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 | Objectives |
|---|---|
| Topic 1: Performance and Tuning | - Monitoring RAC performance - Load balancing and failover - Troubleshooting performance issues |
| Topic 2: Oracle RAC Architecture | - Cluster fundamentals and components - Shared storage concepts - Cache Fusion and interconnect communication |
| Topic 3: Installation and Configuration | - Installing RAC database software - Preparing RAC environment - Installing Oracle Clusterware |
| Topic 4: Cluster and Database Administration | - Backup and recovery in RAC - Services configuration and management - Managing RAC instances |
| Topic 5: High Availability Concepts | - Failover mechanisms - RAC recovery scenarios |
Oracle Database 10g R2: Administering RAC Sample Questions:
Which two initialization parameters must be set to start up an ASM instance in a RAC environment? (Choose two.)
- A. ASM_DISKSTRING
- B. CLUSTER DATABASE
- C. ASM_POWER_LIMIT
- D. ASM_DISKGROUPS
- E. B_UNIQUE_NAME
- F. INSTANCE_TYPE
Correct Answer: B,F 🗳️
You need to add a new service to your RAC database, called DBA, to account for all the work done by database administrator sessions performing routine maintenance, to make this visible in the v$service_stats view. The maintenance would be done at quieter times but restricted session is not an option due to round-the-clock access requirements. The database administration team may connect locally or remotely to the RAC database. You decide to use DBCAto create the new service.
What must be true to allow client-server connection to the DBA service? (Choose two.)
- A. The TNSNAMES.ORAfile or a name server must contain the net service entries for the DBA service.
- B. The service must be started using the DBMS_SERVICE.START_SERVICE procedure.
- C. The services must be started using the SRVCTL START SERVICE command.
- D. All the listeners must be reloaded using LSNRCTL RELOAD to recognize the dynamically created service.
- E. The ALTER SYSTEM REGISTER command must be used to induce PMON to register the service with the listeners.
- F. The service must have at least one preferred or available instance that is running and accepting logins.
Correct Answer: A,F 🗳️
Which initialization parameter would you use for each RAC instance to make sure that each listener on each RAC node is aware of the load of all the others?
- A. LOCALJJSTENER
- B. REMOTEJJSTENER
- C. PREFER LEAST LOADED NODE <listener-name>
- D. REMOTE_DEPENDENCIES_MODE "
Correct Answer: B 🗳️
When an ASM instance initializes, ASM discovers and examines the contents of all the disks that are in the paths designated in the ASM_DISKSTRING initialization parameter. Under which four other circumstances does disk discovery take place? (Choose four.)
- A. when you query V$ASM_DISKGROUP
- B. when you run ALTER DISKGROUP...ADD DISK
- C. when you query VJASMjDPERATION
- D. when you run ALTER DISKGROUP...RESIZE DISK
- E. when you query V$ASM_DISK
Correct Answer: A,B,D,E 🗳️
View the Exhibit, which displays a portion of an ADDM report from a RAC database. Which three statements are true? (Choose three.)
- A. The ADDM report output reveals a "hot block" condition.
- B. The Findings Path section indicates that the Cluster wait class is consuming a significant proportion of the database time.
- C. The SQL statement with the ID dqsu2hwys8rcf was executed 40000 times
- D. A LOCK TABLE statement is causing excessive inter-instance messaging.
Correct Answer: B,C,D 🗳️
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