This guide explains how to install and configure Oracle Database Express Edition on Linux x86–64.

This guide also provides information about resources available to develop applications and how to remove the database software.


This guide is intended primarily for application developers who are either developing applications or converting applications to run in the Oracle Database environment.

Oracle Database 18c Express Edition (Oracle Database XE) is a free version of the world's most capable relational database. Oracle Database XE is easy to install, easy to manage, and easy to develop with. With Oracle Database XE, you use an intuitive, browser-based interface to administer the database, create tables, views, and other database objects, import, export, and view table data, run queries and SQL scripts, and generate reports.

Documentation Accessibility

For information about Oracle's commitment to accessibility, visit the Oracle Accessibility Program website at

Access to Oracle Support

Oracle customers that have purchased support have access to electronic support through My Oracle Support. For information, visit or visit if you are hearing impaired.

Command Syntax

Refer to these command syntax conventions to understand command examples in this guide.

Convention Description
$ Bourne or BASH shell prompt in a command example. Do not enter the prompt as part of the command.
% C Shell prompt in a command example. Do not enter the prompt as part of the command.
# Superuser (root) prompt in a command example. Do not enter the prompt as part of the command.
monospace UNIX command syntax

backslash \

A backslash is the UNIX and Linux command continuation character. It is used in command examples that are too long to fit on a single line. Enter the command as displayed (with a backslash) or enter it on a single line without a backslash:

dd if=/dev/rdsk/c0t1d0s6 of=/dev/rst0 bs=10b \  count=10000

braces { }

Braces indicate required items:

.DEFINE {macro1}

brackets [ ]

Brackets indicate optional items:

cvtcrt termname [outfile]

ellipses ...

Ellipses indicate an arbitrary number of similar items:

CHKVAL fieldname value1 value2 ... valueN


Italic type indicates a variable. Substitute a value for the variable:


vertical line |

A vertical line indicates a choice within braces or brackets:

FILE filesize [K|M]

Related Documents

To help you with your development efforts, consult the books in the development category of the Oracle database documentation set at Oracle Database Development

Title Content

2 Day DBA

Discusses common day-to-day administrative tasks.

2 Day Developer's Guide

Explains how to develop applications with the Oracle Database.

2 Day + PHP Developer's Guide

Provides a tutorial that shows you how to download and install Apache and the Zend Core PHP drivers, and then how to use PHP to connect to Oracle Database XE, and demonstrates how to use PHP to develop a simple application that accesses and modifies data.

2 Day + Java Developer’s Guide

Provides a tutorial that shows you how to use Java and JDBC to connect to Oracle Database, and demonstrates how to develop a simple Java application that accesses and modifies data.

For more information, see these documents in the Oracle Database documentation set:


The following text conventions are used in this document:
Convention Meaning


Boldface type indicates graphical user interface elements associated with an action, or terms defined in text or the glossary.


Italic type indicates book titles, emphasis, or placeholder variables for which you supply particular values.


Monospace type indicates commands within a paragraph, URLs, code in examples, text that appears on the screen, or text that you enter.