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Oracle 1Z0-084 Exam Dumps

Oracle 1Z0-084 Exam Dumps

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Number Of Questions: 55

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Exam Details

Exam Name:

Oracle Database 19c: Performance Management and Tuning

Exam Code:

1Z0-084

Total Questions in Exam:

55

Demo Questions

Q1. Which three types of statistics are captured by statspack with snap level 6?

A.Parent and child latches

B. Parent and child latches

C. Optimizer execution plans

D. Plan usage data

E. Enqueue statistics

F. Segment-level statistics

Correct Answer: A, E, F

Q2. Which Optimizer component helps decide whether to use a nested loop join or a hash join in an adaptive execution plan?

A.Statistics Feedback

B. SQL Plan Directives

C. Statistics Collector

D. Automatic Reoptimization

E. Dynamic Statistics

Correct Answer: C

Q3. Which two options are part of a Soft Parse operation?

A.Syntax Check

B. SQL Row Source Generation

C. SQL Optimization

D. Shared Pool Memory Allocation

E. Semantic Check

Correct Answer: E

Q4. Which two actions can cause invalidation or loss of one or more results in the SQL Query Result Cache?

A.One or more results were aged out of the result cache.

B. result_cache_max_size is set dynamically to 0.

C. A request was made by the RCBG background of a non-RAC database.

D. A request was made by the RCBG background process in a physical standby database that is opened read only and whose primary has a result cache.

E. Decreasing the value set for RESULT_CACHE_REMOTE_EXPIRATION.

Correct Answer: A, B

Q5. Which three statements are true about using the in Memory (IM) column store?

A.It does not improve performance for queries using cached results of function evaluations on columns from the same table.

B. It does not improve performance for queries that use join groups on columns from different tables.

C. It can improve OLTP workload performance by avoiding the use of indexes.

D. It does not improve performance for queries using user-defined virtual column results.

E. It does not require all database data to fit in memory to improve query performance.

F. It improves performance for queries joining several tables using bloom filter joins.

Correct Answer: C, E, F

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