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Oracle Database 10g R2: Administering RAC Sample Questions:

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

2. You are preparing to create a RAC cluster. You review the RAC requirements for UNDO tablespaces. Which three are valid statements? (Choose three.

A) ALTER SYSTEM SET UNDO_TABLESPACE=undotbs3 SID='RDBD01'; is correct.
B) It is not necessary to assign a specific UNDO tablespace to a specific instance.
C) If no UNDO tablespace is available when the instance starts, the instance stores undo records in the SYSTEM rollback segments.
D) ALTER DATABASE SET UNDO_TABLEPACE=undotbs3 SID='RDBD01'; is correct.
E) You cannot assign a specific UNDO tablespace to a specific instance.

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

4. Which three statements regarding the management of Oracle Cluster Registry (OCR) on a UNIX platform are true? (Choose three.)

A) The OCR autobackups are automatically copied to every ORA_CRS_HOME on each node in the cluster.
B) The location of the OCR autobackup can be changed to a shared file system with the ocrconfig -backuploc command.
C) One CRS instance in the cluster automatically creates OCR backups every four hours, at the beginning of each day and of each week.
D) The default target location of each automatically generated OCR backup file is the <CRS Home>/cdata/<cluster name> directory.
E) You can customize the OCR backup frequencies and the number of retained copies.

5. 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) You are not using the correct private interconnect.
D) Too much manual locking is occurring.

Solutions: