Most Recent Oracle 1Z0-078 Exam Dumps

Prepare for the Oracle Database 19c: RAC, ASM, and Grid Infrastructure Administration exam with our extensive collection of questions and answers. These practice Q&A are updated according to the latest syllabus, providing you with the tools needed to review and test your knowledge.

QA4Exam focus on the latest syllabus and exam objectives, our practice Q&A are designed to help you identify key topics and solidify your understanding. By focusing on the core curriculum, These Questions & Answers helps you cover all the essential topics, ensuring you're well-prepared for every section of the exam. Each question comes with a detailed explanation, offering valuable insights and helping you to learn from your mistakes. Whether you're looking to assess your progress or dive deeper into complex topics, our updated Q&A will provide the support you need to confidently approach the Oracle 1Z0-078 exam and achieve success.

The questions for 1Z0-078 were last updated on May 1, 2025.

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Question No. 1

Which statement describes the usage of Dynamic Service Fallback in Oracle RAC 19c?

ADynamic Service Fallback allows a service to relocate to an available instance when the service is stopped on a preferred instance.

BDynamic Service Fallback allows a service to fall back to a preferred instance when the available instance performance falls below a specified threshold after it was failed over to an available instance.

CTo enable Dynamic Service Fallback, you should specify the level of performance of a preferred instance for a service to be relocated to an available instance by setting the -fallback attribute of a service to 'Low, Medium, or High'.

DDynamic Service Fallback allows a service to fall back to a preferred instance when it becomes available after it was failed over to an available instance.
Dynamic Service Fallback allows a service to fall back to a preferred instance when it becomes available after it was failed over to an available instance. This is true because Dynamic Service Fallback is a new feature in Oracle RAC 19c that enables a dynamic database service to automatically relocate to a preferred instance when it is restored, after the service was failed over to an available instance due to the failure of the last preferred instance. This feature improves the availability and performance of the service by minimizing the manual intervention and the number of failovers.To enable Dynamic Service Fallback, you should specify the -failback option for the service as YES when using SRVCTL or DBCA12.Reference:
: Oracle Database 19c Release 19.3 New Features, Dynamic Services Fallback Option1
: Automatic Failback of a Service in a Oracle-19c-RAC-Database2

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Correct Answer: D

Question No. 2

Which two benefits are obtained by using Affinity to reduce global resource contention? (Choose two.)

AOracle RAC affinity for partitioned tables routes all database requests for a partition tables to a single Oracle RAC instance leading to higher Oracle RAC performance and scalability because of improved cache locality and reduced internode synchronization and block pings of the partition tables.

BOracle RAC affinity for partitioned tables routes database requests to Oracle RAC instances in such a way that each instance always gets requests for a disjoint subset of rows in the database, this affinity leads to higher Oracle RAC performance and scalability because of improved cache locality and reduced internode synchronization and block pings.

COracle RAC affinity for partitioned tables routes database requests to all available Oracle RAC instances evenly to create a global affinity in such a way that each instance always gets an even number of requests leading to higher Oracle RAC performance by using a higher levels of available global cache to reduce global resource contention.

DTo enhance the performance of distributed transactions with applications server that provides XA affinity, you can automatically spawn new dedicated database RAC instances to isolate distributed transaction.

ETo enhance the performance of distributed transactions with applications server that provides XA affinity, you can direct all branches of a distributed transaction to a single instance in the cluster to improve cache locality and reduce internode synchronization and block pings.

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Correct Answer: A, E

Question No. 3

Which two statements are true about load balancing using a database service in a RAC environment? (Choose two.)

AClient-side connect time load balancing works only if it uses a tnsnames entry specifying load BALANCE=yes.

BServer-side connect time load balancing is done at the time of the initial connection attempt to the database service.

CServer-side load balancing connections are always distributed across instances based on the fastest response time for the service.

DClient-side connect time load balancing is done at the time of the initial connection attempt to the database service.

EIn client-side load balancing, the SCAN listener uses the Load Balancing Advisory to direct a connection request to the least loaded instance hosting the service.

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Correct Answer: B, D

Question No. 4

Which two statements are true about High Availability NFS (HANFS)? (Choose two.)

AHANFS provides high availability in case of an NFS client failure.

BHANFS' performance depends on the characteristics of the underlying ASM disks.

CHANFS does not depend on NFS services provided by the underlying operating system.

DHANFS provides high availability in case of cluster node failure.

ENFS client requests are distributed by DNS in a round-robin fashion to the cluster nodes that export the NFS

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Correct Answer: B, D

Question No. 5

Which two components must always be defined or specified by an administrator to make an application highly available using Oracle 92c Clusterware? (Choose two.)

Aan application VIP

BA Server Pool

Ca resource dependency definition

Dan application resource

Ea script agent

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Correct Answer: D, E

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