No of datafiles limit...
I want to know how many data files we can create in the database?
I want to know as per 9i,10g,11g
Thanks,
Only if you would search through the documentation - the result in this case happens to be the same for all versions.
<quote>
Database files
Maximum per database *65533*
May be less on some operating systems
Limited also by size of database blocks and by the DB_FILES initialization parameter for a particular instance
<quote>
Similar Messages
-
Hi All,
One of our DB which is running on version 7.1 which reached max datafile limit. I think the only option is to recreate the control file, now my question is can I recreate control file by increasing maxdatafile value in 7.1 version, will 7.1 support control file recreation...?
Satya.sorry about that we posted at the same time re: os version
according to that link if I read it correctly it says that VMS has a limit of 1022 file Per DB.
do you have a test env that you could test this first, that would be your best bet. if not maybe you could create a small scratch database to test this first. -
Oracle 11gR2 Express Edition on Linux Ubuntu 11.10 howto
h1. 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.
Oracle 11gR2 Express Edition on Linux Ubuntu 11.10 howto
h2. 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.
h2. Topics
h4. 1) Install Linux Ubuntu
h4. 2) Remote Terminal
h4. 3) Install Additional Software
h4. 4) Managing Swap Space
h4. 5) Modify Kernel Parameters
h4. 6) Oracle Home Directory
...a) Resize the Root Partition
...b) Setup External Storage
h4. 7) ORA-00845: MEMORY_TARGET
h4. 8) Installing Oracle 11gR2 Express Edition
h4. 9) Post-Installation
h4. 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
h4. 11) History
h4. 12) References
h2. 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..."
h2. 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-serverYou 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 [email protected], 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.
h2. 3) Install Additional Software
Oracle 11g Express Edition requires additional software that is not installed by default:
sudo apt-get install alien libaio1 unixodbch2. 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 kBYou 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 -aCreate 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/fstabExit 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 -2Swap 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.
h2. 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
EOFLoad 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.
h2. 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.
h3. 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.
{code}
After the system has restarted, open a terminal command shell.
Login as root:
{code}
sudo su -
{code}
Backup "fstab" and add the UUID of the partition. The "tr" command remove the quotes:
{code}
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
{code}
The UUID is a unique number and should look similar to:
{code}
UUID=d1db753e-b5dd-4a4c-a61e-259c69867b58
{code}
Restart the system:
{code}
reboot
{code}
Verify the success:
{code}
df -h /u01
{code}
h3. 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:
{code}
sudo parted -l
{code}
Look for the device that matches your USB storage. For example: /dev/sdb1
{code}
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
{code}
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:
{code}
sudo umount /dev/sdb1
sudo mkfs.ext3 -c -L oraclexe /dev/sdb1
{code}
Install the pmount distribution package:
{code}
sudo apt-get install pmount
{code}
Login as root:
{code}
sudo su -
{code}
Cut & paste the following into the command prompt (not a text editor):
{code}
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
{code}
Install the oracle-mount init script:
{code}
chmod 755 /etc/init.d/oracle-mount
update-rc.d oracle-mount defaults 01 99
{code}
Get the UUID of the volume "oraclexe" and update the VOL_UUID in the init script accordingly:
{code}
uuid=`blkid | grep oraclexe | awk '{print $3}'`
echo $uuid
sed -i "s/^VOL_UUID=.*/VOL_$uuid/g" /etc/init.d/oracle-mount
{code}
The UUID of your device will be a unique number, but should be similar to:
{code}
UUID="3f5e9963-b328-49f3-b3e8-a3561ae34106"
{code}
Logout of root and test the init script:
{code}
exit
sudo /etc/init.d/oracle-mount stop
ls /u01
sudo /etc/init.d/oracle-mount start
ls /u01
{code}
Your output should look like:
{code}
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
{code}
h2. 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:
{code}
sudo su -
{code}
Cut & paste the following into the command prompt (not a text editor):
{code}
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
{code}
Install the oracle-shm init script:
{code}
chmod 755 /etc/init.d/oracle-shm
update-rc.d oracle-shm defaults 01 99
{code}
Restart the system:
{code}
reboot
{code}
Verify the success:
{code}
sudo cat /etc/mtab | grep shm
{code}
{code}
none /run/shm tmpfs rw,nosuid,nodev 0 0
/run/shm /dev/shm none rw,bind 0 0
{code}
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:
{code}
sudo df -h /run/shm
{code}
h2. 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:
{code}
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
{code}
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:
{code}
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
{code}
The following needs to be set for compatibility:
{code}
sudo ln -s /usr/bin/awk /bin/awk
sudo mkdir /var/lock/subsys
{code}
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:
{code}
sudo su -
{code}
Copy & paste the following *directly* into the command prompt to create a file:
{code}
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
{code}
Exit root:
{code}
exit
{code}
Set execute privileges:
{code}
sudo chmod 755 /sbin/chkconfig
{code}
Install Oracle 11gR2 Express Edition entering the following commands:
{code}
cd ~/Downloads/Disk1
sudo dpkg --install ./oracle-xe_11.2.0-2_amd64.deb
(This may take a couple of minutes)
{code}
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.
{code}
sudo /etc/init.d/oracle-xe configure
(This can take a few minutes - the installation completed successfully.)
{code}
To verify success, the procedure should end showing:
{code}
Starting Oracle Net Listener...Done
Configuring database...Done
Starting Oracle Database 11g Express Edition instance...Done
Installation completed successfully.
{code}
Set a password for the Oracle account:
{code}
sudo passwd oracle
{code}
h2. 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:
{code}
su - oracle
{code}
Copy the default account skeleton files and add the Oracle env script to .profile:
{code}
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
{code}
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:
{code}
su - oracle
{code}
Login as SYSDBA and execute the following:
{code}
sqlplus / as sysdba
SQL> EXEC DBMS_XDB.SETLISTENERLOCALACCESS(FALSE);
exit
{code}
See http://download.oracle.com/docs/cd/E17781_01/admin.112/e18585/toc.htm for more information.
h3. 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:
{code}
sudo su -
{code}
Convert desktop files:
{code}
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
{code}
Exit root:
{code}
exit
{code}
Login as user Oracle:
{code}
su - oracle
{code}
Modify database start and stop scripts:
{code}
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
{code}
You will need SYSDBA privileges and set Oracle environment variables in order to use your regular user account.
Login to your regular user account:
{code}
su - dude
{code}
Enter the folowing command:
{code}
sudo usermod -a -G dba dude
{code}
Then update your profile to automatically set the necessary Oracle environment variables:
{code}
echo "" >>./.profile
echo '. /u01/app/oracle/product/11.2.0/xe/bin/oracle_env.sh' >>./.profile
{code}
Update your Desktop folder to contain useful Oracle XE scripts:
{code}
cp /usr/share/applications/oraclexe* ~/Desktop
chmod 750 ~/Desktop/oraclexe*
{code}
To verify success re-login and try "sqlplus":
{code}
su - oracle
sqlplus / as sysdba
{code}
h2. 10) Tips and Troubleshooting
h3. 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:
{code}
$ ps -ef | grep oracle
{code}
Your output should be similar to:
{code}
oracle 19789 1 0 19:46 ? 00:00:00 /u01/app/oracle/product/11.2.0/xe/bin/tnslsnr
{code}
Then kill the process, using the appropriate process id, for instance:
{code}
$ sudo kill -9 19789
{code}
h3. 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 directoryThis 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.
h3. 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
h3. 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:
{code}
su - oracle
{code}
Login as SYSDBA and type the following:
{code}
sqlplus / as sysdba
{code}
At the SQL prompt, type the following to be prompted to change the password:
{code}
SQL> @?/apex/apxxepwd.sql
exit
{code}
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
h3. 10.e) SYS and SYSTEM password
Use the following commands to reset the SYS and SYSTEM passwords if necessary:
Login as the Oracle user:
{code}
su - oracle
{code}
Login as SYSDBA and type the following at the SQL prompt:
{code}
sqlplus / as sysdba
SQL> alter user sys identified by "password" account unlock;
SQL> alter user system identified by "password" account unlock;
SQL> exit
{code}
h3. 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:
{code}
sudo su -
{code}
Enter the following:
{code}
/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
{code}
h3. 10.g) Reconfigure Oracle 11g XE
Type the following commands in a terminal window:
{code}
sudo /etc/init.d/oracle-xe stop
sudo rm /etc/default/oracle-xe
sudo /etc/init.d/oracle-xe configure
{code}
h3. 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:
{code}
sudo apt-get install gnome-panel
{code}
To log into the Gnome Classic desktop, select the "Gearwheel" at the login screen and select "Gnome Classic".
h3. 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:
{code}
sudo apt-get install vim
{code}
h3. 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:
{code}
su - oracle
{code}
Login as SYSDBA and type the following:
{code}
sqlplus / as sysdba
SQL> shutdown immediate
SQL> startup mount
SQL> alter database archivelog;
SQL> alter database open;
SQL> exit
{code}
h2. 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.
h3. 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.Excellent Blog. Thank You
Small clarification on Step **6) Oracle Home Directory, ...a) Resize the Root Partition**
Ubuntu 11.10 has Gparted available as a Ubuntu software download, DONT use that while trying the above step, instead download the ISO file from http://sourceforge.net/projects/gparted/files/gparted-live-stable/ gparted-live-0.12.0-5.iso (124.6 MB)
Burn that ISO file on a Blank DVD, reboot the Ubuntu , during startup select Boot from DVD Option if not already selected. this will take to Boot Menu Options of Gparted Live then select the first menu option, and this allows to do further action such as Re-sizing .
and once you have chosen and executed step a) . do NOT run step b) also that is "Setup External Storage"
I hope this minor clarification can avoid some confusion
Regards
Madhusudhan Rao
Edited by: MadhusudhanRao on Mar 24, 2012 11:30 PM -
Oracle11g heterogenous data guard Linux-ASM primary, Windows-Filesystem standby
Is it possible to setup a standby database on (Windows 64bit) OS filesystem with 32GB datafile limit that syncs with a primary database on (Linux 64bit) ASM that has datafiles that are larger than 32GB.
There is a Linux-ASM standby in place, this will be an additional standby, to be used as a reporting database using Oracle11g snapshot standby
I have used datapump to export-import from Linux-ASM to Windows-filesystem by precreating additional 32GB datafiles in the Windows database, the import works, it takes too long to import for a reporting database
it's not clear to me how to synchronize the new standby without using RMAN full or incremental backup-restores
Any suggestions or suggested document IDs are welcome!
Thank you,
Drew SalisburyHi Drew,
Standby files have to be the same size/distribution as the primary - that can be differnet os, in ASM etc but they have to be the same number and size.
There are some ways to speed up import - parallel etc but in a big database there is always a lot of time lost in index building post data load.
How feasible is it to shrink the datafiles in wondows nack to 32GB......?
Can you set up ASM on windows?
You could use streams or something to replicate and keep the copy you created up to date rather than using physical standby?
Cheers,
Rich -
Linux performance for LVM vs independent partition on 10G XE?
Hi groups,
I am a programmer and now requested to evaluate using Oracle 10G XE to replace MySQL for some of running web application. I remember the old experience that when playing with oracle 8i with linux, the guideline said that datafile of oracle should be placed at a independent partition. I m now testing XE with SUSE Enterprise 9, which using LVM(logical volume management).
So far there's not seen guideline that talking about if 10G XE should using dependent partition. And the case is that SUSE using LVM that application see multiple physical partitions as one logicial partition. This is totally an opposite to what Oracle intended for using independent partition. I would like is that the 4GB datafile limit make this not a concern?
I m not a DBA, thus hoping some gurus can give me some advise. Thanks!You can separate the redo logs, tablespaces etc in XE onto separate disks if you want. It's a manual exercise but there is nothing to stop you from doing it.
But as Andrea mentioned, this is largely an exercise in futility given that XE is 4 Gb of data and a single CPU. If performance is an issue then you would probably be better to use Standard Edition or Standard Edition One that gives you greater control, and also includes advanced storage management techniques such as Automatic Storage Management.
The default install of XE should be more than adequate for the majority of usages that XE is targeted at. With one proviso - the production release will use a defined flashback recovery area (FRA) for some of the online redo logs, archived redo logs, and backupsets.
We would strongly recommend that if you have more than 1 disk, then the FRA should be placed on a seperate disk other than the one that holds the database. -
What is the limit size for a datafile
Hello,
I want to create a tablespace that is going to be 500 gigs large. I want to create two datafiles for this tablespace. I am thinking 250 gigs each. What is the max size a datafile can be? Can I have 2 datafiles (250+250=500)? Thanks.There is a limit, you may read this reference --> Re: Max size of datafiles
~ Madrid -
Recover datafile that has extended beyond OS limit?
We have a Linux server running Oracle 8.1.7 and we have a data file (users01.dbf) that had "autoextend" enabled and has now grown past the upper limit of the underlying filesystem. Oracle will not open the file, as the OS returns an error: "Linux Error: 75: Value too large for defined data type"
Here are some details:
OS: Redhat 7
Filesystem: Ext2
Oracle Ver: 8.1.7
DBF Size: >2gb
I have attempted to copy the .dbf files to a new server with little luck. Redhat 10 with Oracle 10 complained that the ctl files were corrupt, so I deleted them and recreated them based on the data files. After that, the DB indicated that the datafiles needed a media recovery, so I performed a "recover datafile..." on each of them successfully. Once I try to open the database, I get a "End of communication channel" error. I cannot mount it in Windows as the blocksizes are different (8192 vs. 4096)
I am at the end of my ideas on how to recover this file. Any suggestions?
I have thought of:
1. Bring a copy of 8.1.7 up on a new Redhat system running a newer FS (Reiser) and try to open the file
2. Add a new drive to the old sever and format that with the new FS, copy the dbf files there and point the DB to those files
Any tools that I try to run on the old server all hit the roadblock of the Linux:75 error.
Thanks for any ideas that come to mind.Can you give more detail about how you tried to copy the database files?
First, I assume you are copying with the database down right?
I would not change versions of Oracle during the copy, only the OS.
SuSE Linux Enterprise Server 8 will work with your version of Oracle but I cannot from memory remember what its OS limit is.
I would research either Suse 9 or Red Hat 9 and see if they work with your version of Oracle and support larger file limits.
This site appears not to have info on Oracle 8 http://www.puschitz.com/
However, he can had it in the past and he might provide some help.
I like the copy idea, but I think you might lose some data.
I'm thinking you will try this if you iron out the OS issue
Start the database mount
SQLPLUS> alter database recover database until cancel using backup controlfile;
SQLPLUS> alter database recover cancel;
SQLPLUS> alter database open resetlogs;
I wish you luck and no loss of data! -
Hi,
Is there any maximum datafile size limit? May I resize my datafiles to, let's say, more than 4GB size?
(OS: RHEL4 32bit, DB: 10.2.0.3)
Thanks!http://download.oracle.com/docs/cd/B19306_01/server.102/b14237/limits002.htm#i287915
<quote>
Database file size Maximum Operating system dependent. Limited by maximum operating system file size; typically 2^22 or 4 MB blocks
<quote>
So give it a try. -
What happens if AUTOEXTEND is ON and datafile reaches the limit?
Hi,
I´m using Oracle 11g. I have created a tablespace using the following command:
CREATE TABLESPACE MYTABLESPACE
DATAFILE '<PATH>'
SIZE 1G AUTOEXTEND ON EXTENT MANAGEMENT LOCAL AUTOALLOCATE;
The datafile is almost full. The question is: given that AUTOEXTEND is ON, will a new datafile be created automatically when the original datafile reaches the limit? (datafile is SMALLFILE)
I would appreciate your help.
Thank you,998043 wrote:
Hi,
I´m using Oracle 11g. I have created a tablespace using the following command:
CREATE TABLESPACE MYTABLESPACE
DATAFILE '<PATH>'
SIZE 1G AUTOEXTEND ON EXTENT MANAGEMENT LOCAL AUTOALLOCATE;
The datafile is almost full. The question is: given that AUTOEXTEND is ON, will a new datafile be created automatically when the original datafile reaches the limit? (datafile is SMALLFILE)
I would appreciate your help.
Thank you,File stops expanding & error is thrown. -
Is ther any limit for size of datafile, if we mention maxsize unlimited
Hi,
We has ASM with oracle enterpirse linux ( Linux xxxxx.net 2.6.18-92.1.17.0.1.el5 #1 SMP Tue Nov 4 17:10:53 EST 2008 x86_64 x86_64 x86_64 GNU/Linux) and database is 11gR2.
Question is , if i add a datafile with maxsize unlimited ( example below syntax), What will be the maxsize of the datafile, it can grow to?
alter database datafile '+DATA_DG/user/datafile/useridx.376.752379021' autoextend on next 8k maxsize unlimited;
Thanksif i add a datafile with maxsize unlimited ( example below syntax), What will be the maxsize of the datafile, it can grow to?For smallfile tablespaces (the default) it's 4M blocks. For 8K block size DBs it's 32G.
http://download.oracle.com/docs/cd/E11882_01/server.112/e17110/limits002.htm#i287915 -
URGENT - db datafile number limit
Hi,
we are using Oracle 9.2.0.4 with a db size about of 23TB. In details, we want to use more or less 6000 dbf. in this way we have the size of dbf from 1.14GB (medium size) to 5.82GB (max size).
please let me know your feedback for a datafile number and size
thank you
regards
FrancescoHi,
I tried to restore/recovery database based on to time procedure Any backups available from before the point in time (=PIT)?
Are you running in archivelog mode?
Can you post the output of this sql
select p.handle||' '|| d.completion_time
from v$backup_datafile d,
v$backup_piece p
where d.file#=4
and p.set_count = d.set_count
and p.set_stamp = d.set_stamp
/Regards,
Tycho -
Error while doing an expdp on a large datafile
Hello,
I tried an export using expdp in oracle 10g express edition. It was working perfectly until when the db size reached 2.1 gb. I got the following error message:
---------------- Start of error message ----------------
Connected to: Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production
Starting "SERVICE_2_8"."SYS_EXPORT_SCHEMA_05": service_2_8/******** LOGFILE=3_export.log DIRECTORY=db_pump DUMPFILE=service_2_8.dmp CONTENT=all
Estimate in progress using BLOCKS method...
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
ORA-39125: Worker unexpected fatal error in KUPW$WORKER.GET_TABLE_DATA_OBJECTS while calling DBMS_METADATA.FETCH_XML_CLOB []
ORA-01116: error in opening database file 5
ORA-01110: data file 5: '/usr/lib/oracle/xe/oradata/service_3_0.dbf'
ORA-27041: unable to open file
Linux Error: 13: Permission denied
Additional information: 3
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 95
ORA-06512: at "SYS.KUPW$WORKER", line 6235
----- PL/SQL Call Stack -----
object line object
handle number name
0x3b3ce18c 14916 package body SYS.KUPW$WORKER
0x3b3ce18c 6300 package body SYS.KUPW$WORKER
0x3b3ce18c 9120 package body SYS.KUPW$WORKER
0x3b3ce18c 1880 package body SYS.KUPW$WORKER
0x3b3ce18c 6861 package body SYS.KUPW$WORKER
0x3b3ce18c 1262 package body SYS.KUPW$WORKER
0x3b0f9758 2 anonymous block
Job "SERVICE_2_8"."SYS_EXPORT_SCHEMA_05" stopped due to fatal error at 03:04:34
---------------- End of error message ----------------
Selinux was disabled completely and I have put the permission of 0777 to the appropriate datafile.
Still, it is not working.
Can you please tell me how to solve this problem or do you have any ideas or suggestions regarding this?Hello rgeier,
I cannot access this tablespace which is service_3_0 (2.1 gb) through a php web-application or through sqlplus. I can access a small tablespace which is service_2_8 through the web-application or through sqlplus. When I tried to access service_3_0 through sqlplus, the following error message was returned:
---------------- Start of error message ----------------
ERROR at line 1:
ORA-01116: error in opening database file 5
ORA-01110: data file 5: '/usr/lib/oracle/xe/oradata/service_3_0.dbf'
ORA-27041: unable to open file
Linux Error: 13: Permission denied
Additional information: 3
---------------- End of error message ----------------
The following are the last eset of entries in the alert_XE.log file in the bdump folder:
---------------- Start of alert log ----------------
db_recovery_file_dest_size of 40960 MB is 9.96% used. This is a
user-specified limit on the amount of space that will be used by this
database for recovery-related files, and does not reflect the amount of
space available in the underlying filesystem or ASM diskgroup.
Wed Aug 20 05:13:59 2008
Completed: alter database open
Wed Aug 20 05:19:58 2008
Shutting down archive processes
Wed Aug 20 05:20:03 2008
ARCH shutting down
ARC2: Archival stopped
The value (30) of MAXTRANS parameter ignored.
kupprdp: master process DM00 started with pid=27, OS id=7463 to execute - SYS.KUPM$MCP.MAIN('SYS_EXPORT_SCHEMA_06', 'SERVICE_2_8', 'KUPC$C_1_20080820054031', 'KUPC$S_1_20080820054031', 0);
kupprdp: worker process DW01 started with worker id=1, pid=28, OS id=7466 to execute - SYS.KUPW$WORKER.MAIN('SYS_EXPORT_SCHEMA_06', 'SERVICE_2_8');Wed Aug 20 05:40:48 2008
The value (30) of MAXTRANS parameter ignored.
The value (30) of MAXTRANS parameter ignored.
The value (30) of MAXTRANS parameter ignored.
The value (30) of MAXTRANS parameter ignored.
The value (30) of MAXTRANS parameter ignored.
---------------- End of alert log ---------------- -
How to limit the number of rows in a report
I have several reports with a number of parameters - date ranges etc.
Depending on the parameter values selected by the user the reports can return thousands of rows.
I would like to limit the number of rows returned to, say, 500. If more than 500 rows are returned by the query then display an error message requesting that the user enter more specific parameters.
Ideally for performance reasons it would be good to catch the error before the datafile is generated, but I don't know if this is possible. Alternatively a check in the template might do the job - using COUNT on the group?.Hi Hugh,
In your query, you got to add rowum < 500 or some sort of DB specific limit to the row being returned,
this will help to stop the report to get more than 500 records and the report template wont have any restriction.
or
you can do that in template too, but i would not recommend.
In these both cases or in any case, you cannot give any meaningful error if it exceeds N rows,there is no option like this till now. -
Error in opening datafile after use of DATAFILE RESIZE command
Hi Friends,
I am facing a strange problem here. We got a space problem yesterday ORA-01659: unable to allocate MINEXTENTS beyond 42 in tablespace and I increased the underlying datafiles using resize command. The datafiles were 1G earlier and I have increased them to 2G using the command
ALTER DATABASE DATAFILE 4 resize 2G;
It went fine and I saw the free space in my tablespace. But after this when I try to drop a table using a script which connects to this db as a schema owner ( the script just selects all tables from dictionary and drops it using 'drop table x cascade constraints' , It thorws the following error
ERROR at line 1:
ORA-01116: error in opening database file 4
ORA-01110: data file 4: '/SAN/p0/oradb/CBA11/data/avient01CBA11.dbf'
ORA-27092: size of file exceeds file size limit of the process
Additional information: 132104
Additional information: 262145
On going through metalink, I found that there could be problems with ulimit parameter in the OS. My OS is SunOS 5.8 Generic_117350-28 sun4u sparc SUNW,Sun-Fire-480R and my oracle version is 10.2.0.1.0 . I have set the ulimit parameters for file size to unlimited for both hard limit and soft limit.
airsun10 oracle [CBA11]:ulimit -aS
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) unlimited
stack(kbytes) 8192
coredump(blocks) unlimited
nofiles(descriptors) 256
vmemory(kbytes) unlimited
airsun10 oracle [CBA11]:ulimit -aH
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) unlimited
stack(kbytes) unlimited
coredump(blocks) unlimited
nofiles(descriptors) 256
vmemory(kbytes) unlimited
airsun10 oracle [CBA11]:ulimit -Ss unlimited
airsun10 oracle [CBA11]:ulimit -aS
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) unlimited
stack(kbytes) unlimited
coredump(blocks) unlimited
nofiles(descriptors) 256
vmemory(kbytes) unlimited
airsun10 oracle [CBA11]:ulimit -aH
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) unlimited
stack(kbytes) unlimited
coredump(blocks) unlimited
nofiles(descriptors) 256
vmemory(kbytes) unlimited
airsun10 oracle [CBA11]:
These solutions are suggested as per MOS note ID 271331.1. However the issue is still persisting. I am not getting any clue on whats happening. Any help is appreciated.
Thanks
SSNThanks for your hint.
yes, I did and the following is something more strange. I can't figure out !!
The ulimit is only different for stack for hard and soft. file size is still unlimited. The same drop table doesn't allow me when I connect as schema owner directly !
airsun10 oracle [CHANGEME]:whoami
oracle
airsun10 oracle [CHANGEME]:ulimit -aS
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) unlimited
stack(kbytes) 8192
coredump(blocks) unlimited
nofiles(descriptors) 256
vmemory(kbytes) unlimited
airsun10 oracle [CHANGEME]:ulimit -aH
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) unlimited
stack(kbytes) unlimited
coredump(blocks) unlimited
nofiles(descriptors) 1024
vmemory(kbytes) unlimited
airsun10 oracle [CHANGEME]:cd drop_cts/
/export/home/oracle/drop_cts
airsun10 oracle [CHANGEME]:ls
drop.sql on.lst run_drop.sql sql
drop_objects recompile_objects run_dropObj.sql
airsun10 oracle [CHANGEME]:cat drop.sql
drop table BID_STATUSES cascade constraints;
drop table BID_TYPES cascade constraints;
drop table BID_TYPES_IN_SETS cascade constraints;
airsun10 oracle [CHANGEME]:sqlplus cts_owner/cts_owner@CBA11
SQL*Plus: Release 10.2.0.1.0 - Production on Fri Oct 8 10:02:06 2010
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
SQL> @drop.sql
drop table BID_STATUSES cascade constraints
ERROR at line 1:
ORA-01116: error in opening database file 4
ORA-01110: data file 4: '/SAN/p0/oradb/CBA11/data/avient01CBA11.dbf'
ORA-27092: size of file exceeds file size limit of the process
Additional information: 132104
Additional information: 183107
drop table BID_TYPES cascade constraints
ERROR at line 1:
ORA-01116: error in opening database file 4
ORA-01110: data file 4: '/SAN/p0/oradb/CBA11/data/avient01CBA11.dbf'
ORA-27092: size of file exceeds file size limit of the process
Additional information: 132104
Additional information: 183107
drop table BID_TYPES_IN_SETS cascade constraints
ERROR at line 1:
ORA-01116: error in opening database file 4
ORA-01110: data file 4: '/SAN/p0/oradb/CBA11/data/avient01CBA11.dbf'
ORA-27092: size of file exceeds file size limit of the process
Additional information: 132104
Additional information: 183107
SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
airsun10 oracle [CHANGEME]:export ORACLE_SID=CBA11
airsun10 oracle [CBA11]:sqlplus /nolog
SQL*Plus: Release 10.2.0.1.0 - Production on Fri Oct 8 10:02:29 2010
Copyright (c) 1982, 2005, Oracle. All rights reserved.
SQL> conn cts_owner/cts_owner
Connected.
SQL> drop table BID_STATUSES cascade constraints;
Table dropped.
SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
airsun10 oracle [CBA11]: -
What is the maximum possible size of a datafile...??
Hi experts,
My DB is 10.2.0.1.0 , running on AIX.
MAXDATAFILE set on the database is 200.
Now , the number of datafiles crossed 188.
SQL> select count(*) from dba_data_files;
COUNT(*)
188
Now I do not want to add any more datafiles instead I would go for resizing the same.
Please suggest what would be the maximum limit of a datafile size ?
Regards,
Chotu.Re: Max size of datafiles
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