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Certifications: Oracle Engineered Systems
Exam Name: Oracle Exadata Database Machine and Cloud Service 2017 Implementation Essentials
Exam Code: 1z0-338
Total Questions: 72
♥ 2018 Valid 1z0-338 Exam Questions ♥
1z0-338 exam questions, 1z0-338 PDF dumps; 1z0-338 exam dumps:: https://www.dumpsschool.com/1z0-338-exam-dumps.html (72 Q&A) (New Questions Are 100% Available! Also Free Practice Test Software!)
Latest and Most Accurate Oracle 1z0-338 Dumps Exam Questions and Answers:
Identify the three values to which the cell_flash_cache attribute can be set.
Answer: C, D, E
There are three values the CELL_FLASH_CACHE attribute can be set to. DEFAULT specifies the cache used for a DEFAULT object is automatically managed as described in the previous section. NONE specifies that the object will never be cached. KEEP specifies the object should be kept in cache.
Note: The CELL_FLASH_CACHE can be assigned to a database table, index, partition and LOB column.
High-disk IOPS (I/Os per second) rates are leading to longer execution times.
Which three approaches would you use to improve this scenario?
A. Enable Write-Back Flash Cache due to heavy DBWR usage.
B. Enable Write-Back Flash Cache due to heavy LGWR usage.
C. Swap hard disks to High Capacity disks.
D. Tune the application to reduce I/O requests.
E. Leverage IORM to give priority to critical workloads.
Answer: B, D, E
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
D. IORM and DBRM
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 ‘
D. only 2
E. only 1 and 2
F. only 2 and 3
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.
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 188.8.131.52.1 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
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.
Database A: Resource group High gets 80% and Low gets 20%.
Database B: Resource group High gets 60% and Low gets 40%.
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%
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