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Oracle Database 10g R2: Administering RAC Sample Questions:

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

2. 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 run ALTER DISKGROUP...RESIZE DISK
B) when you query V$ASM_DISK
C) when you query VJASMjDPERATION
D) when you query V$ASM_DISKGROUP
E) when you run ALTER DISKGROUP...ADD DISK

3. You have migrated your 10g R1 cluster to 10g R2. You wish to create multiple copies of the voting disk. What must you consider when doing this?

A) If multiplexing, three voting disks on independent devices is ideal.
B) Since ASM is the stated direction of Oracle, ASM is the best storage for voting disks.
C) For the voting disk, it is better to rely on multipathing solutions instead of multiplexing.
D) If multiplexing, two voting disks on independent devices is ideal.

4. 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 must all have the same value for ASM_DISKSTRING.
D) ASM instances can mount different sets of disk groups.
E) ASM instances recognize their disks by looking at their headers.

5. View the Exhibit, which displays a portion of an ADDM report from a RAC database. Which three statements are true? (Choose three.)

A) The Findings Path section indicates that the Cluster wait class is consuming a significant proportion of the database time.
B) The ADDM report output reveals a "hot block" condition.
C) The SQL statement with the ID dqsu2hwys8rcf was executed 40000 times
D) A LOCK TABLE statement is causing excessive inter-instance messaging.

Solutions: