Omgzlook's practice questions and answers about the Oracle certification 1z0-070 Simulator Free exam is developed by our expert team's wealth of knowledge and experience, and can fully meet the demand of Oracle certification 1z0-070 Simulator Free exam's candidates. From related websites or books, you might also see some of the training materials, but Omgzlook's information about Oracle certification 1z0-070 Simulator Free exam is the most comprehensive, and can give you the best protection. Candidates who participate in the Oracle certification 1z0-070 Simulator Free exam should select exam practice questions and answers of Omgzlook, because Omgzlook is the best choice for you. Many people who have passed some IT related certification exams used our Omgzlook's training tool. Our Omgzlook expert team use their experience for many people participating in Oracle certification 1z0-070 Simulator Free exam to develope the latest effective training tools, which includes Oracle 1z0-070 Simulator Free certification simulation test, the current exam and answers. I wish you good luck.
Oracle Exadata 1z0-070 But pass this test will not be easy.
Before you decide to buy, you can try a free trial version, so that you will know the quality of the Omgzlook's Oracle 1z0-070 - Oracle Exadata X5 Administration Simulator Free exam training materials. The training materials can help you pass the certification. Dear candidates, have you thought to participate in any Oracle New 1z0-070 Exam Experience exam training courses? In fact, you can take steps to pass the certification.
Come on, you will be the next best IT experts. If you are still troubled for the Oracle 1z0-070 Simulator Free certification exam, then select the Omgzlook's training materials please. Omgzlook's Oracle 1z0-070 Simulator Free exam training materials is the best training materials, this is not doubt.
Oracle 1z0-070 Simulator Free - We can make you have a financial windfall.
Are you worrying about how to pass Oracle 1z0-070 Simulator Free test? Now don't need to worry about the problem. Omgzlook that committed to the study of Oracle 1z0-070 Simulator Free certification exam for years has a wealth of experience and strong exam dumps to help you effectively pass your exam. Whether to pass the exam successfully, it consists not in how many materials you have seen, but in if you find the right method. Omgzlook is the right method which can help you sail through Oracle 1z0-070 Simulator Free certification exam.
We can guarantee that you can pass the Oracle 1z0-070 Simulator Free exam the first time. If you buy the goods of Omgzlook, then you always be able to get newer and more accurate test information.
1z0-070 PDF DEMO:
QUESTION NO: 1
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: 2
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
QUESTION NO: 3
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: 4
You plan to migrate a database supporting both DSS and OLTP workloads to your new X5
Database Machine.
The workloads contain many complex aggregating functions and expensive joins on large partitioned tables in the DSS workload and indexed access for OLTP workloads.
Which three benefits accrue as a result of this migration?
A. Superior flash cache compression technique
B. Superior compression capability designed specifically for archival data
C. Superior compression capability designed specifically for OLTP workloads
D. Cell offload processing for indexed-organized table access
E. Superior compression capability designed specifically for data warehouse tables
F. Columnar storage capability for data in row major data blocks that is held in flash cache
Answer: B,C,E
Explanation:
There are 6 different kinds of Table Data Compression methods:
QUESTION NO: 5
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.
What's more, what make you be rest assured most is that we develop the exam software which will help more candidates get PMI DASSM exam certification. Dell D-RPVM-A-01 - How do you want to prove your ability? More and more people prove themselves by taking IT certification exam. Microsoft MB-920 - The empty promise is not enough. Instead of wasting your time on preparing for Splunk SPLK-5001 exam, you should use the time to do significant thing. Microsoft AI-900-CN PDF file is the common version which many candidates often choose.
Updated: May 28, 2022