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Oracle Database 10g R2: Administering RAC Sample Questions:

1. When do you get the first notification after you execute the following command on instance
RDBA1?
execDBMS_SERVER_ALERT.SET_THRESHOLD(-
METRICSJD => dbms_server_alert.elapsed_time_per_call,
WARNINGJDPERATOR => dbms_server_alert.operator_ge,
WARNING_VALUE => 500000',
CRITICAL_OPERATOR => dbms_server_alert.operator_ge,
CRITICAL_VALUE => 750000',
OBSERVATION_PERIOD => 15,
CONSECUTIVEJDCCURRENCES => 3,
INSTANCE_NAME => 'RDBA1',
OBJECT_TYPE => dbms_server_alert.object_type_service,
OBJECT_NAME =>'ERP");

A) when the average elapsed time per call for the ERP service over a 15-minute period exceeds
0.75 seconds three consecutive times
B) when the average elapsed time per call for the ERP service over a 15-minute period exceeds
0.5 seconds three consecutive times
C) when the average elapsed time per call for the ERP service over a 45-minute period exceeds
0.75 seconds
D) when the average elapsed time per call for the ERP service over a 45-minute period exceeds
0.5 seconds

2. You are asked to justify your proposed Maximum Availability Architecture to the IT director who feels that a four-node RAC cluster on the primary should not require a four-node RAC cluster for a physical standby database. The director suggests that either a non-RAC database should be used on the standby or that at most a two-node cluster is all that is required. Your proposed architecture was designed for both planned and unplanned downtime and for performance and scalability of services for all eventualities. How would you justify your proposal? (Choose two.)

A) The four-node physical standby database provides for continuous availability of services but the two-node RAC physical standby database does not.
B) Asymmetric configurations prevent the standby from issuing a FLASHBACK DATABASE command if required after a failover.
C) A two-node physical standby would not allow as many services to be supported as a four-node physical standby does in case of a failover to the physical standby.
D) The four-node physical standby provides for the same service preferences and performance profile in case of a failover to the physical standby database.
E) A non-RAC physical standby would not provide for high availability in the case of a lights out failover to the standby.

3. 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) 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.
B) Have the system administrator create an application VIP at the operating system level for you to use with the application.
C) Once done, manage the Web server with SRVCTL
D) Write an action script that Oracle Clusterware would use to start, stop, and check the status of an application.
E) 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.

4. View the Exhibit.
You are asked to help a colleague to logically remove node NLEDUC2 from a RAC cluster
installation.
On observing the colleague's terminal, you notice the output as seen in the exhibit. Based on this,
which five additional steps would you recommend? Do not be concerned with the correct
sequence for the steps.
(Choose five.)

A) Check that the node has been removed from the database and ASM inventories.
B) Check that the database and ASM instances are all terminated on NLEDUC2.
C) Check that the ONS configuration has been updated on the remaining node.
D) Stop and restart the clusterware on NLEDUC1.
E) Stop and restart the nodeapps on NLEDUC1.
F) Check that the software has been removed from the database and ASM homes on NLEDUC2.
G) Remove the listener from NLEDUC2.
H) Remove the node from the clusterware.

5. Which CREATE SEQUENCE option is the most scalable?

A) CACHE NOORDER
B) NOCACHE ORDER
C) CACHE ORDER
D) NOCACHE NOORDER

Solutions: