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1. Your company has a combination of high availability and scalability requirements that need to be addressed, and RAC has been discussed as a solution. There are a mix of "off-the-shelf software products and homegrown applications currently in use in your environment that run on single-instance Oracle databases. You have been asked by the IT director to provide an impact analysis report to help assess the impact on applications when migrating to RAC. Which three are among the areas that should be examined for performance impact and application functionality impact or for both? (Choose three.)

A) client/server type applications that use application local context variables
B) three-tier applications that use application global context variables
C) applications that use large parallel full table scans
D) applications that truncate tables in a data warehouse process
E) applications that access small tables using the same index occasionally
F) applications that use SQL profiles created by the ATO optimizer in the SQL Tuning Advisor

2. Which background process communicates load information to its listener?

A) MMON
B) SMON
C) LMON
D) PMON

3. Which initialization parameter would you use for each RAC instance to make sure that each listener on each RAC node is aware of the load of all the others?

A) LOCALJJSTENER
B) REMOTE_DEPENDENCIES_MODE "
C) PREFER LEAST LOADED NODE <listener-name>
D) REMOTEJJSTENER

4. 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) 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.
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) Tune SQL for the OLTP and DSS service programs because they may benefit from SQL tuning.
D) The BATCH service programs may scale well and could benefit from adding new database instances on either node 5 or 6, or on both.
E) Tune SQL from the BATCH service programs because they may benefit from SQL tuning.

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

問題與答案：

問題 #1 答案： B,C,D

問題 #2 答案： D

問題 #3 答案： D

問題 #4 答案： A,E

問題 #5 答案： A,B,D