Goldmile-Infobiz에서 발췌한 Oracle인증 1z1-070덤프공부문제덤프는 전문적인 IT인사들이 연구정리한 최신버전 Oracle인증 1z1-070덤프공부문제시험에 대비한 공부자료입니다. Oracle인증 1z1-070덤프공부문제 덤프에 있는 문제만 이해하고 공부하신다면Oracle인증 1z1-070덤프공부문제시험을 한방에 패스하여 자격증을 쉽게 취득할수 있을것입니다. Oracle 1z1-070덤프공부문제 시험문제가 변경되면 제일 빠른 시일내에 덤프를 업데이트하여 최신버전 덤프자료를Oracle 1z1-070덤프공부문제덤프를 구매한 분들께 보내드립니다. 시험탈락시 덤프비용 전액환불을 약속해드리기에 안심하시고 구매하셔도 됩니다. Goldmile-Infobiz덤프로 자격증취득의 꿈을 이루세요.
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Pss4Test Oracle 1z1-070 - Oracle Exadata X5 Administration덤프공부문제덤프를 결제하면 바로 사이트에서Oracle 1z1-070 - Oracle Exadata X5 Administration덤프공부문제덤프를 다운받을수 있고 구매한Oracle 1z1-070 - Oracle Exadata X5 Administration덤프공부문제시험이 종료되고 다른 코드로 변경되면 변경된 코드로 된 덤프가 출시되면 비용추가없이 새로운 덤프를 제공해드립니다. Goldmile-Infobiz에서 판매하고 있는 Oracle 1z1-070 Dumps인증시험자료는 시중에서 가장 최신버전으로서 시험적중율이 100%에 가깝습니다. Oracle 1z1-070 Dumps덤프자료를 항상 최신버전으로 보장해드리기 위해Oracle 1z1-070 Dumps시험문제가 변경되면 덤프자료를 업데이트하도록 최선을 다하고 있습니다.
때문에 많은 IT인증시험준비중인분들에세 많은 편리를 드릴수 있습니다.100%정확도 100%신뢰.여러분은 마음편히 응시하시면 됩니다. Goldmile-Infobiz는IT업계전문가들이 그들의 노하우와 몇 년간의 경험 등으로 자료의 정확도를 높여 응시자들의 요구를 만족시켜 드립니다. 우리는 꼭 한번에Oracle 1z1-070덤프공부문제시험을 패스할 수 있도록 도와드릴 것입니다.
Oracle 1z1-070덤프공부문제 - 여러분이 성공을 위한 최고의 자료입니다.
Goldmile-Infobiz 에서는 최선을 다해 여러분이Oracle 1z1-070덤프공부문제인증시험을 패스하도록 도울 것이며 여러분은 Goldmile-Infobiz에서Oracle 1z1-070덤프공부문제덤프의 일부분의 문제와 답을 무료로 다운받으실 수 잇습니다. Goldmile-Infobiz 선택함으로Oracle 1z1-070덤프공부문제인증시험통과는 물론Goldmile-Infobiz 제공하는 일년무료 업데이트서비스를 제공받을 수 있으며 Goldmile-Infobiz의 인증덤프로 시험에서 떨어졌다면 100% 덤프비용 전액환불을 약속 드립니다.
Goldmile-Infobiz은 아주 알맞게 최고의Oracle 1z1-070덤프공부문제시험문제와 답 내용을 만들어 냅니다. 덤프는 기존의 시험문제와 답과 시험문제분석 등입니다.
1z1-070 PDF DEMO:
QUESTION NO: 1
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: 2
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: 3
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: 4
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: 5
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
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Updated: May 28, 2022