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Oracle Database 10g R2: Administering RAC Sample Questions:

1. You are migrating a single-instance Oracle database to RAC. The data files and Flash Recovery Area would be migrated to ASM using the RMAN commands BACKUP AS COPY DATABASE and BACKUP RECOVERY AREA, and stored in an ASM diskgroups called +DB_DG and +FR_DG. The DB_CREATE_FILE_DEST parameter would be set to +DB_DG and the DB_RECOVERY_FILE_DEST parameter would be set to +FR_DG.
What are the three best options for the location of your archivelogs so that they may be used properly for recovery without DBA intervention? (Choose three.)

A) Local File System with each instance writing to a local location provided that the path names are identical on all nodes.
B) Local File System with each instance writing to a local location provided that NFS read mount points are created to all other nodes with instances of the database.
C) Cluster File System with each instance writing to a separate location as long as they are in directories under the same mount point.
D) ASM diskgroup +DB_DG as specified for the Database Area provided that the ASM diskgroup is mounted on all ASM instances.
E) Cluster File System with each instance writing to a shared location.
F) ASM diskgroup +FR_DG as specified for the Flash Recovery Area provided that the ASM diskgroup is mounted on all ASM instances.

2. View the Exhibit and examine an installation step of Oracle Enterprise Manager Grid Control 10gR2 to manage your RAC installation. You entered the host name but you are not sure about the port number. Thefollowing is the list of port numbers from the host ed-otraclin17b.us.oracle.com:

A) 5561
B) 1521
C) 3938
D) 4889
E) 1158

3. You have a well-tuned, non-RAC single instance Oracle database with several services, all of which perform perfectly. You plan to migrate the database to RAC in the next two weeks and all file systems would be shared using Oracle Cluster File System. After the migration, you want to perform a test to monitor RAC-specific tuning issues that would not have occurred on a non-RAC database. Which six areas would you monitor to determine whether there are RAC-specific performance problems after migration? (Choose six.)

A) Instance recovery time
B) Services with query-intensive applications relying on full table scans
C) Services with insert-intensive applications that generate their own keys without Oracle sequences
D) Services with applications that use external tables
E) Services with insert-intensive applications that use Oracle sequences for index keys
F) Interconnect latency
G) Services with applications that have occasional queries, using index access on modestly sized tables
H) Services with applications using local context variables
I) Services with applications that truncate large tables

4. Which three statements regarding backup of the voting disk are true? (Choose three.)

A) On UNIX platforms, the voting disk can be backed up with the dd command.
B) A backup of the voting disk should be taken whenever an RMAN catalog reset is done.
C) A backup of the voting disk should be taken whenever a new node is added to the cluster.
D) A backup of the voting disk should be taken whenever an existing node is removed from the cluster.
E) Whenever a voting disk backup is made, the Clusterware software should be stopped on all nodes in the cluster.

5. You are asked to investigate a problem regarding client connectivity between the HR service and a database, which is on a four-node RAC cluster. The HR service has four preferred instances on the RAC cluster. This cluster also supports five other services. Occasionally, a client-connect request for the HR service takes several minutes to connect, whereas the other five services connect within a second or two. Client-side and server-side connection load balancing are used for all the services. Which combination of network settings would explain these symptoms? (Choose two.)

A) The TNSNAMES. ORA file has an entry for the five other services that use the hostnames for the Virtual IP addresses and all the listeners listen on both the Public and Virtual IP addresses.
B) The listener on one or more nodes is listening only on the Virtual IP address and the HR TNSNAMES entry uses the Hostnames for the Virtual IP addresses.
C) The TNSNAMES. ORA file has an entry for all six services that uses the host name for the Public IP address and not the Virtual IP address.
D) The listener on one or more nodes is listening on both the Public IP address and the Virtual IP address, and the HR TNSNAMES entry uses the Virtual IP address.
E) The TNSNAMES.ORA file has an entry for the HR service that uses only the host name for the public IP address, and all the listeners listen on both the Public and Virtual IP addresses.

Solutions: