So accordingly, we offer three versions of free demos for you to download. Our 1z1-070 Test Objectives Pdf practice questions are on the cutting edge of this line with all the newest contents for your reference. Free demos are understandable and part of the 1z1-070 Test Objectives Pdf exam materials as well as the newest information for your practice. It is developed and maintained by our company’s professional personnel and is dedicated to provide the first-tier service to the clients. Our system updates the 1z1-070 Test Objectives Pdf exam questions periodically and frequently to provide more learning resources and responds to the clients’ concerns promptly. You can feel assertive about your exam with our 100 guaranteed professional 1z1-070 Test Objectives Pdf practice engine for you can see the comments on the websites, our high-quality of our 1z1-070 Test Objectives Pdf learning materials are proved to be the most effective exam tool among the candidates.
Oracle Exadata 1z1-070 In short, we live in an age full of challenges.
Last but not the least, they help our company develop brand image as well as help a great deal of exam candidates pass the exam with passing rate over 98 percent of our 1z1-070 - Oracle Exadata X5 Administration Test Objectives Pdf real exam materials. We believe that you must have paid more attention to the pass rate of the Oracle Exadata X5 Administration exam questions. If you focus on the study materials from our company, you will find that the pass rate of our products is higher than other study materials in the market, yes, we have a 99% pass rate, which means if you take our the Valid 1z1-070 Exam Camp Questions study dump into consideration, it is very possible for you to pass your exam and get the related certification.
Because our study material is prepared strictly according to the exam outline by industry experts, whose purpose is to help students pass the exam smoothly. As the authoritative provider of 1z1-070 Test Objectives Pdf test guide, we always pursue high passing rates compared with our peers to gain more attention from potential customers. In order to gain the trust of new customers, 1z1-070 Test Objectives Pdf practice materials provide 100% pass rate guarantee for all purchasers.
Oracle 1z1-070 Test Objectives Pdf - It will not cause you any trouble.
Our company has become the front-runner of this career and help exam candidates around the world win in valuable time. With years of experience dealing with 1z1-070 Test Objectives Pdf exam, they have thorough grasp of knowledge which appears clearly in our 1z1-070 Test Objectives Pdf exam questions. All 1z1-070 Test Objectives Pdf study materials you should know are written in them with three versions to choose from: the PDF, Software and APP online versions.
But in realistic society, some candidates always say that this is difficult to accomplish. Therefore, 1z1-070 Test Objectives Pdf certification has become a luxury that some candidates aspire to.
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
And during preparing for BCS PC-BA-FBA-20 exam you can demonstrate your skills flexibly with your learning experiences. These three versions of our Cisco 300-715 practice engine can provide you study on all conditions. Most people define Salesforce Experience-Cloud-Consultant study tool as regular books and imagine that the more you buy, the higher your grade may be. Our Fortinet FCSS_NST_SE-7.6 study materials are different from common study materials, which can motivate you to concentrate on study. VMware 2V0-13.25 - They are unsuspecting experts who you can count on.
Updated: May 28, 2022