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 | Weight | Objectives |
|---|---|---|
| Topic 1: Oracle Clusterware Installation and Configuration | 20% | - Installing and configuring Clusterware - Pre-installation tasks and requirements - Managing Clusterware components |
| Topic 2: Oracle RAC Installation and Database Creation | 20% | - Creating RAC databases with DBCA - Preparing for RAC installation - Installing Oracle RAC software |
| Topic 3: Monitoring and Performance Tuning | 10% | - Resolving common performance issues - Monitoring RAC environment |
| Topic 4: Automatic Storage Management (ASM) for RAC | 15% | - Installing and configuring ASM - Managing ASM instances and disk groups |
| Topic 5: RAC Database and Instance Administration | 20% | - Managing services and workloads - Starting and stopping RAC components - Using SRVCTL and Enterprise Manager |
| Topic 6: Backup and Recovery in RAC Environment | 15% | - Performing backup and recovery operations - Configuring RMAN for RAC |
Oracle Database 10g R2: Administering RAC Sample Questions:
You are working with Oracle Support to resolve an issue regarding the Oracle Clusterware software. The Oracle support engineer wants you to upload all relevant CRS log and trace files.
How would you provide al the requested log and trace files?
- A. Use an operating system command to create an archive with all the log and trace files stored in the ORA_CRS_HOME/log directory and upload the files to Oracle Support.
- B. Use Grid Control to collect and send all required log and trace files to Oracle Supporl.
- C. Collect all required log and trace files using the diagcollection.plcommand and upload them to Oracle Support.
- D. Upload each and every available log and trace files to Oracle Support.
Correct Answer: C 🗳️
View the Exhibit.
Users complain about the performance of an Oracle database-based application. You are requested to investigate. From Grid Control, you immediately infer that one of the cluster database instances is currently unavailable. You also notice that the host where the instance belongs was recently rebooted due to an unknown reason.
Using Grid Control, you restart the instance and performance rapidly improves. You want to determine the cause of the instance startup failure after the system reboot, and you check the resource profiles on both the database and ASM instances involved.
Why was the instance not started by CRS?
- A. The instance was started by CRS but due to multiple instance failures CRS disabled the database instance, thereby preventing further restarts.
- B. The instance was not started by CRS because its target state was set to "offline" before the system was rebooted.
- C. The instance was started by CRS after the system was rebooted, but someone stopped it from within SQL*Plus.
- D. The instance could not be started by CRS because this instance depends on an ASM instance, which has its autostart attribute set to a value, thereby preventing CRS from starting this ASM instance after a system reboot.
- E. The database instance's autostart attribute indicates that CRS should not restart it after system boot.
Correct Answer: E 🗳️
You decide to implement a Dataguard configuration for your RAC installation to support your disaster recovery architecture. There are two instances on the primary and two on the physical standby. Which are the two appropriate settings for the DG_BROKER_CONFIG_FILE1 and DG_BROKER_CONFIG_FILE2 initialization parameters? (Choose two.)
- A. DG_BROKER_CONFIG_FILE1 set to a nonshared location for each primary database instance and DG_BROKER_CONFIG_FILE2 set to a shared location for each primary database instance on the primary database cluster.
- B. DG_BROKER_CONFIG_FILE1 set to a location shared between each primary database instance and DG_BROKER_CONFIG_FILE2 set to a different location shared between each primary database instance on the primary database cluster.
- C. DG_BROKER_CONFIG_FILE2 set to the same shared location for the second instance of both the primary and the standby databases.
- D. DG_BROKER_CONFIG_FILE1 set to the same shared location shared between the first instance of both the primary and the standby databases.
- E. DG_BROKER_CONFIG_FILE1 set to a nonshared location for each secondary database instance and DG_BROKER_CONFIG_FILE2 set to a shared location for each secondary database instance on the secondary database cluster.
- F. DG_BROKER_CONFIG_FILE1 set to a location shared between each standby database instance and DG_BROKER_CONFIG_FILE2 set to a different location shared between each standby database instance on the standby database cluster.
Correct Answer: B,F 🗳️
Which three statements are correct regarding ASM instances in a RAC environment? (Choose three.)
- A. ASM instances can use different values for ASM_POWER_LIMIT.
- B. ASM instances must all have the same value for ASM DISKGROUPS.
- C. ASM instances recognize their disks by looking at their headers.
- D. ASM instances must all have the same value for ASM_DISKSTRING.
- E. ASM instances can mount different sets of disk groups.
Correct Answer: A,C,E 🗳️
Which two statements are true in any RAC environment? (Choose two.)
- A. A publicly enabled thread can be used by any instance of your RAC database.
- B. A RAC database must contain at most one redo thread for each instance.
- C. A RAC database must contain at least two threads of redo log files per instance.
- D. After your redo threads are defined, you cannot add new ones.
- E. A redo thread must contain at least two groups of redo log files before it can be enabled.
Correct Answer: A,E 🗳️
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