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Oracle Database 10g R2: Administering RAC Sample Questions:

1. Which optional parameter of the DESCRIPTION clause of a TNS entry can you use to make sure that another protocol address is tried if the first one fails?

A) SOURCE_ROUTE
B) LOAD_BALANCE
C) TYPE OF SERVICE
D) FAILOVER

2. Which two statements are true regarding high availability in a RAC environment? (Choose two.)

A) When you have a serious crash of your primary site, Data Guard Broker automatically initiates the failover to the standby site.
B) Each primary RAC instance must send its redo stream to the same standby RAC instance.
C) When you have a serious crash of your primary site, it is your responsibility to initiate the failover to the standby site in case you are not using the Fast-Start Failover feature.
D) It is the Data Guard Broker's responsibility to communicate with CRS during a switchover operation to stop and start services according to each Data Guard site role.
E) You can have multiple RAC instances apply standby redo log files to the standby database.

3. Which two statements are true in a RAC environment? (Choose two.)

A) After you create a service using Database Configuration Assistant (DBCA), you need to start it with a separate command.
B) When using SRVCTL to create a service, you do not need to add the corresponding TNS entry in your tnsnames.ora.
C) After you create a service, you need to enable it for CRS to manage it.
D) 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.
E) After you create a service using SRVCTL, you need to start it with a separate command.

4. You are migrating a single-instance Oracle database to RAC. The data files and Flash Recovery Area would be migrated to ASM using the RMAN commands BACKUP AS COPY DATABASE and BACKUP RECOVERY AREA, and stored in an ASM diskgroups called +DB_DG and +FR_DG. The DB_CREATE_FILE_DEST parameter would be set to +DB_DG and the DB_RECOVERY_FILE_DEST parameter would be set to +FR_DG.
What are the three best options for the location of your archivelogs so that they may be used properly for recovery without DBA intervention? (Choose three.)

A) ASM diskgroup +DB_DG as specified for the Database Area provided that the ASM diskgroup is mounted on all ASM instances.
B) Local File System with each instance writing to a local location provided that the path names are identical on all nodes.
C) Cluster File System with each instance writing to a separate location as long as they are in directories under the same mount point.
D) Local File System with each instance writing to a local location provided that NFS read mount points are created to all other nodes with instances of the database.
E) Cluster File System with each instance writing to a shared location.
F) ASM diskgroup +FR_DG as specified for the Flash Recovery Area provided that the ASM diskgroup is mounted on all ASM instances.

5. You are asked to design a Maximum Availability Solution for a RAC configuration that provides for continuous availability for the Oracle database and which can survive instance failures, node failures, data failures, and site failures. The RAC configuration has a four-node cluster with five different services configured. Performance must be maintained for any failure situation for all the services, and all data must be preserved. All the servers in the configuration will have the same hardware. Which configuration would you recommend?

A) Asymmetric RAC and a Physical Standby Database in a Dataguard configuration with RAC and ASM at all sites with the same number of instances but different service preferences
B) Asymmetric RAC and Dataguard configuration with a mixture of RAC and single instances using ASM at all sites with the same service preferences
C) Symmetric RAC and a Physical Standby Database in a Dataguard configuration with RAC and ASM at all sites with the same number of instances and the same service preferences
D) Asymmetric RAC and a Logical Standby Database in a Dataguard configuration with RAC and ASM at all sites with the same number of instances but different service preferences

Solutions: