Learning our 1z1-070 Exam Dumps Demo study quiz can also be a pleasant process. The saved time can be used to go sightseeing or have a rest. If you study on our test engine, your preparation time of the 1z1-070 Exam Dumps Demo guide braindumps will be greatly shortened. Tens of thousands of our loyal customers are benefited from our 1z1-070 Exam Dumps Demo study materials and lead a better life now after they achieve their 1z1-070 Exam Dumps Demo certification. Life is full of ups and downs. To other workers who want to keep up with the time and being competent in today’s world, you are also looking for some effective 1z1-070 Exam Dumps Demo exam prep as well.
Oracle Exadata 1z1-070 The data are unique-particular in this career.
Our 1z1-070 - Oracle Exadata X5 Administration Exam Dumps Demo real exam is written by hundreds of experts, and you can rest assured that the contents of the 1z1-070 - Oracle Exadata X5 Administration Exam Dumps Demo study materials are contained. Stop dithering and make up your mind at once, Latest Test 1z1-070 Simulations test prep will not let you down. We abandon all obsolete questions in this latest Latest Test 1z1-070 Simulations exam torrent and compile only what matters toward actual real exam.
You can see that so many people are already ahead of you! You really don't have time to hesitate. If you really want to improve your ability, you should quickly purchase our 1z1-070 Exam Dumps Demo study braindumps!
Oracle 1z1-070 Exam Dumps Demo - And you can choose the favorite one.
In today's society, many people are busy every day and they think about changing their status of profession. They want to improve their competitiveness in the labor market, but they are worried that it is not easy to obtain the certification of 1z1-070 Exam Dumps Demo. Our study tool can meet your needs. Once you use our 1z1-070 Exam Dumps Demo exam materials, you don't have to worry about consuming too much time, because high efficiency is our great advantage. You only need to spend 20 to 30 hours on practicing and consolidating of our 1z1-070 Exam Dumps Demo learning material, you will have a good result. After years of development practice, our 1z1-070 Exam Dumps Demo test torrent is absolutely the best. You will embrace a better future if you choose our 1z1-070 Exam Dumps Demo exam materials.
Many exam candidates are uninformed about the fact that our 1z1-070 Exam Dumps Demo preparation materials can help them with higher chance of getting success than others. It is all about efficiency and accuracy.
1z1-070 PDF DEMO:
QUESTION NO: 1
Which two completely prevent a Smart Scan from occurring?
A. performing a minimum or maximum function on an indexed column
B. querying a table containing a JSON column
C. referencing more than 255 columns form an OLTP compressed table in a query
D. performing a Fast Full Index scan on a reverse key index
E. querying a table containing many migrated rows
F. querying a table containing many chained rows
Answer: C,E
Explanation:
B: Migrated Rows is a special case of chained rows. Migrated rows still affect performance, as they do in conventional storage situations, but with the additional overhead of reducing the beneficial effects of "Smart Scan" in addition to increasing the number of I/Os E: Smart Scans - broadly speaking and ignoring edge cases - can only transport a maximum of 254 columns from a single (non-HCC) segment.
Requesting more columns will simply disable Smart Scans for that segment.
An interesting limitation to Exadata Smart Scans - if more than 254 columns from a table (not HCC compressed, more on that in moment) need to be projected, Smart Scans for that particular segment will be disabled and Exadata will fall back to conventional I/O. This means that the number of columns in the projection clause can make a significant difference to performance, since only Smart
Scans allow taking advantage of offloading and particularly avoiding I/O via Storage Indexes.
QUESTION NO: 2
Which three statements are true about bulk data loading capabilities in an X5 Database
Machine environment?
A. DBFS may be used if Exadata-based shared storage is required to stage data before bulk loading into a database.
B. DBFS must use the DBFS_DG diskgroup for any DBFS store.
C. DBFS must be used to bulk load data into a production database on the Database Machine.
D. DBFS must be used to have a POSIX-compliant shared storage solution that is accessible from the database servers on a Database Machine.
E. ACFS may use the DBFS_DG diskgroup to contain the ADVM volume file.
F. ACFS may be used if Exadata-based shared storage is required to stage data before bulk loading into a database.
G. ACFS must be used to have a POSIX-compliant shared storage solution that is accessible from the database servers on a Database Machine.
Answer: A,C,D
Explanation:
External tables on DBFS file-systems provide the probably the most high-performance way to bulk load data into your database.
Bulk Data Loading
Describe the various options for staging data to be bulk loading into Database Machine Configure the
Database File System (DBFS) feature for staging input data files Use external tables based on input data files stored in DBFS to perform high-performance data loads
QUESTION NO: 3
Which two statements are true about data paths used during RMAN backup and restore operations when media management servers use InfiniBand to connect to an X5 Database Machine?
