1Z0-006 Oracle Architecture & Tools 3 — Questions and Answers
Question 1: Which component of the Oracle SGA stores information about database objects such as table definitions and user privileges?
- Database Buffer Cache
- Redo Log Buffer
- Data Dictionary Cache (Correct answer)
- Large Pool
Correct answer: Data Dictionary Cache
The Data Dictionary Cache (part of the Shared Pool) stores metadata about database objects, reducing repeated reads of the data dictionary from disk.
Question 2: What is the function of the ARCH (Archiver) background process?
- Writes redo data from the log buffer to online redo log files
- Copies filled online redo log files to archive log destinations (Correct answer)
- Performs instance recovery at database startup
- Monitors and reclaims temporary segment space
Correct answer: Copies filled online redo log files to archive log destinations
The ARCH process copies online redo log files to one or more archive destinations when the database runs in ARCHIVELOG mode.
Question 3: What does SQL*Plus primarily allow a DBA or developer to do?
- Graphically design database schemas
- Execute SQL and PL/SQL statements interactively from a command line (Correct answer)
- Visually browse and edit table data in a spreadsheet view
- Monitor real-time AWR performance reports
Correct answer: Execute SQL and PL/SQL statements interactively from a command line
SQL*Plus is Oracle's command-line interface for running SQL queries, PL/SQL blocks, and administrative commands against an Oracle database.
Question 4: When a checkpoint occurs in Oracle, which process is signaled to write dirty buffers to disk?
- LGWR
- SMON
- DBWR (Correct answer)
- CKPT
Correct answer: DBWR
During a checkpoint, the CKPT process signals DBWR to write all dirty buffers to disk, then updates the control file and data file headers with the checkpoint position.
Question 5: Which Oracle memory area is used for large operations such as parallel query buffers and RMAN backup/restore I/O?
- Shared Pool
- Database Buffer Cache
- Large Pool (Correct answer)
- Java Pool
Correct answer: Large Pool
The Large Pool is an optional SGA area that provides large memory allocations for parallel execution, RMAN, and shared server session memory.
Question 6: In Oracle Database architecture, what is a tablespace?
- A single physical file stored on the operating system
- A logical storage unit composed of one or more data files (Correct answer)
- A memory area in the SGA used for sorting
- A background process that manages storage allocation
Correct answer: A logical storage unit composed of one or more data files
A tablespace is a logical storage container that groups related database objects; it maps to one or more physical data files on disk.
Question 7: Which Oracle tool provides a graphical IDE for writing, debugging, and tuning SQL and PL/SQL code?
- Enterprise Manager Cloud Control
- SQL*Plus
- Oracle SQL Developer (Correct answer)
- RMAN
Correct answer: Oracle SQL Developer
Oracle SQL Developer is a free, graphical IDE that supports SQL querying, PL/SQL development, debugging, and performance tuning.
1Z0-006 Oracle Architecture & Tools 3
Which component of the Oracle SGA stores information about database objects such as table definitions and user privileges?