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Oracle 1Z0-048 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Backup and Recovery in RAC Environment | 15% | - Performing backup and recovery operations - Configuring RMAN for RAC |
| Topic 2: RAC Database and Instance Administration | 20% | - Using SRVCTL and Enterprise Manager - Starting and stopping RAC components - Managing services and workloads |
| Topic 3: Oracle RAC Installation and Database Creation | 20% | - Installing Oracle RAC software - Preparing for RAC installation - Creating RAC databases with DBCA |
| Topic 4: Automatic Storage Management (ASM) for RAC | 15% | - Managing ASM instances and disk groups - Installing and configuring ASM |
| Topic 5: Oracle Clusterware Installation and Configuration | 20% | - Pre-installation tasks and requirements - Managing Clusterware components - Installing and configuring Clusterware |
| Topic 6: Monitoring and Performance Tuning | 10% | - Resolving common performance issues - Monitoring RAC environment |
Oracle Database 10g R2: Administering RAC Sample Questions:
Question 1
You decide to implement a Data Guard configuration to support a disaster recovery plan for your RAC database. Your primary database has all shared files and the flash recovery area is stored on ASM disk groups. Which three options exist for storing the data guard broker configuration files at the primary location? (Choose three.)
A. can be stored on shared Raw Devices
B. must be stored on Oracle Cluster File System if a cluster file system is used
C. may be stored on any supported cluster file system if a cluster file system is used
D. can be in any shared ASM disk group
E. must be in the same shared ASM disk group as the database data files if the broker configuration files are stored in ASM disk groups
F. must be in the same shared ASM disk group as the Flash Recovery Area if the broker configuration files are stored in ASM disk groups.
Question 2
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 ENABLE THREAD 3;
B. ALTER DATABASE ADD LOGFILE THREAD 3 GROUP 7;
C. ALTER SYSTEM ADD LOGFILE THREAD 3 GROUP 7;
D. ALTER SYSTEM ADD LOGFILE THREAD 3 GROUP 8;
E. ALTER DATABASE ENABLE THREAD 3;
F. ALTER DATABASE ADD LOGFILE THREAD 3 GROUP 8;
Question 3
View the Exhibit, which displays a portion of an ADDM report from a RAC database. Which three statements are true? (Choose three.)
A. The SQL statement with the ID dqsu2hwys8rcf was executed 40000 times
B. The Findings Path section indicates that the Cluster wait class is consuming a significant proportion of the database time.
C. The ADDM report output reveals a "hot block" condition.
D. A LOCK TABLE statement is causing excessive inter-instance messaging.
Question 4
Which three statements about Snapshot Control File Management in a RAC environment are true? (Choose three.)
A. You can use a cluster file system or a raw device to store snapshot control files.
B. You need to configure a default path and file name for these snapshot control files that is valid on every node from which you might initiate an RMAN backup.
C. RMAN parameters controlling snapshot control files can be configured from the Enterprise Manager Cluster Database home page.
D. By default, the snapshot control file is created on the node that is making the backup.
Question 5
Over a six-month period, you have been regularly monitoring your four-instance RAC database,
which is running on the first 4 nodes of a 6-node cluster, by using ADDM and by monitoring well-
known combinations of wait event and statistics in AWR reports.
Two weeks ago, a newer version of your main application went live. Starting last week, you
noticed a large increase in CPU time (consumed by the three application services on your RAC
database) due to increased workload.
The OLTP and DSS services have not had a decrease in the percentage of time spent using CPU.
However, for the BATCH service the percentage of time spent using CPU has gone down and the
wait-time percentage has increased.
You want to recommend a tuning exercise to your team. Which two recommendations would you
make first, based on the symptoms described? (Choose two.)
A. The OLTP and DSS service programs may scale well and could benefit from adding new database instances on one or both of nodes 5 and 6, and by adding more nodes the SQL for BATCH service programs would perform better due to more CPU power.
B. The BATCH service programs may scale well and could benefit from adding new database instances on either node 5 or 6, or on both.
C. Tune SQL from the BATCH service programs because they may benefit from SQL tuning.
D. The OLTP and DSS service programs may scale well and could benefit from adding new database instances on either node 5 or 6, or on both.
E. Tune SQL for the OLTP and DSS service programs because they may benefit from SQL tuning.
Solutions:
| Question 1 Answer: A,C,D | Question 2 Answer: B,E,F | Question 3 Answer: A,B,D | Question 4 Answer: A,B,D | Question 5 Answer: C,D |
