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Oracle Database 10g R2: Administering RAC Sample Questions:

1. View the Exhibit.
You are asked to help a colleague to logically remove node NLEDUC2 from a RAC cluster
installation.
On observing the colleague's terminal, you notice the output as seen in the exhibit. Based on this,
which five additional steps would you recommend? Do not be concerned with the correct
sequence for the steps.
(Choose five.)

A) Remove the node from the clusterware.
B) Remove the listener from NLEDUC2.
C) Stop and restart the clusterware on NLEDUC1.
D) Check that the node has been removed from the database and ASM inventories.
E) Check that the software has been removed from the database and ASM homes on NLEDUC2.
F) Stop and restart the nodeapps on NLEDUC1.
G) Check that the database and ASM instances are all terminated on NLEDUC2.
H) Check that the ONS configuration has been updated on the remaining node.

2. 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 have at least one preferred or available instance that is running and accepting logins.
C) All the listeners must be reloaded using LSNRCTL RELOAD to recognize the dynamically created service.
D) The services must be started using the SRVCTL START SERVICE command.
E) The ALTER SYSTEM REGISTER command must be used to induce PMON to register the service with the listeners.
F) The service must be started using the DBMS_SERVICE.START_SERVICE procedure.

3. 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 DATABASE ADD LOGFILE THREAD 3 GROUP 7;
B) ALTER SYSTEM ADD LOGFILE THREAD 3 GROUP 7;
C) ALTER SYSTEM ADD LOGFILE THREAD 3 GROUP 8;
D) ALTER DATABASE ENABLE THREAD 3;
E) ALTER DATABASE ADD LOGFILE THREAD 3 GROUP 8;
F) ALTER SYSTEM ENABLE THREAD 3;

4. You have attended a user group presentation on RAC and based on what you have learned you feel that your company would benefit from having the RAC option to meet its Oracle database requirements in several ways. Your manager does not know much about RAC and asks you to create a presentation to the team explaining RAC, and whether it should be implemented in your installation. Which three statements explain the benefits and implications of RAC? (Choose three.)

A) RAC would increase scalability for all application workloads in all cases.
B) RAC would increase availability in the event of a network failure.
C) RAC used in conjunction with parallel execution may provide for speedup of OLTP workload processes.
D) RAC alone would increase availability when doing release upgrades.
E) RAC would increase availability in the event of node and instance failures.
F) RAC alone would not help protect from human errors.
G) RAC would increase availability in the event of data failures.
H) RAC used in conjunction with parallel execution may provide speedup of DSS queries.

5. Your company asked you to implement RAC to enhance the scalability and availability of the database that you manage. Your coworker suggested that you use ASM as the only storage option. However, you implemented RAC with Automatic Storage Management (ASM) as well as OCFS as storage options. What are the reasons for implementing both OCFS and ASM as storage options? (Choose all that apply.)

A) You do not want to store any file other than voting and OCR files in ASM.
B) You want to use the Oracle Managed Files (OMF) feature but that is not supported by ASM.
C) You want to avoid keeping Oracle binaries on local storage.
D) You require OCFS to store archive log files because ASM does not support these files.
E) You do not want to use raw devices to store voting and OCR files.

Solutions: