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Oracle Database 10g R2: Administering RAC Sample Questions:

1. You decide to change the redo thread of one of your database instances.
Now you have only two threads: thread 1 is currently being used by instance RAC01, and thread 2 is currently being used by instance RAC02.
In which three orders could you perform the following commands to add thread 3 to your
database, and ensure that instance RAC01 is using thread 3? (Choose three acceptable orders.
1 srvctl stop instance -d RACDB -i RAC01
2 ALTER DATABASE ENABLE THREAD 3;
3 ALTER DATABASE ADD LOGFILE THREAD 3 GROUP 6;
4 srvctl start instance -d RACDB -i RAC01
5 ALTER SYSTEM SETthread=3 SCOPE=SPFILE SID='RAC01';
6 ALTER DATABASE ADD LOGFILE THREAD 3 GROUP 5;

A) 2,6,3, 5,1
B) 6,3,5, 2,1
C) 2,5,1, 4,3
D) 2,5,1, 4,6
E) 3,6,5, 2,1
F) 6,3,2, 5,1

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

3. You defined the HR service using the following command:
srvctl add service -d RACDB -s HR -r RAC02.RAC03 -a RAC01
After a while, you realize that there is a workload peak on the HR service, and you decide to temporarily start HR on the RAC04 instance.
Which command or series of commands would you use to start HR on RAC04?

A) srvctl remove service -d RACDB -s HR Srvctl add service -d RACDB -s Hr-r RAC02.RAC03.RAC04 -a RAC01
B) srvctl modify service -d RACDB -s HR -i RAC02.RAC03.RAC04 -a RAC01
C) srvctl remove service -d RACDB -s HR Srvctl add service -d RACDB -s Hr-r RAC02.RAC03.RAC04 -a RAC01 srvctl start service -d RACDB -s HR
D) srvctl start service -d RACDB -s HR -i RAC04
E) srvctl modify service -d RACDB -s HR -i RAC02.RAC03.RAC04 -a RAC01 srvctl stop service -d RACDB -s HR srvctl start service -d RACDB -s HR

4. 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) PREFER LEAST LOADED NODE <listener-name>
B) LOCALJJSTENER
C) REMOTEJJSTENER
D) REMOTE_DEPENDENCIES_MODE "

5. Which three statements are correct regarding ASM instances in a RAC environment? (Choose three.)

A) ASM instances recognize their disks by looking at their headers.
B) ASM instances can use different values for ASM_POWER_LIMIT.
C) ASM instances must all have the same value for ASM DISKGROUPS.
D) ASM instances can mount different sets of disk groups.
E) ASM instances must all have the same value for ASM_DISKSTRING.

Solutions: