Most Recent Oracle 1Z0-078 Exam Questions & Answers

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 Jan 21, 2025.

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Question No. 1

Which task must be performed before running the OPatch utility to patch Oracle Grid Infrastructure 19c?

AUpdate the path environment variable on each cluster node to point to the 50RACLE HOME/OPacch directory

BStage the patch on the cluster node where the OPacch utility will be executed.

CUpdate the path environment variable on the node where you will run the OPatch utility to point to the SORacle HOME/OPacch directory.

DStage the patch on all cluster nodes.

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Correct Answer: D

Question No. 2

Which three statements are true about diagnostic reporting for the OCR and OLR files? (Choose three.)

AThe OCRCHECK utility can check the OLR in an online fashion with the clusterware running on all nodes.

BThe OCRCONFIG utilty can be used to repair a corrupt OCR file in an online fashion with the clusterware running on all nodes.

CThe CLUVFY utility can check the integrity of the OCR but not the OLR.

DThe OCRDUMP utility can dump specific keys from the OLR in an online fashion with the clusterware running on all nodes.

EThe OCRDUMP utility can dump specific keys from the OCR in an online fashion with the clusterware running on all nodes.

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Correct Answer: A, D, E

Question No. 3

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. 4

You must deploy several Oracle 19c databases on an Oracle Grid Infrastructure Managed Cluster, and are required to have the ability to perform these actions without down time:

1. Apply a Grid Infrastructure interim patch.

2. Apply a Grid Infrastructure Patch Set Update (PSU).

3. Apply a database on-line patch.

4. Apply a Grid Infrastructure patchset.

5. Apply a database patchset.

6. Upgrade Grid Infrastructure from one release to another.

7. Upgrade databases from one release to another.

Your plan is to perform these tasks:

1. Install and configure Oracle Grid Infrastructure on a local file system.

2. Install Oracle Database software on an ACFS file system.

3. Create several RAC One Node databases.

Which of the seven requirements are met by your plan?

A1, 2, 3, 4, 5 and 6.

B2, 3, 4 and 6.

C1, 2, 3 and 4.

D2, 3, 4, 5 and 6.

E1, 2, 3, 4 and 6.

F1, 2, 3, 4, 5, 6 and 7.

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Correct Answer: C

Question No. 5

You administer a RAC database that currently runs on a four-node cluster but which has three instances.

Which two statements are always true about redo logs for this RAC database? (Choose two.)

AA thread of redo must be created before starting a fourth instance if a thread is not already available.

BA thread of redo is automatically dropped when an instance is removed from a RAC database by using SRVCTL.

CAll the instances must have the same number of redo log groups and each group must have the same number of redo log members.

DA redo log group added using alter database add logfile without the instance clause is added to each instance.

EA thread of redo must contain at least two log groups before it can be enabled.

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Correct Answer: A, E

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