept new connections.
- D. An application VIP fails over if the associated application fails over.
- E. It is recommended to share application VIPs among multiple applications.
- F. A failed over RAC VIP does accept new connections.
- G. A RAC VIP fails over if the listener fails.
- H. It is not recommended to share a RAC VIP among several database instances.
Correct Answer: A,B,C,D 🗳️
The infrastructure team at your company requires your advice on maximizing availability using Maximum Availability Architecture and any other features that will help reduce planned downtime both for database instances and for the availability of database objects which applications depend on. You are already running a four node RAC cluster to protect against instance and node failures. Which four would you recommend if they are not already implemented? (Choose four.)
- A. use of the DBMS_REDEFINITION package
- B. a physical standby database for rolling upgrades
- C. use of segment shrinking to reorganize space in tables and indexes
- D. use of freelists to manage space in table and index segments
- E. use of online index rebuild
- F. use of ASM
Correct Answer: A,C,E,F 🗳️
View the Exhibit.
You are required to support your Oracle RAC configuration using ASM and RAID technology. You plan to discuss the storage configuration with the storage technology team. They have proposed a configuration as shown in the exhibit with a separate set of LUNs for the data disk group and the flash recovery area disk group and a 500 KB stripe size in line with other non-Oracle LUNs. The Data disk group has four250G LUNs and the FRA disk group has four500G LUNS, both of which are mirrored.
- A. Index Range Scans would cause I/O to many different physical disks.
- B. I/O to the flash recovery area disk group for backups may cause performance issues when full table scans are occurring during batch workloads.
- C. Retention policies that require backups to be kept for long time periods may cause wasted space due to large allocation units.
- D. The LUNs are not aligned with ASM Allocation Units, which may lead to I/O bottlenecks.
Correct Answer: B,C,D 🗳️
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