1Z0-082 - Oracle Database Administration I Oracle Database Architecture Questions and Answers

Question 1

An Oracle database server consists of a database and at least one instance. What is the fundamental difference between an Oracle database instance and an Oracle database?

Accepted Answer

The instance is a set of memory structures (SGA and PGA) and background processes, while the database consists of the physical data files, control files, and redo log files on disk.

Answer

The instance consists of physical files on disk, while the database is a set of memory structures and background processes.

Answer

The instance and the database are two terms for the same set of files and memory structures.

Answer

The instance is only the background processes, and the database is only the System Global Area (SGA).

Question 2

A database administrator is reviewing the mandatory background processes of a healthy Oracle 19c database instance. Which background process is responsible for writing modified data blocks from the database buffer cache to the data files on disk?

Accepted Answer

DBWn (Database Writer)

Answer

LGWR (Log Writer)

Answer

CKPT (Checkpoint)

Answer

SMON (System Monitor)

Question 3

Which of the following is considered a logical storage structure in an Oracle Database?

Accepted Answer

Tablespace

Answer

Data file

Answer

Control file

Answer

Operating System block

Question 4

A user connects to an Oracle database and executes a complex query that requires sorting a large amount of data. In which memory structure would the memory for this sort operation typically be allocated?

Accepted Answer

Program Global Area (PGA)

Answer

Shared Pool

Answer

Database Buffer Cache

Answer

Redo Log Buffer

Question 5

A DBA needs to identify the names and locations of all data files and redo log files associated with the database. Which physical component of the Oracle Database architecture contains this critical structural information?

Accepted Answer

Control File

Answer

Parameter File (PFILE/SPFILE)

Answer

Data Dictionary

Answer

Password File

Question 6

Which component of the System Global Area (SGA) is used to store the most recently used SQL and PL/SQL statements, as well as data dictionary information?

Accepted Answer

Shared Pool

Answer

Database Buffer Cache

Answer

Large Pool

Answer

Java Pool