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Oracle® Database Express Edition Installation Guide
11g Release 2 (11.2) for Linux x86-64

E18802-03
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Oracle® Database Express Edition

Installation Guide

11g Release 2 (11.2) for Linux x86-64

E18802-03

July 2011

Welcome to Oracle Database Express Edition Installation Guide for Linux x86-64. This guide covers the following topics:

Note:

The most up-to-date version of this installation guide is available from the Oracle Database Express Edition (Oracle Database XE) download page on Oracle Technology Network:

http://www.oracle.com/pls/xe112/homepage

1 Introduction

Oracle Database XE is easy to install. Oracle Database XE provides an Oracle database and tools for managing the database.

Oracle Database XE supports the following development environments:

For more information on Oracle Database XE, see the following:

2 Requirements

This section covers the following topics:

2.1 Software Requirements

This section covers the following topics:

2.1.1 System Requirements

Table 1 provides system requirements for Oracle Database XE.

Table 1 Oracle Database XE Requirements

Requirement Value

Operating system

One of the following:

  • Oracle Enterprise Linux 4 Update 7

  • Oracle Enterprise Linux 5 Update 2

  • Red Hat Enterprise Linux 4 Update 7

  • Red Hat Enterprise Linux 5 Update 2

  • SUSE Linux Enterprise Server 10 SP2

  • SUSE Linux Enterprise Server 11

Network protocol

The following protocols are supported:

  • IPC

  • Named Pipes

  • SDP

  • TCP/IP

  • TCP/IP with SSL

RAM

256 megabytes minimum, 512 megabytes recommended

Disk space

1.5 gigabyte minimum

Packages

  • glibc should be greater than or equal to 2.3.4-2.41

  • make should be greater than or equal to 3.80

  • binutils should be greater than or equal to 2.16.91.0.5

  • gcc should be greater than or equal to 4.1.2

  • libaio should be greater than or equal to 0.3.104


2.1.2 Swap Space Requirements

Minimum swap space required for Oracle Database XE is 2 GB or twice the size of RAM, whichever is lesser.

2.1.3 Server Component Kernel Parameter Requirements

The Oracle Database XE installation checks your system for the following kernel parameter settings. If the kernel parameters of your system are less than the values listed in Table 2, then the installation will modify the kernel parameter setting to use the values in this table.

Table 2 Kernel Parameter Settings Required for Oracle Database XE

Kernel Parameter Setting

semmsl

250

semmns

32000

semopm

100

semmni

128

shmmax

4294967295

shmmni

4096

shmall

2097152

file-max

6815744

VERSION

2.4.21

ip_local_port_range

9000–65500


2.2 Permission Requirement for Installing Oracle Database XE

You must have root permission to install Oracle Database XE.

3 Licensing Restrictions

This section covers the following topics:

3.1 Oracle Database XE CPU Limitations

If Oracle Database XE is installed on a computer with more than one CPU (including dual-core CPUs), then it will consume, at most, processing resources equivalent to one CPU. For example, on a computer with two CPUs, if two Oracle database clients try to simultaneously execute CPU-intensive queries, then Oracle Database 11g Standard Edition, Oracle Database 11g Standard Edition One, or Oracle Database 11g Enterprise Edition will use both CPUs to efficiently process the queries. However, with Oracle Database XE, the Oracle database will process the queries at the rate of a single CPU even if concurrent processing on two CPUs would be faster. To use the full processing resources of your computer, upgrade to Oracle Database 11g Standard Edition, Oracle Database 11g Standard Edition One, or Oracle Database 11g Enterprise Edition.

3.2 Oracle Database XE Installation and Execution Restrictions

Only one installation of Oracle Database XE can be performed on a single computer. This does not affect any existing installation or new installations of Oracle Database 11g Standard Edition, Oracle Database 11g Standard Edition One, or Oracle Database 11g Enterprise Edition. In addition, users can run only one instance of the Oracle Database XE database on each individual computer. To run more than one Oracle Database server instance or install more than one copy of the database software, upgrade to Oracle Database 11g Standard Edition, Oracle Database 11g Standard Edition One, or Oracle Database 11g Enterprise Edition.

3.3 Oracle Database XE User Data Limitations

The maximum amount of user data in an Oracle Database XE database cannot exceed 11 gigabytes. If the user data grows beyond this limit, then an ORA-12592 error will appear. To use more than 11 gigabytes of user data, upgrade to Oracle Database 11g Standard Edition, Oracle Database 11g Standard Edition One, or Oracle Database 11g Enterprise Edition.

3.4 Oracle Database XE RAM Limitation

The maximum amount of RAM that an Oracle Database XE database uses cannot exceed 1 gigabyte, even if more is available. Table 1, "Oracle Database XE Requirements" provides the minimum and recommended RAM that you should use. The exact amount of RAM that Oracle Database XE uses is computed automatically using Automatic Memory Management.

To use more than 1 gigabyte of RAM, upgrade to Oracle Database 11g Standard Edition, Oracle Database 11g Standard Edition One, or Oracle Database 11g Enterprise Edition.

For more information about managing memory, refer to Oracle Database Express Edition 2 Day DBA.

3.5 HTTPS Support

HTTPS is not supported natively with the HTTP listener built into Oracle Database XE. If you want HTTPS support, use an alternative Web listener, such as Apache, that does provide HTTPS support, and provide proxies for the URLs provided by Oracle Database XE.

For information about managing security in Oracle Database XE, refer to Oracle Database Express Edition 2 Day DBA.

4 Installing Oracle Database XE

This section covers the following topics:

4.1 Procedure for Installing Oracle Database XE

Before attempting to install Oracle Database XE 11.2 uninstall any existing Oracle Database XE or database with the SID XE from the target system.

To install Oracle Database XE:

  1. Log on to your computer with root permissions.

  2. Go to the following Web site:

    http://www.oracle.com/technetwork/database/express-edition/downloads/index.html

  3. Click Free Download and follow the instructions to select and download the Linux version of Oracle Database XE.

  4. Run the Oracle Database XE executable oracle-xe-11.2.0-1.0.x86_64.rpm to install Oracle Database XE.

    # rpm -ivh downloads/oracle-xe-11.2.0-1.0.x86_64.rpm
    

    The installation displays a status of its progress.

  5. When prompted, run the following command:

    # /etc/init.d/oracle-xe configure
    
  6. Enter the following configuration information:

    • A valid HTTP port for the Oracle Application Express (the default is 8080)

    • A valid port for the Oracle database listener (the default is 1521)

    • A password for the SYS and SYSTEM administrative user accounts

    • Confirm password for SYS and SYSTEM administrative user accounts

    • Whether you want the database to start automatically when the computer starts (next reboot)

This completes configuration. The database starts during the boot process.

Note:

The password for the INTERNAL and ADMIN Oracle Application Express user accounts is initially the same as the SYS and SYSTEM administrative user accounts.

To start the database manually, run this command as root user:

# /etc/init.d/oracle-xe start

To stop the database manually, run the following command as root user:

# /etc/init.d/oracle-xe stop

Note:

You can find the database creation logs in $ORACLE_HOME/config/log/*.

4.2 Performing a Silent Installation

The response file xe.rsp is shipped along with the Oracle Database XE executable .rpm file.

To perform a silent installation:

  1. After downloading the installation executable (described under "Procedure for Installing Oracle Database XE"), prepare the response file xe.rsp that contains settings for the following values:

    • ORACLE_LISTENER_PORT: A valid listener numeric port value, so that you can connect to Oracle Database XE

    • ORACLE_HTTP_PORT: A valid HTTP port numeric value for Oracle Application Express

    • ORACLE_PASSWORD: A password value for the SYS and SYSTEM administrative user accounts

    • ORACLE_CONFIRM_PASSWORD: The SYS and SYSTEM password value again, to confirm it

    • ORACLE_DBENABLE: Yes (y) or no (n), to specify whether you want to start Oracle Database XE automatically when the computer starts

    The default values are populated for ORACLE_LISTENER_PORT, ORACLE_HTTP_PORT, and ORACLE_DBENABLE in the response file.

  2. Create a wrapper shell script to perform the silent installation.

    It should contain commands similar to the following:

    #!/bin/bash
     
    rpm -ivh  /downloads/oracle-xe-11.2.0-1.0.x86_64 > /xe_logs/XEsilentinstall.log
    
    /etc/init.d/oracle-xe configure responseFIle=<location of xe.rsp> >> /xe_logs/XEsilentinstall.log
    
  3. Run the wrapper script as the root user.

    For details of the installation, see the XEsilentinstall.log file.

After you complete the silent installation, set the Oracle Database XE environment variables, which is described in Section 4.3, "Setting the Oracle Database XE Environment Variables".

Note:

You can find the database creation logs in $ORACLE_HOME/config/log/*.

4.3 Setting the Oracle Database XE Environment Variables

After you have installed and configured Oracle Database XE, users must set their environment before they use Oracle Database XE. They do not need to log on with root permissions to do so. Oracle Database XE provides a script that sets the necessary environment variables.

Follow these steps:

  1. Go to the following directory:

    /u01/app/oracle/product/11.2.0/xe/bin

  2. Look for the following scripts:

    • oracle_env.csh (for C or tcsh shell)

    • oracle_env.sh (for Bourne, Bash, or Korn shell)

  3. Run the appropriate script for your shell. For example:

    • Bourne, Bash, or Korn shell:

      $ . ./oracle_env.sh
      
    • C or tcsh shell:

      % source oracle_env.csh
      

You may also want edit your login or profile files so that these environment variables are set properly each time you log in or open a new shell.

For Bourne, Bash, or Korn shell, enter the following line into the .bash_profile (to log in) or .bashrc file (to open a new shell):

. /u01/app/oracle/product/11.2.0/xe/bin/oracle_env.sh

For C or tcsh shell, enter the following line into the .login file (to log in) or .cshrc file (to open a new shell):

source /u01/app/oracle/product/11.2.0/xe/bin/oracle_env.csh

4.4 Making Oracle Database XE Available to Remote Clients

After you install Oracle Database XE, the Get Started With Oracle Database 11g Express Edition home page is only available from the local server, not remotely.

Security Note:

With remote HTTP access to Oracle Database XE, all information exchanged between the browser and the database is in clear text—that is, unencrypted—including database user names and passwords. If this is cause for concern, do not enable remote HTTP connection to the database.

To use the SQL Command Line, follow these steps:

  1. Start SQL*Plus and log in as SYSTEM:

    $ sqlplus system
    Enter password: SYSTEM_password
    

    Or, if you are logging in remotely:

    $ sqlplus system@xe_server_host_name
    Enter password: SYSTEM_password
    
  2. At the SQL prompt, enter the following command:

    SQL> EXEC DBMS_XDB.SETLISTENERLOCALACCESS(FALSE);
    

4.5 Compiling the Oracle ODBC Driver Demos

If you plan to compile and run the Oracle ODBC Driver demos, then follow these steps:

  1. If you do not have unixODBC DriverManager installed, then download it from the following Web site:

    http://www.unixodbc.org/

  2. Set the ODBCDM_HOME environment variable to point to the directory where you installed DriverManager.

  3. Run the following make file to compile the Oracle ODBC Driver demos:

    make -f demo_xe.mk buildodbcdemo ODBCDM_HOME=DriverManager_location
    

5 Starting Oracle Database XE

After you have installed Oracle Database XE, the database is up and running and you can begin using it right away, as follows:

  1. If the database is currently stopped, start it as follows: click the Main menu (on Gnome) or the Applications menu (on KDE), then Oracle Database 11g Express Edition, and then click Start Database.

  2. Go to the Main menu (on Gnome) or the Applications menu (on KDE), then Oracle Database 11g Express Edition, and then click Run SQL Command Line. Connect to the database using the user name SYSTEM, and supply the password that you created during configuration.

  3. To begin learning about Oracle Database XE, use the OracleDatabase XE Documentation.

    To access the Oracle Database XE Documentation, from the Main menu (on Gnome) or the Applications menu (on KDE), select Oracle Database 11g Express Edition, then Get Help, and then click Read Documentation.

Note:

To use Oracle Database XE, your user id must be a member of Linux group dba.

6 Deinstalling Oracle Database XE

When you deinstall Oracle Database XE, all components, including data files, the database, and the software, are removed. If you want to save your data files but remove the Oracle Database XE software and database, then first export the data by using one of the methods described in Oracle Database Express Edition 2 Day DBA before you deinstall.

Because the deinstallation process removes all files from the directory in which Oracle Database XE is installed, back up any files from the directory (if needed) before you deinstall.

This section covers the following topic:

6.1 Deinstalling the Oracle Database XE Software

Follow these steps:

  1. Log on with root privileges.

  2. Run the following command to deinstall Oracle Database XE:

    # rpm -e oracle-xe
    

7 Importing and Exporting Data between 10.2 XE and 11.2 XE

To import and export data between 10.2 XE and 11.2 XE, perform the following steps:

  1. Copy the gen_inst.sql file from the upgrade directory of 11.2 XE shiphome to your local directory.

  2. Connect to 10.2 XE database as SYS user and run gen_inst.sql. This will generate install.sql, gen_apps.sql and other .sql files. The files will be generated in the folder containing gen_inst.sql.

    SQL> @<local_dir>/gen_inst.sql

    where local_dir is the local directory where gen_inst.sql is copied

    Note:

    Do not copy the gen_inst.sql file into the 10.2 XE home directory if you plan to install XE 11.2 on the same system. All generated files get deleted if XE 10.2 is uninstalled.
  3. To export the data from 10.2 XE database, perform the following steps:

    1. Connect to 10.2 XE database as SYS user.

    2. Create a dump folder dump_folder on the local file system.

    3. Create directory object DUMP_DIR with READ and WRITE privilege to SYSTEM user.

      SQL> CREATE DIRECTORY DUMP_DIR AS '/<dump_folder>';
      SQL>GRANT read, write ON DIRECTORY DUMP_DIR TO system;
      
    4. Export data from 10.2 XE database to the dump folder.

      expdp system/system_password full=Y 
             EXCLUDE=SCHEMA:\"LIKE \'APEX_%\'\",SCHEMA:\"LIKE \'FLOWS_%\'\" 
             directory=DUMP_DIR dumpfile=DB10G.dmp logfile=expdpDB10G.log
      expdp system/system_password TABLES=FLOWS_FILES.WWV_FLOW_FILE_OBJECTS$ 
             directory=DUMP_DIR dumpfile=DB10G2.dmp logfile=expdpDB10G2.log
      
  4. Deinstall 10.2 XE if installation of 11.2 XE is planned on the same system.

  5. Install 11.2 XE database. For more information see Section 4, "Installing Oracle Database XE".

  6. To import data to the 11.2 XE database, perform the following steps:

    1. Connect to 11.2 XE database as SYS user.

    2. Create directory object DUMP_DIR with READ and WRITE privilege to SYSTEM user.

      SQL> CREATE DIRECTORY DUMP_DIR AS '/<dump_folder>';
      SQL>GRANT read, write ON DIRECTORY DUMP_DIR TO system;
      
    3. Import data to 11.2 XE database from the dump folder.

      impdp  system/system_password full=Y directory=DUMP_DIR 
            dumpfile=DB10G.dmp logfile=expdpDB10G1.log
      impdp  system/system_password directory=DUMP_DIR 
            TABLE_EXISTS_ACTION=APPEND  TABLES=FLOWS_FILES.WWV_FLOW_FILE_OBJECTS$ dumpfile=DB10G2.dmp logfile=expdpDB10G1b.log
      
  7. Connect to 11.2 XE database as SYS user and run the script install.sql, which was generated in Step 2. This will trigger the execution of ws.sql, gen._apps.sql, and other .sql files.

8 Reporting Security Vulnerabilities

If you find any security vulnerabilities with Oracle Database XE, then send a description of the problem to Oracle at the following e-mail address:

secalert_us@oracle.com

Include the following information in your e-mail:

For more information on how Oracle handles security issues, visit:

http://www.oracle.com/technology/deploy/security/index.html

9 Oracle Database XE Character and Language Configurations

Oracle Database XE is available only in Universal multi-language character set and language configuration:

"Globalization Support: Configuring Locale and Character Sets with the NLS_LANG Parameter" provides additional character and language information.

10 Globalization Support: Configuring Locale and Character Sets with the NLS_LANG Parameter

This section explains how to configure globalization settings for Oracle Database XE. It covers the following topics:

10.1 About the NLS_LANG Parameter

Oracle provides globalization support that enables users to interact with a database in their preferred locale and character set settings. Setting the NLS_LANG environment variable specifies locale behavior for Oracle software. It sets the language and territory used by the client application and the database server. It also sets the character set for entering and displaying data by a client program, such as SQL*Plus.

The NLS_LANG parameter uses the following format:

NLS_LANG = LANGUAGE_TERRITORY.CHARACTER_SET

This format is explained in the following table:

Parameter Description
LANGUAGE Specifies the language for displaying product messages, day names, and month names in SQL.

Oracle Database Globalization Support Guide provides more information about languages.

TERRITORY Specifies the cultural-specific conventions for date, number, time, and monetary formatting.

Oracle Database Globalization Support Guide provides more information about territory conventions.

CHARACTER_SET Specifies the encoding used by the client application, which is usually the character set of the source data being processed, and the character set used in displaying the output.

"Supported Character Sets" provides a list of supported character sets.


Oracle Database Globalization Support Guide provides information about the NLS_LANG parameter and Globalization Support initialization parameters.

10.2 Default Values for NLS_LANG

The locale setting of your Linux session affects how you should set your NLS_LANG parameter. Table 3 lists the different Linux languages and their default locale IDs, together with the corresponding NLS_LANG values.

Table 3 NLS_LANG Parameter Values for Linux Locales

Language Locale ID NLS_LANG

English (American)

en_US.UTF-8

AMERICAN_AMERICA.AL32UTF8

English (American)

en_US.ISO-8859-1

AMERICAN_AMERICA.WE8ISO8859P1

English (American)

en_US.ISO-8859-15

AMERICAN_AMERICA.WE8ISO8859P15

English (Australian)

en_AU.UTF-8

ENGLISH_AUSTRALIA.AL32UTF8

English (Australian)

en_AU.ISO-8859-1

ENGLISH_AUSTRALIA.WE8ISO8859P1

English (Australian)

en_AU.ISO-8859-15

ENGLISH_AUSTRALIA.WE8ISO8859P15

English (British)

en_GB.UTF-8

ENGLISH_UNITED KINGDOM.AL32UTF8

English (British)

en_GB.ISO-8859-1

ENGLISH_UNITED KINGDOM.WE8ISO8859P1

English (British)

en_GB.ISO-8859-15

ENGLISH_UNITED KINGDOM.WE8ISO8859P15

English (Ireland)

en_IE.UTF-8

ENGLISH_IRELAND.AL32UTF8

English (Ireland)

en_IE.ISO-8859-1

ENGLISH_IRELAND.WE8ISO8859P1

English (Ireland)

en_IE.ISO-8859-15

ENGLISH_IRELAND.WE8ISO8859P15

Portuguese (Brazilian)

pt_BR.UTF-8

BRAZILIAN PORTUGUESE_BRAZIL.AL32UTF8

Portuguese (Brazilian)

pt_BR.ISO-8859-1

BRAZILIAN PORTUGUESE_BRAZIL.WE8ISO8859P1

Portuguese (Brazilian)

pt_BR.ISO-8859-15

BRAZILIAN PORTUGUESE_BRAZIL.WE8ISO8859P15

Japanese

ja_JP.EUC-JP

JAPANESE_JAPAN.JA16EUC

Japanese

ja_JP.UTF-8

JAPANESE_JAPAN.AL32UTF8

Chinese (simplified)

zh_CN.GB18030

SIMPLIFIED CHINESE_CHINA.ZHS32GB18030

Chinese (simplified)

zh_CN.UTF-8

SIMPLIFIED CHINESE_CHINA.AL32UTF8

Chinese (traditional)

zh_TW.BIG5

TRADITIONAL CHINESE_TAIWAN.ZHT16BIG5

Chinese (traditional)

zh_TW.UTF-8

TRADITIONAL CHINESE_TAIWAN.AL32UTF8


10.3 Supported Character Sets

Table 4 lists the supported character sets in Oracle Database XE.

The character set AL16UTF16 can be used only as an NCHAR character set, and not as a database character set.

Table 4 Supported Universal Character Sets

Name Description

AL16UTF16

Unicode 4.0 UTF-16 Universal character set

AL32UTF8

Unicode 4.0 UTF-8 Universal character set

UTF8

Unicode 3.0 UTF-8 Universal character set, CESU-8 compliant


10.4 Charmap and Oracle Character Set

The character set mapping (charmap) of the locale ID assigned for each language may vary depending on the distribution and version of the Linux operating system. To determine the current character mapping, enter the following command in a shell:

% locale charmap
UTF-8

Table 5 lists each charmap with its corresponding Oracle character set. In general, you should update the CHARACTER_SET part of the NLS_LANG parameter according to the actual charmap of your Linux session.

Table 5 Mapping charmap to Oracle Character Set

Locale charmap Oracle Character Set

UTF-8

AL32UTF8

ISO-8859-1

WE8ISO8859P1

ISO-8859-2

EE8ISO8859P2

ISO-8859-3

SE8ISO8859P3

ISO-8859-4

NEE8ISO8859P4

ISO-8859-5

CL8ISO8859P5

ISO-8859-6

AR8ISO8859P6

ISO-8859-7

EL8ISO8859P7

ISO-8859-8

IW8ISO8859P8

ISO-8859-9

WE8ISO8859P9

ISO-8859-13

BLT8ISO8859P13

ISO-8859-14

CEL8ISO8859P14

ISO-8859-15

WE8ISO8859P15

BIG5

ZHT16BIG5

BIG5-HKSCS

ZHT16HKSCS

CP1251

CL8MSWIN1251

CP1255

IW8MSWIN1255

EUC-JP

JA16EUC

EUC-KR

KO16KSC5601

EUC-TW

ZHT32EUC

GB18030

ZHS32GB18030

GB2312

ZHS16CGB231280

GBK

ZHS16GBK

TIS-620

TH8TISASCII


11 Documentation Accessibility

For information about Oracle's commitment to accessibility, visit the Oracle Accessibility Program website at http://www.oracle.com/pls/topic/lookup?ctx=acc&id=docacc.

Access to Oracle Support

Oracle customers have access to electronic support through My Oracle Support. For information, visit http://www.oracle.com/pls/topic/lookup?ctx=acc&id=info or visit http://www.oracle.com/pls/topic/lookup?ctx=acc&id=trs if you are hearing impaired.


Oracle Database Express Edition Installation Guide, 11g Release 2 (11.2) for Linux x86-64

E18802-03

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