Correct Answer: BD

Explanation:

The rescue procedure is necessary when system disks fail, the operating system has a corrupt file system,

or there was damage to the boot area. If only one system disk fails, then use CellCLI commands to

recover. In the rare event that both system disks fail simultaneously, you must use the Exadata Storage

Server rescue functionality provided on the Oracle Exadata Storage Server Software CELLBOOT USB

flash drive.

Incorrect Answers:

E, F: If only one system disk fails, then use CellCLI commands to recover.

References: http://docs.oracle.com/cd/E80920_01/DBMMN/maintaining-exadata-storageservers.htm#GUID-710814E7-4691-49EE-95AD-726D2D6C5BFE

Correct Answer: ACF

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

Correct Answer: C

Explanation:

The cellinit.ora file is host-specific, and contains all database IP addresses that connect to the storage

network used by Oracle Exadata Storage Servers. This file must exist for each database that connect to

Oracle Exadata Storage Servers.

The cellinit.ora file contains the database IP addresses.

The cellip.ora file contains the storage cell IP addresses.

Both files are located on the database server host.

References: http://docs.oracle.com/cd/E80920_01/SAGUG/exadata-storage-serverconfiguring.htm#SAGUG20369

Correct Answer: ACD

Explanation:

Oracle Exadata Deployment Assistant has two main phases

1.

the customer provides naming, DNS, NTP, and networking details. This information is collected using the Oracle Exadata Deployment Assistant user interface. A configuration file is generated

2.

the configuration file is pushed to the database node, and the validation and installation is

Oracle Exadata Deployment Assistant can configure Oracle Exadata Database Machine, Recovery Appliance, or Oracle SuperCluster.

References:

https://docs.oracle.com/cd/E55822_01/AMOGD/configurator.htm#AMOGD22056 https://www.toadworld.com/platforms/oracle/w/wiki/11469.oracle-exadata-deployment-assistance-oeda

Correct Answer: BE

Explanation:

Ethernet switch for administrative connectivity to servers in the Database Machine

Connect any combination of up to 18 Exadata Database Machine racks or Exadata Storage Expansion

Racks via the InfiniBand fabric. Larger Configurations can be built with external InfiniBand switches.

Connected racks can be any combination of v2, X2, X3 or X4 generation hardware.

Reference: https://www.oracle.com/technetwork/database/exadata/exadata-storage-expansion-x5-2-ds-2406252.pdf