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Oracle 1Z0-048 Exam Syllabus Topics:

Oracle Database 10g R2: Administering RAC Sample Questions:

1. You define the ERP service using this statement:
srvctl add service -d RACDB -s ERP -r RAC01 -P PRECONNECT srvctl start service -d RACDB -s
ERP
You then use this connect string to connect to your RAC instances:
ERP =
(DESCRIPTION =(FAILOVER=ON)(LOAD_BALANCE=ON)
(ADDRESS=(PROTOCOL=TCP)(HOST=N1 VIP)(PORT=1521))
(ADDRESS=(PROTOCOL=TCP)(HOST=N2VIP)(PORT=1521))
(CONNECTJDATA = (SERVICE_NAME = ERP)
(FAILOVER_MODE =
(BACKUP=ERP_PRECONNECT)(TYPE=SESSION)(METHOD=PRECONNECT))))
You successfully establish a connection to your RAC database using the above connect string.
How many connections are established, and on which instances?

A) two on RAC02
B) two on RAC01
C) one on RAC01 and one on RAC02
D) only one on RAC01

2. You are about to bring your Web server under control of the Oracle Clusterware to make it highly available. Which actions do you need to perform to accomplish this task? (Choose all that apply.

A) Write an action script that Oracle Clusterware would use to start, stop, and check the status of an application.
B) Create an application VIP profile using crs_profile, register it with crs_register, set its permission with crs_setperm, and then start it using crs_start.
C) Have the system administrator create an application VIP at the operating system level for you to use with the application.
D) Once done, manage the Web server with SRVCTL
E) Create an application profile using crs_profile, register it with crs_register, set its permission with crs_setperm, and then start it with crs_start.

3. Your company has certain standard practices for technology and you are configuring ASM disk groups for your four-node RAC cluster. The company guidelines suggest that there is one disk group for the flash recovery area that is shared by all databases and a separate disk group for the database area of all databases. Which three exceptions exist that may require you to create additional disk groups? (Choose three.)

A) The retention policy for backups are different for different databases.
B) Applications using the databases have different Service-Level Agreements for response time and throughput.
C) Some database instances are shut down every night while others are always running.
D) Some databases operate in ARCHIVELOGMODE and others in NOARCHIVELOGMODE.
E) There are large nonpartitioned tables accessed frequently using indexes.
F) There are partitioned tables where the older partitions are in read-only tablespaces and seldom accessed, but the more recent partitions are frequently accessed.
G) The disk farm has different disk models with different characteristics and ages.

4. You execute the following command from the first node of your cluster: crsctl add ess votedisk /dev/raw/raw9
However, you get an error message indicating that Oracle Clusterware stack is not started. Which command would you execute?

A) crsctl start crs Crsctl add ess votedisk /dev/raw/raw9
B) crsctl add ess votedisk /dev/raw/raw9 -force
C) crsctl enable crs Crsctl add ess votedisk /dev/raw/raw9
D) crsctl enable crs Crsctl add ess votedisk /dev/raw/raw9 -force
E) crsctl start crs Crsctl add ess votedisk /dev/raw/raw9 -force

5. Over a six-month period, you have been regularly monitoring your four-instance RAC database,
which is running on the first 4 nodes of a 6-node cluster, by using ADDM and by monitoring well-
known combinations of wait event and statistics in AWR reports.
Two weeks ago, a newer version of your main application went live. Starting last week, you
noticed a large increase in CPU time (consumed by the three application services on your RAC
database) due to increased workload.
The OLTP and DSS services have not had a decrease in the percentage of time spent using CPU.
However, for the BATCH service the percentage of time spent using CPU has gone down and the
wait-time percentage has increased.
You want to recommend a tuning exercise to your team. Which two recommendations would you
make first, based on the symptoms described? (Choose two.)

A) Tune SQL from the BATCH service programs because they may benefit from SQL tuning.
B) The OLTP and DSS service programs may scale well and could benefit from adding new database instances on one or both of nodes 5 and 6, and by adding more nodes the SQL for BATCH service programs would perform better due to more CPU power.
C) The BATCH service programs may scale well and could benefit from adding new database instances on either node 5 or 6, or on both.
D) Tune SQL for the OLTP and DSS service programs because they may benefit from SQL tuning.
E) The OLTP and DSS service programs may scale well and could benefit from adding new database instances on either node 5 or 6, or on both.

Solutions: