Exam Name: Oracle Database 10g R2: Administering RAC
Certification Provider: Oracle
Corresponding Certification: Other Oracle Certification
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- Total Questions: 150
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The Oracle Database 10g R2: Administering RAC has a reputation for catching unprepared candidates off guard, and the 1Z0-048 is no exception in 2026. Rather than guessing what the exam will feel like, work through the 150 practice questions at 2Pass4sure and walk in knowing what to expect.
Oracle 1Z0-048 Exam Overview:
| Certification Vendor: | Oracle |
|---|---|
| Exam Name: | Oracle Database 10g R2: Administering RAC (Real Application Clusters) |
| Exam Number: | 1Z0-048 |
| Passing Score: | 66% |
| Exam Price: | USD 245 |
| Certificate Validity Period: | Non-expiring (legacy Oracle certification policy for 10g-era exams) |
| Exam Format: | Multiple Response, Multiple Choice |
| Real Exam Qty: | 64 |
| Exam Duration: | 120 minutes |
| Related Certifications: | Oracle Database 10g RAC Specialist Oracle Database 10g Administrator Certified Professional (OCP) |
| Available Languages: | English |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Proctored exam delivered at authorized test centers (Pearson VUE / Oracle Testing Centers) |
| Pre Condition: | Recommended: Oracle Database 10g Administrator Certified Professional (OCP) or equivalent Oracle DBA experience |
| Official Syllabus URL: | https://education.oracle.com/ |
Oracle 1Z0-048 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Storage Management | - Automatic Storage Management (ASM) in RAC - Shared storage configuration and best practices |
| Oracle Real Application Clusters Architecture | - Clusterware components and architecture - RAC instance architecture and Cache Fusion |
| Performance and Troubleshooting | - RAC performance tuning and monitoring - Diagnosing RAC interconnect and cache fusion issues |
| Installation and Configuration | - Oracle Clusterware installation and setup - RAC database creation and configuration |
| Administration and Maintenance | - Node management and cluster administration - Service management and workload balancing |
| High Availability and Recovery | - Backup and recovery strategies in clustered environments - Failover and recovery mechanisms in RAC |
1Z0-048 Exam FAQ: What Candidates Ask Most
The Oracle Database 10g R2: Administering RAC (exam code 1Z0-048) is the exam you pass to earn the Other Oracle Certification certification, a credential at the Professional level. It is also connected with related credentials such as Oracle Database 10g Administrator Certified Professional (OCP), Oracle Database 10g RAC Specialist. If you are mapping out a certification path with Oracle, this exam is a milestone worth planning around.
The 1Z0-048 exam includes 64 questions, and you have 120 minutes to complete them. With that many questions on the clock, pacing is part of the challenge: divide your time into rough blocks as you go, and flag the items that stall you so you can circle back at the end instead of burning minutes on a single question. A week or two before your exam date, sit at least one full timed session in the 2Pass4sure test engine under the same time limit, so the pace feels familiar rather than frantic on the day.
You need 66% to pass the 1Z0-048 exam, and the official registration fee is USD 245. That fee is due again in full for every retake, which makes thorough preparation the cheaper investment by far. Before you book your seat, test yourself with the 2Pass4sure practice questions until you are scoring comfortably above the passing mark on a consistent basis — it is the simplest way to avoid paying for the same exam twice.
Recommended: Oracle Database 10g Administrator Certified Professional (OCP) or equivalent Oracle DBA experience
Eligibility rules can be adjusted by Oracle over time, so before you register, confirm the current requirements on the official exam page: view the official 1Z0-048 exam information.
Yes. 2Pass4sure offers a free PDF demo of the 1Z0-048 practice questions, so you can judge the quality of the material firsthand before paying anything. Every purchase also includes 365 days of free updates — if Oracle changes the exam during that year, your material changes with it. And when the free update period expires, you can extend it at a 50% discount from within your member zone.
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The official Oracle Database 10g R2: Administering RAC outline divides the exam content into 6 main domains. The first three are:
- Installation and Configuration
- Oracle Real Application Clusters Architecture
- Performance and Troubleshooting
That is only the headline view — scroll back up to the Exam Topics section on this page for the complete domain-by-domain breakdown before you plan your study schedule.
Oracle Database 10g R2: Administering RAC Sample Questions:
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 8;
- B. ALTER SYSTEM ENABLE THREAD 3;
- C. ALTER DATABASE ADD LOGFILE THREAD 3 GROUP 7;
- D. ALTER SYSTEM ADD LOGFILE THREAD 3 GROUP 7;
- E. ALTER DATABASE ENABLE THREAD 3;
- F. ALTER DATABASE ADD LOGFILE THREAD 3 GROUP 8;
Correct Answer: C,E,F 🗳️
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 must add additional voting disks offline.
- B. You may use the VIPCA utility to add new voting disks.
- C. You may use the command:
crsctl add ess votedisk <new voting disk path> - D. You should not use symbolic links.
- E. You can add additional voting disks online.
Correct Answer: C,E 🗳️
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 RMAN to back up the OCR from disk to tape.
- B. Use your favorite tape backup command to back up the OCR from disk to tape.
- C. Use your favorite tape backup command to back up the physical OCR backups from disk to tape.
- D. Use the OCRCONFIG command to have CRSD write the OCR backup to tape for you.
- E. Use the Linux DD command to write the OCR directly to tape.
Correct Answer: C 🗳️
You are asked to justify your proposed Maximum Availability Architecture to the IT director who feels that a four-node RAC cluster on the primary should not require a four-node RAC cluster for a physical standby database. The director suggests that either a non-RAC database should be used on the standby or that at most a two-node cluster is all that is required. Your proposed architecture was designed for both planned and unplanned downtime and for performance and scalability of services for all eventualities. How would you justify your proposal? (Choose two.)
- A. A non-RAC physical standby would not provide for high availability in the case of a lights out failover to the standby.
- B. The four-node physical standby database provides for continuous availability of services but the two-node RAC physical standby database does not.
- C. The four-node physical standby provides for the same service preferences and performance profile in case of a failover to the physical standby database.
- D. Asymmetric configurations prevent the standby from issuing a FLASHBACK DATABASE command if required after a failover.
- E. A two-node physical standby would not allow as many services to be supported as a four-node physical standby does in case of a failover to the physical standby.
Correct Answer: A,C 🗳️
Which two statements are true in a RAC environment? (Choose two.)
- A. When using SRVCTL to create a service, you do not need to add the corresponding TNS entry in your tnsnames.ora.
- B. When using DBCA to create a service, you do not need to add the corresponding TNS entry in your tnsnames.ora on the cluster nodes.
- C. After you create a service using Database Configuration Assistant (DBCA), you need to start it with a separate command.
- D. After you create a service using SRVCTL, you need to start it with a separate command.
- E. After you create a service, you need to enable it for CRS to manage it.
Correct Answer: B,D 🗳️
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