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Oracle Database 10g R2: Administering RAC 認定 1Z0-048 試験問題:

1. What is the action of your client connection when it is using the following connect string? net_service_name= (DESCRIPTION (ADDRESS=(PROTOCOL=tcp)(HOST=sales1 -svr-vip)(PORT=1521)) (ADDRESS=(PROTOCOL=tcp)(HOST=sales2-svr-vip)(PORT=1521))) (CONNECT_DATA=(SERVICE_NAME=sales. us. acme, com)))

A) It always connects you to the least loaded node.
B) It always connects you to the first protocol address.
C) It randomizes its connection on the available listeners.
D) It tries to connect you to the listener on SALES2-SRV-VIP if the listener on SALES1-SRV-VIP is down.

2. Your company requires that certain database systems be made continuously available because there are revenue-earning applications using Oracle databases. You already use RAC; it is a requirement for the applications to have continuous read and write access to all schema objects in the database during routine DBA maintenance activities. Which three technologies would you recommend for minimizing planned downtime for the application caused by unavailability of data due to those activities? (Choose three.)

A) Rolling Release Upgrades
B) Online Index Rebuild
C) Bigfile Tablespaces
D) Online Table Redefinition
E) Hardware-Assisted Resilient Data
F) Fast Start Fault Recovery

3. You observe a high number of gc current failure on your RAC system. What could be causing this issue?

A) Too much parsing is occurring on your system.
B) There is too much contention on the High Water Mark enqueue of your tables.
C) Too much manual locking is occurring.
D) You are not using the correct private interconnect.

4. Your system administrator informs you that there are a number of unexpected system reboots occurring on one of your Oracle database clusters. The system administrator has no clue whether this is a hardware or system software issue or whether the Oracle Clusterware is causing these reboots. To determine the source of these unexpected reboots, the system administrator asks you how you can enable debugging on the Oracle Clusterware software components. Which two statements are true regarding Oracle Clusterware debugging? (Choose two.)

A) You enable Oracle Clusterware debugging using the CRSCTL command as the root user.
B) You enable Oracle Clusterware debugging using the SRVCTL command.
C) You can enable Oracle Clusterware debugging dynamically.
D) You have to restart Oracle Clusterware after enabling debugging to activate it.
E) You enable Oracle Clusterware debugging using the CRSCTL command as the oracle user.

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

質問と回答：

質問 # 1
正解： D

質問 # 2
正解： A、B、D

質問 # 3
正解： D

質問 # 4
正解： A、C

質問 # 5
正解： D、E、F