Question 1

Which of the following is the best practice for improving performance when using partitioning in Oracle Database 19c?

Options :

A : Partitioning the table based on a single column that has even distribution of data

B : Partitioning the table based on a single column that has uneven distribution of data

C : Partitioning the table based on multiple columns that have even distribution of data

D : Partitioning the table based on multiple columns that have uneven distribution of data

Answer: A

Question 2

Which of the following statements is true about the optimizer index skip scan feature in Oracle Database 19c?

Options :

A : The optimizer index skip scan feature allows the optimizer to skip over one or more leading columns of an index in order to improve query performance.

B : The optimizer index skip scan feature allows the optimizer to skip over only the first column of an index in order to improve query performance.

C : The optimizer index skip scan feature allows the optimizer to scan an index in reverse order, starting from the last column instead of the first column.

D : The optimizer index skip scan feature is not available in Oracle Database 19c.

Answer: A

Question 3

Which of the following techniques is most effective for improving query performance in an Oracle database?

Options :

A : Using optimizer hints

B : Increasing the SGA size

C : Adding more indexes to the tables

D : Rewriting the SQL queries

Answer: B

Question 4

Which of the following features can be used to manage Oracle Database memory?

Options :

A : Automatic Memory Management

B : Manual Memory Management

C : Automatic Storage Management

D : Automatic Undo Management

Answer: A

Question 5

Which initialization parameter can be used to control the size of the buffer cache in Oracle Database?

Options :

A : PGA_AGGREGATE_TARGET

B : SHARED_POOL_SIZE

C : DB_CACHE_SIZE

D : SGA_TARGET

Answer: C

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