Oracle 1Z0-048 : Oracle Database 10g R2: Administering RAC

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Oracle 1Z0-048 Exam Syllabus Topics:

Oracle Database 10g R2: Administering RAC Sample Questions:

1. You decide to implement a Data Guard configuration to support a disaster recovery plan for your RAC database. Your primary database has all shared files and the flash recovery area is stored on ASM disk groups. Which three options exist for storing the data guard broker configuration files at the primary location? (Choose three.)

A) may be stored on any supported cluster file system if a cluster file system is used
B) can be stored on shared Raw Devices
C) must be stored on Oracle Cluster File System if a cluster file system is used
D) must be in the same shared ASM disk group as the Flash Recovery Area if the broker configuration files are stored in ASM disk groups.
E) can be in any shared ASM disk group
F) must be in the same shared ASM disk group as the database data files if the broker configuration files are stored in ASM disk groups

2. Richard is a senior DBA and has prepared a plan for RAC implementation in his company. Given below are some of the tasks that he would perform as part of the plan: 1) Creating the Raw Devices Mapping file 2) Creating database services 3) Binding the partitions to raw devices 4) Creating the Voting Disk file 5) Creating an initialization parameter file 6) Creating the Oracle Cluster Registry (OCR) file 7) Creating the tnsnames.ora file 8) Creating the database control file
During the creation of the RAC database, Richard can use the Database Configuration Assistant (DBCA) to perform some of these steps but not all of them. Which steps should be completed before Richard starts creating the database by using DBCA?

A) 3, 4,6,7,8
B) 2, 5,7,8
C) 1, 3,4,6
D) 2, 5,6,7,8
E) 1, 2,4,5,6,7

3. Which three storage types are suitable as a flash recovery area for an Oracle 10g RAC database? (Choose three.)

A) Cluster file system
B) Local file system
C) Shared NFS directory
D) ASM disk group
E) Raw volume

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

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

Solutions: