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Updated: Jul 28, 2026
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Oracle 1Z0-048 Exam Overview:
| Certification Vendor: | Oracle |
| Exam Name: | Oracle Database 10g R2: Administering RAC (Real Application Clusters) |
| Exam Number: | 1Z0-048 |
| Exam Format: | Multiple Choice, Multiple Response |
| Passing Score: | 66% |
| Exam Duration: | 120 minutes |
| Related Certifications: | Oracle Database 10g Administrator Certified Professional (OCP) Oracle Database 10g RAC Specialist |
| Available Languages: | English |
| Exam Price: | USD 245 |
| Certificate Validity Period: | Non-expiring (legacy Oracle certification policy for 10g-era exams) |
| Real Exam Qty: | 64 |
| Sample Questions: | Oracle 1Z0-048 Sample Questions |
| 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 |
|---|---|
| Oracle Real Application Clusters Architecture | - Clusterware components and architecture - RAC instance architecture and Cache Fusion |
| Administration and Maintenance | - Node management and cluster administration - Service management and workload balancing |
| Installation and Configuration | - RAC database creation and configuration - Oracle Clusterware installation and setup |
| Storage Management | - Automatic Storage Management (ASM) in RAC - Shared storage configuration and best practices |
| Performance and Troubleshooting | - RAC performance tuning and monitoring - Diagnosing RAC interconnect and cache fusion issues |
| High Availability and Recovery | - Backup and recovery strategies in clustered environments - Failover and recovery mechanisms in RAC |
Oracle Database 10g R2: Administering RAC Sample Questions:
1. Which three statements about deleting instances from a RAC database on a UNIX platform are true? (Choose three.)
A) To delete an instance, start the DBCA on the node that hosts the instance that you want to delete.
B) During a delete operation, the DBCA removes the instance and the instance Oracle Net configurationDuring a delete operation, the DBCA removes the instance and the instance? Oracle Net configuration.
C) The DBCA can be used to delete an instance from a RAC database.
D) To delete an instance, start the DBCA on a node other than the node that hosts the instance that you want to delete.
2. 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 the OCRCONFIG command to have CRSD write the OCR backup to tape for you.
C) Use your favorite tape backup command to back up the physical OCR backups from disk to tape.
D) Use the Linux DD command to write the OCR directly to tape.
E) Use your favorite tape backup command to back up the OCR from disk to tape.
3. Oracle Cluster Registry (OCR) can be recovered on a UNIX platform using which two commands? (Choose two.)
A) 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
B) ocrconfig -restore /app/oracle/product/10.1.0/crs_1/cdata/dbclust01/day. ocr where day. ocr is an automatically generated OCR backup
C) ocrconfig -import /u01/logical_ocr/yesterday.ocr where yesterday.ocr is an automatically generated OCR backup
D) ocrconfig -import /u01/logical_ocr/yesterday.ocr_exp where yesterday. ocr_exp is a logical backup created using the ocrconfig -export command
4. To complete a cluster database creation, the DBA must choose the cluster database storage method. Which storage choice is not correct? (Choose the incorrect one.)
A) Standard UNIX file system
B) Supported SAN/NAS storage
C) Automatic Storage Management (ASM)
D) Cluster File System
E) Raw Devices
5. According to the Maximum Availability Architecture, which case is best?
A) Run two identical sites with a primary RAC database on the first site, and RAC physical and logical standby databases on the second site.
B) Run two identical sites with a primary RAC database on the first site, and only a RAC physical standby database on the second site.
C) Run two identical sites with a primary RAC database on the first site, and non-RAC physical and logical standby databases on the second site.
D) Run two identical sites with a primary RAC database on the first site, and only a RAC logical standby database on the second site.
Solutions:
| Question # 1 Answer: B,C,D | Question # 2 Answer: C | Question # 3 Answer: B,D | Question # 4 Answer: A | Question # 5 Answer: A |
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