Free Oracle 1Z0-084 Exam Questions

Become Oracle Certified with updated 1Z0-084 exam questions and correct answers

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Total 378 Questions | Updated On: Nov 14, 2024

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Question 1

Which of the following statements about Oracle Database 19c performance tuning is true?

A : tomatic Memory Management (AMM) is a recommended approach for managing memory

B : atistics Gathering should be performed manually on a regular basis

C : tting a fixed SGA size is a best practice for optimal performance

D : acle Real Application Testing (RAT) can be used to analyze the impact of system changes

Answer: D

Question 2

Which statement regarding SQL Plan Management (SPM) is true?

A : SPM automatically creates and maintains execution plans for SQL statements.

B : M requires the OPTIMIZER_FEATURES_ENABLE initialization parameter to be set to the current Oracle Database release level.

C : M captures execution plans and uses them to compare with new plans generated for the same SQL statement.

D : M automatically updates execution plans based on changes in the database environment.

Answer: C

Question 3

What is the purpose of the background process LRUW in Oracle Database 19c memory management?

A : write dirty buffers to disk

B : age non-dirty buffers

C : alert the memory manager when there is not enough free memory

D : To allocate shared memory for background processes

Answer: B

Question 4

Which tool can be used to identify inefficient SQL statements and tune them for improved performance?

A : L*Plus

B : R Report

C : acle Enterprise Manager

D : plain Plan

Answer: D

Question 5

Accessing the SALES tables causes excessive db file sequential read wait events. Examine this AWR except:

Now, examine these attributes displayed by querying dba_tables:

Finally, examine these parameter settings:

Which two must both be used to reduce these excessive waits?

A : Partition the SALES table.

B : Increase PCTFREE for the SALES table.

C : Re-create the SALES table.

D : Compress the SALES table.

E : Coalesce all sales table indexes.

Answer: A,D

Page: 1 / 76

Total 378 Questions | Updated On: Nov 14, 2024

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