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Oracle 1Z0-048 Exam Syllabus Topics:

Oracle Database 10g R2: Administering RAC Sample Questions:

Question 1

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

Question 2

To install Oracle Database 10g RAC on a UNIX platform, which four directories will you identify for use? (Choose four.)

A. CRS home directory (ORA_CRS_HOME)
B. Oracle base directory (ORACLE_BASE)
C. Oracle home directory (ORACLE_HOME)
D. NET_ADMIN directory
E. Oracle inventory directory
F. group services directory (GSDJHOME)

Question 3

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

Question 4

You have a four-node cluster with instances RDBD1, RDBD2, RDBD3, and RDBD4. While evaluating statspack reports, you find nq: TX- index contention on page one under the category op 5 Timed Events.
Further study finds an unusually high number of c buffer busy waits in the Wait Events section. Checking the Instance Activity Stats section, you see an unusually high value for eaf Node Splits. Using v$segment_statistics, you identify that the top segment with c buffer busy waits is the index prooducts_pk, which obtains the primary key from a sequence. You wish to present alternative solutions to the team to help reduce contention.
Which three actions would you recommend to reduce the overheads? (Choose three.

A. Encourage shorter transactions.
B. Increase the sequence cache size if retaining the sequence.
C. Re-create the index as a global hash partitioned index.
D. Re-create the table using a natural key instead of a surrogate key.
E. Set fast_start_mttr_target to a higher value.
F. Set _lm_msg_batch_size to a higher value.

Question 5

Which two statements regarding Oracle Clusterware are correct? (Choose two.)

A. The Oracle9i srvConfig.loc file still exists for backward compatibility in Oracle Database 10g.
B. The installation of Oracle Clusterware is not necessary if you have already installed vendor-specific clusterware.
C. The Oracle Database 10g CRS stack is compatible with Oracle 9i Group Services (GSD) processes.
D. The Oracle Database 10g version of the srvConfig.loc file is the ocr.loc file.

Solutions: