Mencoba ins ta la s i orac l exe di ubuntu 11.10 (oner ic oce lo t )

1. Tambahakan oracle repository, dengan cara ketikkan perintah berikut :

membuka terminal diubuntu atau ctrl-alt+t

$ sudo gedit /etc/apt/sources.list

==>: Kemudian tambahkan repo dibawah ini :

deb http://oss.oracle.com/debian unstable main non-free

2. 2. Kemudian update :

$ sudo apt-get update

3. 3. Install oracle software :

$ sudo apt-get install libaio

$ sudo apt-get install oracle-xe-client

$ sudo apt-get install oracle-xe

$ sudo apt-get install oracle-xe-universal

4. 4. Install paket Oracle Express

$ sudo aptitude install oracle-xe oracle-xe-client

5. 5. Konfigurasi buat setting password, port, dll…

$ sudo /etc/init.d/oracle-xe configure

6. 6. Tambahkan Oracle gpg-public key untuk apt-key chain :

$ wget http://oss.oracle.com/el4/RPM-GPG-KEY-oracle -O- | sudo apt

7. 7. Kemudian buat akses-ny masuk k’browser :

http://127.0.0.1:8080/apex

Pada port 8080 ini tergantung port yang diinstall pada saat proses instalasi oracle

selamat belajar DBMS Oracle from desabener.co.cc

salam desa bener

Kita khan udan selesai instal khan,ngopi dulu sambil makan sepotong roti bakar bekas dan

eittt...terusin dulu nich masih ada tutornya lagi dibawahnya....istirahat dulu lach....lanjutin lagi nanti

dan kasih ruang istirahat daya fikirnya dulu...hehehe...

dalam penginstalan DBMS Oracle ini kadang kita pada saat proses instalasi mengalami kendala so

what jangan bingung disini,admin telah cari-cari di mbah google dan menemukan tutorial dari mbah

Oracle.com dalam forum oracle dan uraiannya copy pastenya dibawah ini

Oracle 11gR2 Express Edition on Linux Ubuntu 11.10 howto

Author: Dude

Version: D

Last modified: 14-Jan-2012

You are welcome to add comments, but please do not discuss your installation issues in this

thread. If you have a question about the instructions, please add a simple note to the link of

your own thread. The instructions are the result of my own research and development. If you

would like to use any of the information for your own blog or website, please include a link to

this reference to include future changes.

https://forums.oracle.com/forums/thread.jspa?threadID=2301639

Purpose

This document outlines instructions how to install Oracle XE under Ubuntu 11.10.

Ubuntu or Debian based Linux is not on the list of supported operation systems according to the

Oracle documentation at

http://download.oracle.com/docs/cd/E17781_01/install.112/e18802/toc.htm. You may want to

consider virtualization software like Oracle Virtualbox and install Oracle Enterprise Linux as a free

and professional alternative to installing XE under Ubuntu. You can also download pre-build virtual

machines that include Oracle XE. You can browse http://otn.oracle.com/community/developer-vm

for more information.

Topics

1) Install Linux Ubuntu

2) Remote Terminal

3) Install Additional Software

4) Managing Swap Space

5) Modify Kernel Parameters

6) Oracle Home Directory

...a) Resize the Root Partition

...b) Setup External Storage

7) ORA-00845: MEMORY_TARGET

8) Installing Oracle 11gR2 Express Edition

9) Post-Installation

10) Tips and Troubleshooting

...a) Port 1521 appears to be in use by another application

...b) cannot touch `/var/lock/subsys/listener': No such file or directory

...c) ORA-00845: MEMORY_TARGET

...d) Apex ADMIN password

...e) SYS and SYSTEM password

...f) Uninstall Oracle 11g XE

...g) Reconfigure Oracle 11g XE

...h) Gnome Classic desktop

...i) Unix vi cursor keys

...j) Backup Database

11) History

12) References

1) Install Linux Ubuntu

The following assumes you have installed Ubuntu 11.10 Desktop Edition for AMD 64-bit, or

upgraded from a previous version. Keep in mind that Oracle 11gR2 Express Edition is only

available for 64-bit architecture. It is not necessarily a requirement, but I would not bother to install

Oracle 11gR2 XE on a system with less than 2 GB of RAM installed. You can download Ubuntu for

free at: http://www.ubuntu.com/download/ubuntu and install it using the default settings provided.

You can apply the latest OS patch-sets by clicking the power button icon in the upper right hand

corner of the screen and selecting "Updates available..."

2) Remote Terminal

You will need command line access to perform the installation tasks. Select the top "Dash Home"

button of the Unity toolbar and enter the word "terminal", or use CTRL-ALT-t. If you prefer to open

a remote terminal session use SSH. Ubuntu does not come with a secure shell login by default. To

install it, use the following command:

sudo apt-get install openssh-server

You cannot login as root unless you set a root password using the "sudo passwd root" command.

However, you can get root user access using the "sudo" command, which requires only to re-enter

the password of your personal account. Access to "sudo" is controlled by the /etc/sudoers file.

The best way to establish a remote command line session as root is to login with your personal

account, e.g.: ssh dude@example.com, and then type "sudo su -" to become root, or use "sudo

<command>" to execute individual commands. If your account does not have "sudo" access you

can login as root using "su - root", but will need to know the root password.

3) Install Additional Software

Oracle 11g Express Edition requires additional software that is not installed by default:

sudo apt-get install alien libaio1 unixodbc

4) Managing Swap Space

Oracle demands that the minimum swap space for Oracle Database XE is 2 GB (2095100 KB) or

twice the size of RAM, whichever is lesser. Enter the following shell command to verify your swap

space:

cat /proc/meminfo | grep -i swap

SwapCached: 0 kB

SwapTotal: 2095100 kB

SwapFree: 2095100 kB

You can increase available swap space by using a swap file as long as disk space permits. The

advantage of a swap file versus a swap partition is flexible space management because you can add

or delete swap space on demand as necessary. The following will create and enable an additional 1

GB swap file at system startup, located in the /home directory:

Login as root:

sudo su -

Enter the following commands:

dd if=/dev/zero of=/home/swapfile bs=1024 count=1048576

mkswap /home/swapfile

swapon /home/swapfile

swapon -a

Create a backup of the original "fstab" file and add the new swap file:

cp /etc/fstab /etc/fstab.backup_`date +%N`

echo '/home/swapfile swap swap defaults 0 0' >> /etc/fstab

Exit from root and verify the new swap space:

exit

swapon -s

Filename Type Size Used Priority

/dev/sda5 partition 2095100 0 -1

/home/swapfile file 1048572 0 -2

Swap space is not a substitute for installed RAM. Swap space is a safeguard that allows the system

to move idle processes to disk before the OOM killer will begin to terminate processes in order to

free up enough real memory to keep the system operational. The general rule for sizing the swap

space depends on the size of installed RAM. If your system has less then 4 GB of RAM the swap

space should usually be at least twice this size. If you have more than 8 GB of RAM installed you

may consider to use an equal size as swap space. The more RAM you have installed, the less likely

you are going to run into memory starvation, and the less likely you are going to need swap space,

unless you have a bad process.

5) Modify Kernel Parameters

Oracle 11gR2 Express Edition requires the following Kernel parameters. Enter the commands

exactly as shown:

Login as root:

sudo su -

Cut & paste the following directly into a command shell (not a text editor):

cat > /etc/sysctl.d/60-oracle.conf <<-EOF

# Oracle 11g XE kernel parameters

fs.file-max=6815744

net.ipv4.ip_local_port_range=9000 65500

kernel.sem=250 32000 100 128

# kernel.shmmax=429496729

kernel.shmmax=107374183

EOF

Load and verify the new kernel parameters:

service procps start

sudo sysctl -q fs.file-max

sudo sysctl -q kernel.shmmax

sudo sysctl -q net.ipv4.ip_local_port_range

sudo sysctl -q kernel.sem

The SHMMAX kernel parameter defines the upper memory limit of a process. It is a safeguard to

stop a bad process from using all memory and causing RAM starvation. The Linux default is 32

MB. The official Oracle XE installation documentation suggests a value of 4 GB -1 bytes

(429496729). Since Oracle 11g XE has a 1 GB memory limit, a smaller footprint will be a better

safeguard for the complete system. Setting the SHMMAX parameter to 107374183 will be

sufficient.

