1Z0-006 Oracle Architecture & Tools 2

Question 1

Which Oracle background process is responsible for writing dirty buffers from the buffer cache to data files?

Accepted Answer

DBWR

Answer

DBWR (Database Writer) moves modified (dirty) buffers from the buffer cache to the physical data files on disk.

Question 2

What is the purpose of the Oracle Redo Log Buffer?

Accepted Answer

Holds redo entries before they are written to redo log files

Answer

The Redo Log Buffer is a circular buffer in the SGA that holds redo entries (change vectors) before LGWR flushes them to the online redo log files.

Question 3

Which Oracle tool provides a graphical interface for database administration including startup, shutdown, and performance monitoring?

Accepted Answer

Enterprise Manager Database Express

Answer

Oracle Enterprise Manager Database Express is the web-based GUI tool bundled with Oracle Database for administration tasks like startup/shutdown, storage, and performance.

Question 4

What does the Oracle PMON background process do?

Accepted Answer

Cleans up failed user process resources and rolls back uncommitted transactions

Answer

PMON (Process Monitor) detects failed user processes and cleans up resources such as locks, releasing them and rolling back uncommitted transactions.

Question 5

In Oracle, what is the Shared Pool primarily used for?

Accepted Answer

Caching parsed SQL and PL/SQL code along with data dictionary information

Answer

The Shared Pool stores the Library Cache (parsed SQL/PL/SQL) and the Data Dictionary Cache (metadata), allowing reuse of parsed statements.

(1Z0-006) Oracle Database Foundations Associate Practice Test

(1Z0-006) Oracle Database Foundations Associate Practice Test

1Z0-006 Oracle Architecture & Tools 2