A. During backups, data blocks are read by cellsrv and sent directly to the media manager to be written to media.
B. During backups, data blocks are read by cellsrv and sent to a database server, which sends the blocks to the media manager to be written to media.
C. During backups, data blocks are always read from Smart Flash Cache by cellsrv.
D. During restores, data blocks read from the media are sent to a database server that sends the blocks to cellsrv to be written.
E. During restores, data blocks read from the media are sent directly to cellsrv to be written.
Answer: A,E
Explanation:
The fastest database backup is achieved via InfiniBand.
RMAN does not back up directly to tape. However, it will integrate with media management software such as Oracle Secure Backup and utilize their capabilities to manage tape libraries.
Exadata Database Machine: The Database Machine contains the databases that need to be backed up. Oracle RMAN is the only mechanism to back up the databases that utilize Exadata Storage Servers as the storage. RMAN processes run on the database servers and interact with the Oracle Secure
Backup (OSB) agent, which further interacts with the media management software and enables
RMAN to communicate with the tape library.
References:
http://apprize.info/data/oracle_4/6.html
QUESTION NO: 4
Which three statements are true about Recovery Manager (RMAN) daily differential incremental backup strategies on an X5 Database Machine for a database having 25% or more of its blocks modified each day and which has an 8 k block size?
A. For level-0 backups, Block Change Tracking (BCT) is most beneficial when more than 25 percent of the blocks have changed since the last backup.
B. cellsrv returns only blocks that have changed since the last backup.
C. Enabling Block Change Tracking (BCT) on the database can result in a reduction of physical I/O on the cells during incremental backups.
D. For level-1 backups, Block Change Tracking (BCT) is most beneficial when more than 25 percent of the blocks have changed since the last backup.
E. Fast incremental backups when 50% or more of the blocks have changed since the last backup, will run as slowly as normal incremental backup.
F. Enabling Block Change Tracking (BCT) on the database can result in reduced consumption of storage network bandwidth.
Answer: B,C,E
Explanation:
A: Fast Incremental backups is possible with Block change tracking, which is initially introduced from version 10.2 onwards, by this tool it's very useful to reduce the RMAN incremental backup duration.
If the changes are something around 20% then in this situation BCT helps a lot.
C: Exadata Storage Server offload capability combined with RMAN block change tracking will efficiently perform large I/Os at the storage-tier level, returning only individual changed blocks for incremental backups and increasing the backup performance of the system.
Note: Level 1 backup: A level 1 backup includes only those blocks that have been changed since the
"parent" backup was taken. Remember a parent backup may be either a level 0 or a level 1 backup.
Block change tracking allows indeed the highest benefit for databases where the changes are not so high, Level 0 backup: A level 0 incremental backup is physically identical to a full backup and it includes every data block in the file except empty blocks. The only difference is that the level 0 backup is recorded as an incremental backup in the RMAN repository, so it can be used as the parent for a level 1 backup.
References:
http://www.dba-oracle.com/t_rman_backup_types.htm
http://www.oracle.com/technetwork/database/availability/maa-tech-wp-sundbm-backup-11202-
183503.pdf
https://www.toadworld.com/platforms/oracle/w/wiki/11124.fast-incremental-backups-active-data- guard
QUESTION NO: 5
You plan to migrate an existing production database supporting online transaction processing
(OLTP) workloads to an X6 Exadata Database Machine.
The database currently supports an application requiring fast response times to satisfy stringent business requirements, and most of the application queries use indexed access to tables.
For which two cases would you consider dropping indexes that are not used for constraints after the migration to assure that Smart Scans occur?
A. if Smart Scan performs better that any type of index scan on the corresponding table.
B. if Smart only occur instead of index range scans on the corresponding table.
C. if Smart only occur instead of index skip scans on the corresponding table.
D. if Smart Scans performs equally well to any type of index scan on the corresponding table.
Answer: A,B
During the exam, you would be familiar with the questions, which you have practiced in our Adobe AD0-E136 question dumps. And our website has already became a famous brand in the market because of our reliable EnterpriseDB PostgreSQL-Essentials exam questions. We will provide high quality assurance of CIPS L5M15 exam questions for our customers with dedication to ensure that we can develop a friendly and sustainable relationship. SAP C-BCBTM-2509 - For more textual content about practicing exam questions, you can download our products with reasonable prices and get your practice begin within 5 minutes. As for your concern about the network virus invasion, ISACA CRISC learning materials guarantee that our purchasing channel is absolutely worthy of your trust.
Updated: May 28, 2022