6) Oracle Home Directory

At the time of this writing, Enterprise Linux 6 is not supported for Oracle database yet. It is

therefore not possible to confirm Oracle ext4 filesystem compatibility, which is default in Ubuntu

11. According to various information, ext4 may cause a performance problem for Oracle 11g

database. The following will show you how to add a ext3 partition to your existing setup.

6.a) Resize the Root Partition

Provided you have sufficient free disk space, you should be able to resize the root partition to create

an extra ext3 filesystem. Considering the 11 GB user datafile limit of the Express Edition, 18 GB

should be more than enough.

You can use the free Gparted Live CD to shrink your startup volume. Gparted downloads are

available at http://sourceforge.net/projects/gparted/files/gparted-live-stable. When burning the CD,

pay attention to burn the raw .iso image and not the possibly "mounted" image. If you are using a

virtual machine like Oracle Virtualbox, you can mount the .iso image directly. There are going to be

a few prompts when the system starts from the CD, but you can press Return to accept the defaults.

When the Gparted window appears:

- Select your ext4 root partition, usually /dev/sda1

- Select the "Resize/Move" button from the toolbar.

- Enter 18000 into the "Free space following" field and press the Return key.

Be careful not not change the start of the partition!

- Click the "Resize/Move" of the dialog and then then the "Apply" toolbar

button.

The process may take several minutes - do not abandon it!

- Select the new unallocated free space of ~ 18 GB and push the "New" button.

- Set the file system to "ext3" and label it "oraclexe" and click the "Add"

button.

Be sure to label it oraclexe, otherwise the follow-up instructions will fail.

- Finally select "Apply from the toolbar to apply the changes.

- Quit "Gparted", select "Exit" from the desktop and choose "Reboot" to restart

the system.

After the system has restarted, open a terminal command shell.

Login as root:

sudo su -

Backup "fstab" and add the UUID of the partition. The "tr" command remove the quotes:

cp /etc/fstab /etc/fstab_`date +%N`

uuid=`blkid | grep oraclexe | awk '{print $3}'`

uuid=`echo $uuid | tr -d '\042'`

echo $uuid

echo "$uuid /u01 ext3 errors=remount-ro 0 1" >> /etc/fstab

The UUID is a unique number and should look similar to:

UUID=d1db753e-b5dd-4a4c-a61e-259c69867b58

Restart the system:

reboot

Verify the success:

df -h /u01

6.b) Setup External Storage

If you prefer to setup an external drive to install Oracle XE, beware that it can be a fatal mistake to

make an entry in /etc/fstab to automount your external storage device. An unavailable device in

/etc/fstab will prevent a system startup and prompt for appropriate actions at the console.

The following is an example of how to prepare an external storage device to be used for Oracle 11g,

including a script to automatically mount an external drive at system startup without the

disadvantages of /etc/fstab. The script will also take into consideration that a device name might

shift if you attach additional devices.

To find out which USB devices are connected:

sudo parted -l

Look for the device that matches your USB storage. For example: /dev/sdb1

Model: USB 2.0 Flash Disk (scsi)

Disk /dev/sdb: 2064MB

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Number Start End Size File system Name Flags

1 20.5kB 1929MB 1929MB hfs+ mystick

Initialize the device using ext3 filesystem - this will erase all data. The "-c" option will check for

bad blocks (read-only), "-L" is the volume label:

sudo umount /dev/sdb1

sudo mkfs.ext3 -c -L oraclexe /dev/sdb1

Install the pmount distribution package:

sudo apt-get install pmount

Login as root:

sudo su -

Cut & paste the following into the command prompt (not a text editor):

cat > /etc/init.d/oracle-mount <<-EOF

#! /bin/sh

# /etc/init.d/oracle-mount

#

VOL_UUID=alphanumeric

VOL_LABEL=oraclexe

VOL_SYMLINK=/u01

mount=/usr/bin/pmount

#

uuid2dev() {

VOL_DEVICE="\`blkid | grep \$VOL_UUID | awk '{print \$1}'\`"

VOL_DEVICE="\`echo \$VOL_DEVICE | tr -d ':'\`"

echo \$VOL_DEVICE

}

case "\$1" in

start)

echo "Starting script /etc/init.d/oracle-mount"

uuid2dev

\$mount \$VOL_DEVICE \$VOL_LABEL

if [ -d /media/\$VOL_LABEL ]; then

echo "Mount \$VOL_DEVICE success"

ln -sf /media/\$VOL_LABEL \$VOL_SYMLINK

else

echo "Error mouting \$VOL_DEVICE"

fi

;;

stop)

echo "Stopping script /etc/init.d/oracle-mount"

uuid2dev

/bin/umount \$VOL_DEVICE 2>/dev/null

if [ "\`/usr/bin/pmount | /bin/grep \$VOL_DEVICE\`" ]; then

echo "Error unmounting \$VOL_DEVICE"

else

rm -f \$VOL_SYMLINK

fi

;;

*)

echo "Usage: /etc/init.d/oracle-u01 {start|stop}"

exit 1

;;

esac

#

### BEGIN INIT INFO

# Provides: oracle-mount

# Required-Start: \$remote_fs \$syslog

# Required-Stop: \$remote_fs \$syslog

# Default-Start: 2 3 4 5

# Default-Stop: 0 1 6

# Short-Description: Start daemon at boot time

# Description: Mount hotplug-usb drive and create symlink

### END INIT INFO

EOF

Install the oracle-mount init script:

chmod 755 /etc/init.d/oracle-mount

update-rc.d oracle-mount defaults 01 99

Get the UUID of the volume "oraclexe" and update the VOL_UUID in the init script accordingly:

uuid=`blkid | grep oraclexe | awk '{print $3}'`

echo $uuid

sed -i "s/^VOL_UUID=.*/VOL_$uuid/g" /etc/init.d/oracle-mount

The UUID of your device will be a unique number, but should be similar to:

UUID="3f5e9963-b328-49f3-b3e8-a3561ae34106"

Logout of root and test the init script:

exit

sudo /etc/init.d/oracle-mount stop

ls /u01

sudo /etc/init.d/oracle-mount start

ls /u01

Your output should look like:

Stopping script /etc/init.d/oracle-mount

/dev/sdb1

ls: cannot access /u01: No such file or directory

Starting script /etc/init.d/oracle-mount

/dev/sdb1

Mount /dev/sdb1 success

lost+found

7) ORA-00845: MEMORY_TARGET

Oracle 11gR2 XE under Ubuntu 11.10 will result in "ORA-00845: MEMORY_TARGET not

support on this system" either at Oracle database startup or during the initial installation. Ubuntu

11.10 uses a new version of the "systemd" system and session manager and has migrated away from

/dev/shm and other common directories in favor of /run.

There are several ways how to address the problem. You can either enable /dev/shm shared memory,

or change the default memory management of Oracle 11g from AMM (Automatic Memory

Management) to ASMM (Automatic Shared Memory Management) as it was in used the previous

10g version. Since AMM is one of the new features of 11g, the following will show you how to

make to make AMM work.

Login as root:

sudo su -

Cut & paste the following into the command prompt (not a text editor):

cat > /etc/init.d/oracle-shm <<-EOF

#! /bin/sh

# /etc/init.d/oracle-shm

#

#

case "\$1" in

start)

echo "Starting script /etc/init.d/oracle-shm"

# Run only once at system startup

if [ -e /dev/shm/.oracle-shm ]; then

echo "/dev/shm is already mounted, nothing to do"

else

rm -f /dev/shm

mkdir /dev/shm

mount -B /run/shm /dev/shm

touch /dev/shm/.oracle-shm

fi

;;

stop)

echo "Stopping script /etc/init.d/oracle-shm"

echo "Nothing to do"

;;

*)

echo "Usage: /etc/init.d/oracle-shm {start|stop}"

exit 1

;;

esac

#

### BEGIN INIT INFO

# Provides: oracle-shm

# Required-Start: $remote_fs $syslog

# Required-Stop: $remote_fs $syslog

# Default-Start: 2 3 4 5

# Default-Stop: 0 1 6

# Short-Description: Bind /run/shm to /dev/shm at system startup.

# Description: Fix to allow Oracle 11g use AMM.

### END INIT INFO

EOF

Install the oracle-shm init script:

chmod 755 /etc/init.d/oracle-shm

update-rc.d oracle-shm defaults 01 99

Restart the system:

reboot

Verify the success:

sudo cat /etc/mtab | grep shm

none /run/shm tmpfs rw,nosuid,nodev 0 0

/run/shm /dev/shm none rw,bind 0 0

The upper limit of shared memory under Linux is set to 50 % of the installed RAM by default. If

your system has less than 2 GB of RAM installed, there is still a chance to run into ORA-00845

error if your shared memory is used by other software.

The verify available shared memory, type the following commands:

sudo df -h /run/shm

8) Installing Oracle 11gR2 Express Edition

The final release version of Oracle 11gR2 Express Edition can be downloaded for free at

http://otn.oracle.com/database/express-edition/downloads. The software should automatically

downloaded into the "Downloads" folder of your home directory.

Enter the following commands to unpack the installer:

cd ~/Downloads

unzip oracle-xe-11.2.0-1.0.x86_64.rpm.zip

rm oracle-xe-11.2.0-1.0.x86_64.rpm.zip

The Debian Linux based package management of Ubuntu is not compatible with the Red Hat

package manager. The Oracle installer needs to be converted using the following commands:

cd ~/Downloads/Disk1

sudo alien --to-deb --scripts oracle-xe-11.2.0-1.0.x86_64.rpm

(This may take a few minutes)

rm oracle-xe-11.2.0-1.0.x86_64.rpm

The following needs to be set for compatibility:

sudo ln -s /usr/bin/awk /bin/awk

sudo mkdir /var/lock/subsys

Ubuntu uses different tools to manage services and system startup scripts. The "chkconfig" tool

required by the Oracle installer is not available in Ubuntu. The following will create a file to

simulate the "chkconfig" tool.

Login as root:

sudo su -

Copy & paste the following directly into the command prompt to create a file:

cat > /sbin/chkconfig <<-EOF

#!/bin/bash

# Oracle 11gR2 XE installer chkconfig hack for Debian based Linux (by dude)

# Only run once.

echo "Simulating /sbin/chkconfig..."

if [[ ! \`tail -n1 /etc/init.d/oracle-xe | grep INIT\` ]]; then

cat >> /etc/init.d/oracle-xe <<-EOM

#

### BEGIN INIT INFO

# Provides: OracleXE

# Required-Start: \\\$remote_fs \\\$syslog

# Required-Stop: \\\$remote_fs \\\$syslog

# Default-Start: 2 3 4 5

# Default-Stop: 0 1 6

# Short-Description: Oracle 11g Express Edition

### END INIT INFO

EOM

fi

update-rc.d oracle-xe defaults 80 01

EOF

Exit root:

exit

Set execute privileges:

sudo chmod 755 /sbin/chkconfig

Install Oracle 11gR2 Express Edition entering the following commands:

cd ~/Downloads/Disk1

sudo dpkg --install ./oracle-xe_11.2.0-2_amd64.deb

(This may take a couple of minutes)

Run the configuration script to create (clone) the database and follow the screen. Accept the default

answers, including "y" to startup the database automatically, or modify as required.

sudo /etc/init.d/oracle-xe configure

(This can take a few minutes - the installation completed successfully.)

To verify success, the procedure should end showing:

Starting Oracle Net Listener...Done

Configuring database...Done

Starting Oracle Database 11g Express Edition instance...Done

Installation completed successfully.

Set a password for the Oracle account:

sudo passwd oracle

9) Post-Installation

In order to use sqlplus and other tools, the Oracle account requires specific environment variables.

The following will set these variables automatically at every Oracle login:

Login as the Oracle user:

su - oracle

Copy the default account skeleton files and add the Oracle env script to .profile:

cp /etc/skel/.bash_logout ./

cp /etc/skel/.bashrc ./

cp /etc/skel/.profile ./

echo "" >>./.profile

echo '. /u01/app/oracle/product/11.2.0/xe/bin/oracle_env.sh' >>./.profile

By default, the Oracle Database XE graphical user interface is only available at the local server, but

not remotely. The following will enable remote logins:

Login as the Oracle user:

su - oracle

Login as SYSDBA and execute the following:

sqlplus / as sysdba

SQL> EXEC DBMS_XDB.SETLISTENERLOCALACCESS(FALSE);

exit

See http://download.oracle.com/docs/cd/E17781_01/admin.112/e18585/toc.htm for more

information.

a) Unity desktop configurations

The Oracle XE menu under the previous Gnome Classic desktop shows several useful scripts to

backup the database, start and stop the database, etc. Under the Unity based desktop this menu is

not available. You can either switch to the Gnome Classic desktop as outlined in chapter 2, or

perform the following steps to modify and copy the scripts as outlined below. The start and stop

database scripts will also be modified to perform a progress feedback.

Login as user root:

sudo su -

Convert desktop files:

cd /usr/share/applications

sed -i 's/Categories.*/Categories=Database;Office;Development;/g' oraclexe*

sed -i 's/MultipleArgs/X-MultipleArgs/g' oraclexe*

sed -i 's/MimeType.*/MimeType=application\/x-database/g' oraclexe*

sed -i 's/.png//g' oraclexe*

sed -i 's/Terminal=false/Terminal=true/g' oraclexe-startdb.desktop

sed -i 's/Terminal=false/Terminal=true/g' oraclexe-stopdb.desktop

Exit root:

exit

Login as user Oracle:

su - oracle

Modify database start and stop scripts:

cd /u01/app/oracle/product/11.2.0/xe/config/scripts

cp startdb.sh start.sh_orig

cp stopdb.sh stopdb.sh_orig

sed -i 's/>.*//g' startdb.sh

sed -i 's/>.*//g' stopdb.sh

You will need SYSDBA privileges and set Oracle environment variables in order to use your

regular user account.

Login to your regular user account:

su - dude

Enter the folowing command:

sudo usermod -a -G dba dude

Then update your profile to automatically set the necessary Oracle environment variables:

echo "" >>./.profile

echo '. /u01/app/oracle/product/11.2.0/xe/bin/oracle_env.sh' >>./.profile

Update your Desktop folder to contain useful Oracle XE scripts:

cp /usr/share/applications/oraclexe* ~/Desktop

chmod 750 ~/Desktop/oraclexe*

To verify success re-login and try "sqlplus":

su - oracle

sqlplus / as sysdba

10) Tips and Troubleshooting

10. a) Port 1521 appears to be in use by another application

Error: Port 1521 appears to be in use by another application. Specify a different port.

This error happens after a previously unsuccessful configuration attempt using /etc/init.d/oracle-xe

configure script. The script was able to start the Listener process, but most likely failed to continue

to clone the database, e.g. ORA-00845. The following should correct the problem:

Determine the oracle listener process that is already running:

$ ps -ef | grep oracle

Your output should be similar to:

oracle 19789 1 0 19:46 ? 00:00:00

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

Then kill the process, using the appropriate process id, for instance:

$ sudo kill -9 19789

10.b) cannot touch `/var/lock/subsys/listener': No such file or directory

Starting Oracle Net Listener...touch: cannot touch `/var/lock/subsys/listener': No such file or

directory

This error occurs when you run /etc/init.d/oracle-xe configure, but failed the preinstallation step to

create the /var//lock/subsys directory as outlined in chapter 8.

10.c) ORA-00845: MEMORY_TARGET

ORA-00845: MEMORY_TARGET not supported on this system

See chapter 7 to enable /dev/shm and verify free space available in /run/shm

10.d) Apex ADMIN password

According to the Oracle documentation, the password for the INTERNAL and ADMIN Oracle

Application Express user accounts is initially the same as the SYS and SYSTEM administrative

user accounts. Well, I tried several times without success. To reset the Apex Admin password:

Login as user oracle:

su - oracle

Login as SYSDBA and type the following:

sqlplus / as sysdba

At the SQL prompt, type the following to be prompted to change the password:

SQL> @?/apex/apxxepwd.sql

exit

When done, open your browser and go to http://127.0.0.1:8080/apex

Workspace: Internal

Username: ADMIN

Password: password you set with apxxepwd.sql

I will prompt you to reset the password:

old password: password you set with apxxepwd.sql

new password: final_password

You can also login as the Apex Admin using http://127.0.0.1:8080/apex/apex_admin

10.e) SYS and SYSTEM password

Use the following commands to reset the SYS and SYSTEM passwords if necessary:

Login as the Oracle user:

su - oracle

Login as SYSDBA and type the following at the SQL prompt:

sqlplus / as sysdba

SQL> alter user sys identified by "password" account unlock;

SQL> alter user system identified by "password" account unlock;

SQL> exit

10.f) Uninstall Oracle 11g XE

The following will completely uninstall and remove Oracle 11g XE:

Open a terminal seesion and login as user root:

sudo su -

Enter the following:

/etc/init.d/oracle-xe stop

dpkg --purge oracle-xe

rm -r /u01/app

rm /etc/default/oracle-xe

update-rc.d -f oracle-xe remove

update-rc.d -f oracle-mount remove

update-rc.d -f oracle-shm remove

10.g) Reconfigure Oracle 11g XE

Type the following commands in a terminal window:

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

sudo rm /etc/default/oracle-xe

sudo /etc/init.d/oracle-xe configure

10.h) Gnome Classic desktop

Ubuntu 11 moved from the Gnome Classic desktop to Unity and removed the "Ubuntu Classic"

login option. Unity was designed to make more efficient use of space given a limited screen size

and touch screens. If you prefer to use the Gnome Classic desktop, enter the following into a

terminal window:

sudo apt-get install gnome-panel

To log into the Gnome Classic desktop, select the "Gearwheel" at the login screen and select

"Gnome Classic".

10.i) Unix vi cursor keys

The instructions in this tutorial do not require the use of any text editor. However, if you would like

use the backspace and cursor keys in the "vi-editor", the following needs to be installed:

sudo apt-get install vim

10.j) Backup Database

In order to perform an online database backup using the supplied "Backup Database" script, the

database needs to run in Archive-Log mode. This can be setup using the following commands:

Login as the Oracle user:

su - oracle

Login as SYSDBA and type the following:

sqlplus / as sysdba

SQL> shutdown immediate

SQL> startup mount

SQL> alter database archivelog;

SQL> alter database open;

SQL> exit

11) History

Version: A, 24-Oct-2011

- first release

Version: B, 25-Oct-2011

- reduced instructions.

- corrected errors in 6a and 8.

- new strategy addressing ORA-00845 error.

- rework of chapter 10.

Version: C, 30-Nov-2011

- corrected typo in 6a

- new procedures in 9a.

- added progress feedback to database scripts.

Version D, 14-Jan-2012

- corrected presentation errors.

- reorganized instructions.

12) References

http://download.oracle.com/docs/cd/E17781_01/install.112/e18802/toc.htm

http://askubuntu.com/questions/57297/why-has-var-run-been-migrated-to-run

http://lwn.net/Articles/436012/

https://forums.oracle.com/forums/thread.jspa?threadID=2300750&tstart=0

Kind regards and best of luck!

Dude.