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Vendor Oracle
Exam Code 1z0-338
Full Exam Name Oracle Exadata Database Machine and Cloud Service 2017 Implementation Essentials
Certification Name Oracle Engineered Systems
Technology exadata

♥ 2018 Valid 1z0-338 Exam Questions ♥

1z0-338 exam questions, 1z0-338 PDF dumps; 1z0-338 exam dumps:: (72 Q&A) (New Questions Are 100% Available! Also Free Practice Test Software!)

Latest and Most Accurate Oracle 1z0-338 Exam Questions:

Question: 21

How does partition pruning, a 11gR2 database feature, help to improve performance on an Exadata Database Machine?

A. Partition pruning allows you to reduce a 5 TB I/O operation to a much smaller I/O operation and therefore, enables a much faster return of information.
B. Using partition pruning can force the optimizer to use that method instead of Smart Scan. Partitioning in Exadata should be used wisely
C. Partition pruning is not a supported option in the 11gR2 database code that runs on an Exadata Machine, due to issues with Cost Based Optimizer plans.
D. Partition pruning allows you to reduce the size of the physical table by reducing fragmentation within the individual tables.
E. Partition pruning allows you to reduce a 5 TB I/O operation to a larger I/O operation and therefore, forces the use of the Smart Scan technology.

Answer: A

Question: 22

Identify the correct steps required to upgrade a 1/8th rack of Exadata to a 1/4th rack.

A. Remove the doors of the 1/8th rack.
Add the new servers.
Cable the Database Servers in the rack.
Cable the Exadata Storage Servers in the rack.
Close the rack.
B. Activate all cores by using a software command.
Activate all hard drives and flash drives.
Create the grid disks.
Expand the Oracle ASM diskgroups.
Review the new configuration.
C. Remove the doors of the 1/8th rack.
Add an additional Sun Datacenter InfiniBand Switch.
Add the new servers.
Cable the Database Servers in the rack.
Cable the Exadata Storage Servers in the rack.
Close the rack.
Configure the new hardware.
D. Activate all cores by using a software command.
Activate all hard drives and flash drives.

Answer: B

Question: 23

A customer has three databases named CC. FIN, and DW. The CC database is for their CallCenter. Even a slight decrease in the response time of the database would mean more people “on hold” in their data center. The orders received through the CallCenter are stored in the Finance (FIN) database. Both databases, CC and FIN, serve as sources for the Data Warehouse (DW) database. All databases use the same Automatic Storage Management (ASM) diskgroup and therefore, the same physical disks on Exadata storage. The customer wants to dynamically control the resources that are available for the CallCenter database because this has direct impact on their operations?
Which option should be implemented?

A. DBRM on the CC database
B. DBRM on all the databases
C. IORM, because DBRM cannot be changed for an existing session

Answer: B

Question: 24

Consider the following software changes that are performed manually on a Linux server:
1. Changes for Linux kernel firewall configuration
2. Changes for custom performance monitoring tools
3. Changes for security scan tools
4. Changes for Linux system performance optimization
Which of the software changes listed are permitted on Exadata Storage Servers?

A. 1, 2, 3, and 4
B. only 3 ‘
C. none
D. only 2
E. only 1 and 2
F. only 2 and 3

Answer: C

1: The Storage Server Patch is responsible for keeping our cell nodes always up-to-date, fixing possible problems, and this patch includes different component patches, like kernel patches, firmware, operation system, etc… for the Storage Server.
3,4: security scan tools changes and Linux system performance optimization changes would be on the database server.

Question: 25

Which two statements are true about enabling write-back flash cache?

A. When enabling write-back flash cache in a non rolling manner, it is important to ensure that asmdeactivatonoutcome is set to YES and asmModestatus is set to ONLINE for all grid disks.
B. Before using write-back flash cache, you need to verify the minimum required versions.
C. Before write back-flash cache is enabled, you need to drop the Flash Cache first.
D. The setting flashCacheMode should be set to writeback by updating cellinit.ora and restarting cellsrv.
E. When enabling write-back flash cache in a rolling manner, dcli should be used to inactivate the grid disks on all cells first.

Answer: B, C

B: Exadata storage version is the minimum version required to use this write back flash cache option.
C: Steps for Enabling Write back flash cache:
First of all, you don’t need the stop CRS or database (This is ROLLING method) ,you can do it cell by cell.
* drop flashcache
* Be sure asmdeactivationoutcome is YES is before disabling grid disk

Question: 26

Consider the following setup:
User A1 belongs to resource group High on Database A.
User B2 belongs to resource group Low on Database B.
User C3 is a user on Database C without any DBRM setup.
DBRM setup:
Database A: Resource group High gets 80% and Low gets 20%.
Database B: Resource group High gets 60% and Low gets 40%.
IORM setup:
Database A: Share=20, limit=5
Database B: Share=30, limit=10
Database C: 5 shares
Total number of shares in the IORM setup = 100
What percent of I/O will each database user theoretically be using when the Exadata storage unit I/O throughout is used 100% and no other databases but A, B, and C are running?

A. Al = 36%, B2=18%, and C3=9%
B. Al = 33%, B2=33%, and C3=33%
C. AI = 10%, B2=5%, and C3=20%
D. Al = 8%, B2=12%, and C3=5%
E. Al = 5%, B2=10%, and C3=85%

Answer: E

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