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Oracle Database 10g R2: Administering RAC Sample Questions:

1. 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 is currently unavailable. You also notice 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 the system reboot, and you check the resource profiles on both the database and ASM instances involved.
Why was the instance not started by CRS?

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

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

3. Which optional parameter of the DESCRIPTION clause of a TNS entry can you use to make sure that another protocol address is tried if the first one fails?

A) FAILOVER
B) LOAD_BALANCE
C) SOURCE_ROUTE
D) TYPE OF SERVICE

4. You are the administrator of a Linux-based Oracle cluster. To meet your company's disaster recovery requirements, you have to make backups of the OCR to a tape device. What are your options? (Choose all that apply.)

A) Use your favorite tape backup command to back up the OCR from disk to tape.
B) Use RMAN to back up the OCR from disk to tape.
C) Use the Linux DD command to write the OCR directly to tape.
D) Use your favorite tape backup command to back up the physical OCR backups from disk to tape.
E) Use the OCRCONFIG command to have CRSD write the OCR backup to tape for you.

5. Which two statements are true in any RAC environment? (Choose two.)

A) A RAC database must contain at most one redo thread for each instance.
B) After your redo threads are defined, you cannot add new ones.
C) A redo thread must contain at least two groups of redo log files before it can be enabled.
D) A publicly enabled thread can be used by any instance of your RAC database.
E) A RAC database must contain at least two threads of redo log files per instance.

Solutions: