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Oracle 1Z0-048 Exam Syllabus Topics:

Oracle Database 10g R2: Administering RAC Sample Questions:

1. You are considering issues involving backup and recovery of the voting disk. Select four correct statements. (Choose four.)

A) To back up the voting disk, use the command ocrconfig -export.
B) If you lose your voting disk and do not have a backup, you must reinstall Oracle Clusterware. ]
C) Backup can be performed online.
D) Use symbolic links to simplify recovery of the voting disk.
E) You can determine the voting disks currently used by CSS with the command crsctl query ess votedisk.

2. 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.

3. Which three statements about patching Oracle products in a clustered environment are true? (Choose three.)

A) OUI prevents potentially destructive concurrent patch installations through the use of Inventory List Locks.
B) OUI manages patches in a clustered environment only if a shared ORACLEJHOME is employed.
C) The Oracle Universal Installer (OUI) is cluster-aware and able to manage patches on all nodes in your cluster.
D) The OUI automatically manages the patch installation progress, including the copying of files to remote nodes, just as it does with the CRS and database binary installations.

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

5. View the Exhibit.
Users complain about the performance of an Oracle database-based application. You are requested to investigate. From Grid Control, you immediately infer that one of the cluster database instances and one of the cluster ASM instances are currently unavailable. You also see that the host where the instance belongs was recently rebooted due to an unknown reason.
Using Grid Control, you restart the instance and performance rapidly improves. You want to determine the cause of the instance startup failure after system boot, and you check the resource profiles on both the database and ASM instances involved.
Why was the instance not started by CRS?

A) The database instance could not be started by CRS because this instance depends on an ASM instance, whose autostart attribute indicates that CRS should not start this ASM instance after system boot.
B) The instance was not started by CRS because its target state was set to "offline" a while before the system was rebooted.
C) The database instance autostart attribute is set to a value, thus preventing CRS from starting it after a system reboot.
D) The instance was started by CRS but due to multiple instance failures CRS disabled the database instance, thereby preventing further restarts.
E) The instance was started by CRS after the system was rebooted, but someone stopped it from within SQL*Plus.

Solutions: