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Oracle 1Z0-048 Exam Syllabus Topics:

Oracle Database 10g R2: Administering RAC Sample Questions:

Question 1

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

Question 2

According to the Maximum Availability Architecture, which case is best?

A. Run two identical sites with a primary RAC database on the first site, and RAC physical and logical standby databases on the second site.
B. Run two identical sites with a primary RAC database on the first site, and only a RAC logical standby database on the second site.
C. Run two identical sites with a primary RAC database on the first site, and non-RAC physical and logical standby databases on the second site.
D. Run two identical sites with a primary RAC database on the first site, and only a RAC physical standby database on the second site.

Question 3

According to the Maximum Availability Architecture, which case is best?

A. Run two identical sites with a primary RAC database on the first site, and RAC physical and logical standby databases on the second site.
B. Run two identical sites with a primary RAC database on the first site, and only a RAC logical standby database on the second site.
C. Run two identical sites with a primary RAC database on the first site, and non-RAC physical and logical standby databases on the second site.
D. Run two identical sites with a primary RAC database on the first site, and only a RAC physical standby database on the second site.

Question 4

To complete a cluster database creation, the DBA must choose the cluster database storage method. Which storage choice is not correct? (Choose the incorrect one.)

A. Standard UNIX file system
B. Supported SAN/NAS storage
C. Raw Devices
D. Automatic Storage Management (ASM)
E. Cluster File System

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

Solutions: