Installing Oracle Database 11g Release 1 on Enterprise Linux 5

Part I: Installing Enterprise Linux 5

This section describes how to install Oracle Enterprise Linux 5 (OEL5) on your hardware (but the same steps will apply for RHEL5). Please take a moment to make sure that your hardware meets or exceeds the minimum hardware requirements for Oracle Database 11g Release 1.

Minimum hardware requirements:

32-bit (x86)

x86 compatible CPU
1 GB RAM
10 GB available disk space (3.5 GB for the Oracle software + 1.5 GB for the database + 3 GB for OEL5 + 2 GB swap)

64-bit (x86_64)

x86_64 compatible CPU
1 GB RAM
10.5 GB available disk space (4 GB for the Oracle software + 1.5 GB for the database + 3 GB for OEL5 + 2 GB swap)

Note: Both Linux and Oracle must be installed for the same architecture. 32-bit Oracle will only run on 32-bit Linux and 64-bit Oracle will only run on 64-bit Linux.

Now, let's walk through the process of installing the Linux operating system on a server. The instructions assume a fresh install of Linux (as opposed to an upgrade), that the server will be dedicated to Oracle, and that no other operating systems or data are on the server.

Oracle Database 11g Release 1 is certified to run the base release of OEL5 without updates. Free copies of OEL5 are available for download.

Boot the server using the first CD or DVD
- You may need to change your BIOS settings to allow booting from the CD/DVD.
The boot screen appears with the boot: prompt at the bottom of the screen.
- Select Enter to continue with a graphical install on the console.
- The installer scans your hardware
Oracle Enterprise Linux splash screen
- Click on Next
Language Selection
- Accept the default.
Keyboard Configuration
- Accept the default.
Install or Upgrade
- Select Install and click on Next
Disk Partitioning Setup
- A thorough treatment of disk partitioning is beyond the scope of this guide, which assumes that you are familiar with disk partitioning methods.
  WARNING: Improperly partitioning a disk is one of the surest and fastest ways to wipe out everything on your hard disk. If you are unsure how to proceed, stop and get help, or you will risk losing data!)
- Accept the default partition layout. Note that the default layout is sufficient for an evaluation, but would not be appropriate for other purposes. The default layout may create a swap partition that is smaller than the Oracle guidelines recommend. This is also sufficient for an evaluation.
Network Configuration
- It is usually best to configure database servers with a static IP address. To do so, click on Edit .
- A pop-up window appears. Uncheck the Configure using DHCP box, and enter the IP Address and Netmask for the server. Be sure that Activate on boot is checked, and click on OK .
- In the Hostname box, select manually and enter the hostname.
- In the Miscellaneous Settings box, enter the remaining network settings.
Time Zone Selection
- Choose the time settings that are appropriate for your area. Setting the system clock to UTC is usually a good practice for servers. To do so, select on System clock uses UTC.
Set Root Password
- Enter a password for root, and enter it again to confirm.
Package Installation
- This guide will follow the Oracle recommended practice of using a "default RPMs" installation. Accept the default software selection and click on Next.
- Additional RPMs are required to run Oracle Database 11g Release 1. These will be installed later.
Installing Packages
- Software will be copied to the hard disk and installed. Change disks as prompted.
After software installation is complete
- Remove any boot CD/DVD media.
- Click on Next.
Welcome
- Click on Forward
License Agreement
- Read the license agreement. If you agree to the terms, select Yes, I agree to the License Agreement and click on Forward.
Firewall Configuration
- For the purposes of this walk-through, no firewall is configured. Select Disabled and click on Forward.
- Click on Yes when the "Warning - No Firewall" window appears.
SELinux
- Select Disabled from the drop down bar and click on Forward.
Kdump
- Do not enable Kdump. Accept the default and click on Forward.
Date and Time
- Set the Date and Time.
- If you want to use an NTP server (recommended), select Enable Network Time Protocol and enter the name of the NTP server.
System User
- Create an account for yourself.
- Do not create an account for oracle at this time. Creating the oracle account is covered later in this section.
Sound Card
- Configure the sound card, if any, and click on Forward.
Additional CDs
- Click on Finish.
The system will reboot
A graphical login screen appears.
Congratulations! Your OEL5 software is now installed.

Installing Required Packages

Additional Linux software packages must be installed before installing the Oracle software. The package requirements differ for 32-bit and 64-bit architectures, so this section contains separate instructions for each architecture.

32-bit (x86) Installations

Required kernel version: 2.6.18 This kernel, or any of the kernels supplied in updates, works with Oracle Database 11g Release 1 .

Check your kernel version by running the following command:

uname -r

Ex:
# uname -r
2.6.18-8.el5

Required package versions (or later):

compat-libstdc++-33-3.2.3-61
elfutils-libelf-0.125-3.el5
elfutils-libelf-devel-0.125-3.el5
glibc-2.5-12
glibc-devel-2.5-12
glibc-common-2.5-12
gcc-4.1.1-52.el5
gcc-c++-4.1.1-52.el5
kernel-headers
libgcc-4.1.1-52.el5
libaio-0.3.106-3.2
libaio-devel-0.3.106-3.2
libstdc++-4.1.1-52.el5
libstdc++-devel-4.1.1-52.el5
unixODBC-2.2.11-7.1
unixODBC-devel-2.2.11-7.1
sysstat-7.0.0-3.el5
binutils-2.17.50.0.6-2.el5
make-3.81-1.1

If you've performed a "default RPMs" install as suggested by Oracle, there are still some required packages that must be installed:

compat-libstdc++-33
elfutils-libelf-devel
glibc-devel-2.5
gcc
gcc-c++
libaio-devel
libstdc++-devel
unixODBC
unixODBC-devel
sysstat

To install the remaining packages, mount the Oracle Enterprise Linux media and move to the directory containing the RPMs.

Some required packages are dependent upon other packages, so the dependant packages must be installed as well. Login as root and run the following commands to install the remaining required packages and their dependent packages. (Warning: packages often move from disk to disk across different releases.)

Mount CD 2

cd cd_mount_point/Server

rpm -ivh elfutils-libelf-devel* glibc-devel-2* glibc-headers-2* gcc-4* libgomp-4* gcc-c++-4* libstdc++-devel-4*

Ex:
# rpm -ivh elfutils-libelf-devel* glibc-devel-2* glibc-headers-2* gcc-4* libgomp-4* gcc-c++-4* libstdc++-devel-4*
warning: compat-libstdc++-33-3.2.3-61.i386.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159
Preparing... ########################################### [100%]
1:libgomp ########################################### [ 25%]
2:glibc-headers ########################################### [ 33%]
3:glibc-devel ########################################### [ 42%]
4:gcc ########################################### [ 50%]
5:gcc-c++ ########################################### [ 58%]
6:elfutils-libelf-devel-s########################################### [ 92%]
7:elfutils-libelf-devel ########################################### [100%]
8:libstdc++-devel-4 ########################################### [100%]

Mount CD 3

cd cd_mount_point/Server

rpm -ivh compat-libstdc++-33* libaio-devel* sysstat*
unixODBC*

Ex:
# rpm -ivh compat-libstdc++-33* libaio-devel* sysstat* unixODBC*
warning: sysstat-7.0.0-3.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159
Preparing... ########################################### [100%]
1:unixODBC ########################################### [ 8%]
2:libaio-devel ########################################### [ 75%]
3:compat-libstdc++-33 ########################################### [ 83%]
4:sysstat ########################################### [100%]

To verify that the required packages have been installed on your system, run the following command:

rpm -q compat-libstdc++-33 elfutils-libelf-devel glibc-devel-2.5 gcc gcc-c++ libaio-devel libstdc++-devel \
unixODBC unixODBC-devel sysstat binutils elfutils-libelf glibc glibc-common libaio libgcc libstdc++ make

Ex:
# rpm -q compat-libstdc++-33 elfutils-libelf-devel glibc-devel-2.5 gcc gcc-c++ libaio-devel libstdc++-devel \

> unixODBC unixODBC-devel sysstat binutils elfutils-libelf glibc glibc-common libaio libgcc libstdc++ make

compat-libstdc++-33-3.2.3-61

elfutils-libelf-devel-0.125-3.el5

glibc-devel-2.5-12

gcc-4.1.1-52.el5

gcc-c++-4.1.1-52.el5

libaio-devel-0.3.106-3.2

libstdc++-devel-4.1.1-52.el5

unixODBC-2.2.11-7.1

unixODBC-devel-2.2.11-7.1

sysstat-7.0.0-3.el5

binutils-2.17.50.0.6-2.el5

elfutils-libelf-0.125-3.el5

glibc-2.5-12

glibc-common-2.5-12

libaio-0.3.106-3.2

libgcc-4.1.1-52.el5

libstdc++-4.1.1-52.el5

make-3.81-1.1

64-bit (x86_64) Installations

Required kernel version: 2.6.18 This kernel, or any of the kernels supplied in updates, works with Oracle Database 11g Release 1 .

Check your kernel version by running the following command:

uname -rm

Ex:
# uname -rm
2.6.18-8.el5 x86_64

Required package versions (or later):

binutils-2.17.50.0.6
compat-libstdc++-33-3.2.3
compat-libstdc++-33-3.2.3 (32 bit)
elfutils-libelf-0.125
elfutils-libelf-devel-0.125
gcc-4.1.1
gcc-c++-4.1.1
glibc-2.5-12
glibc-2.5-12 (32 bit)
glibc-common-2.5
glibc-devel-2.5
glibc-devel-2.5-12 (32 bit)
libaio-0.3.106
libaio-0.3.106 (32 bit)
libaio-devel-0.3.106
libgcc-4.1.1
libgcc-4.1.1 (32 bit)
libstdc++-4.1.1
libstdc++-4.1.1 (32 bit)
libstdc++-devel 4.1.1
make-3.81
sysstat-7.0.0

Note that there are a number of packages where both the 64-bit and 32-bit RPMs must be installed. Fortunately, both are provided on the 64-bit Linux installation media.

If you've performed a "default RPMs" install as suggested by Oracle, there are still some required packages that must be installed:

compat-libstdc++-33-3.2.3
compat-libstdc++-33-3.2.3 (32 bit)
elfutils-libelf-devel-0.125
gcc-4.1.1
gcc-c++-4.1.1
glibc-devel-2.5
glibc-devel-2.5-12 (32 bit)
libaio-devel-0.3.106
libstdc++-devel 4.1.1
sysstat-7.0.0

To install the remaining packages, mount the Oracle Enterprise Linux media and move to the directory containing the RPMs.

Mount CD 2

mount -t iso9660 -r /dev/cdrom /media
cd /media/Server

rpm -ivh elfutils-libelf-devel*.x86_64.rpm glibc-devel-2* gcc-4*.x86_64.rpm gcc-c++-4*.x86_64.rpm libstdc++-devel-4*.x86_64.rpm glibc-headers*.x86_64.rpm libgomp*.x86_64.rpm

Ex:
# rpm -ivh elfutils-libelf-devel*.x86_64.rpm glibc-devel-2* gcc-4*.x86_64.rpm gcc-c++-4*.x86_64.rpm libstdc++-devel-4*.x86_64.rpm glibc-headers*.x86_64.rpm libgomp*.x86_64.rpm
warning: elfutils-libelf-devel-0.125-3.el5.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159
Preparing... ########################################### [100%]
1:glibc-headers ########################################### [ 11%]
2:glibc-devel ########################################### [ 22%]
3:libgomp ########################################### [ 33%]
4:gcc ########################################### [ 44%]
5:libstdc++-devel ########################################### [ 56%]
6:gcc-c++ ########################################### [ 67%]
7:glibc-devel ########################################### [ 78%]
8:elfutils-libelf-devel-s########################################### [ 89%]
9:elfutils-libelf-devel ########################################### [100%]

cd /
eject

Mount CD 3

mount -t iso9660 -r /dev/cdrom /media
cd /media/Server

rpm -ivh compat-libstdc++-33* libaio-devel*.x86_64.rpm

Ex:
# rpm -ivh compat-libstdc++-33* libaio-devel*.x86_64.rpm
warning: compat-libstdc++-33-3.2.3-61.i386.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159
Preparing... ########################################### [100%]
1:libaio-devel ########################################### [ 33%]
2:compat-libstdc++-33 ########################################### [ 67%]
3:compat-libstdc++-33 ########################################### [100%]

cd /
eject

Mount CD 4

mount -t iso9660 -r /dev/cdrom /media
cd /media/Server

rpm -ivh sysstat*

Ex:
# rpm -ivh sysstat*
warning: sysstat-7.0.0-3.el5.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 1e5e0159
Preparing... ########################################### [100%]
1:sysstat ########################################### [100%]

To verify that the required packages have been installed on your system, run the following command:

rpm -q --queryformat "%{NAME}-%{VERSION}-%{RELEASE} (%{ARCH})\n" binutils \
compat-libstdc++-33 elfutils-libelf elfutils-libelf-devel gcc gcc-c++ glibc \
glibc-common glibc-devel-2.5 libaio libaio-devel libgcc libstdc++ libstdc++-devel \
make sysstat

Ex:
# rpm -q --queryformat "%{NAME}-%{VERSION}-%{RELEASE} (%{ARCH})\n" binutils \

> compat-libstdc++-33 elfutils-libelf elfutils-libelf-devel gcc gcc-c++ glibc \

> glibc-common glibc-devel-2.5 libaio libaio-devel libgcc libstdc++ libstdc++-devel \

> make sysstat

binutils-2.17.50.0.6-2.el5 (x86_64)

compat-libstdc++-33-3.2.3-61 (i386)

compat-libstdc++-33-3.2.3-61 (x86_64)

elfutils-libelf-0.125-3.el5 (x86_64)

elfutils-libelf-devel-0.125-3.el5 (x86_64)

gcc-4.1.1-52.el5 (x86_64)

gcc-c++-4.1.1-52.el5 (x86_64)

glibc-2.5-12 (i686)

glibc-2.5-12 (x86_64)

glibc-common-2.5-12 (x86_64)

glibc-devel-2.5-12 (x86_64)

glibc-devel-2.5-12 (i386)

libaio-0.3.106-3.2 (x86_64)

libaio-0.3.106-3.2 (i386)

libaio-devel-0.3.106-3.2 (x86_64)

libgcc-4.1.1-52.el5 (x86_64)

libgcc-4.1.1-52.el5 (i386)

libstdc++-4.1.1-52.el5 (x86_64)

libstdc++-4.1.1-52.el5 (i386)

libstdc++-devel-4.1.1-52.el5 (x86_64)

make-3.81-1.1 (x86_64)

sysstat-7.0.0-3.el5 (x86_64)

Part II: Configuring Linux for Oracle

Now that the Linux software is installed, you need to configure it for Oracle. This section walks through the steps required to configure Linux for Oracle Database 11g Release 1.

Create the Oracle Groups and User Account

Next, create the Linux groups and user account that will be used to install and maintain the Oracle Database 11g Release 1 software. The user account will be called oracle, and the groups will be oinstall and dba. Execute the following commands as root:

/usr/sbin/groupadd oinstall
/usr/sbin/groupadd dba
/usr/sbin/useradd -m -g oinstall -G dba oracle
id oracle

Ex:
# /usr/sbin/groupadd oinstall
# /usr/sbin/groupadd dba
# /usr/sbin/useradd -m -g oinstall -G dba oracle
# id oracle
uid=501(oracle) gid=502(oinstall) groups=502(oinstall),503(dba)

Set the password on the oracle account:

passwd oracle

Ex:
# passwd oracle
Changing password for user oracle.
New password:
Retype new password:
passwd: all authentication tokens updated successfully.

Create Directories

Now create directories to store the Oracle Database 11g Release 1 software and the database files. This guide adheres to the Optimal Flexible Architecture (OFA) for the naming conventions used in creating the directory structure. For more information on OFA standards, see Appendix D of the Oracle Database Installation Guide 11g Release 1 (11.1) for Linux.

The following assumes that the directories are being created in the root filesystem. This is done for the sake of simplicity and is not recommended as a general practice. These directories would normally be created as separate filesystems.

Issue the following commands as root:

mkdir -p /u01/app/oracle
chown -R oracle:oinstall /u01/app
chmod -R 775 /u01/app

Configuring the Linux Kernel Parameters

Oracle Database 11g Release 1 requires the kernel parameter settings shown below. The values given are minimums, so if your system uses a larger value, don't change it. Linux allows modification of most kernel parameters while the system is up and running, so there's no need to reboot the system after making kernel parameter changes.

kernel.shmall = 2097152
kernel.shmmax = 536870912
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000
net.core.rmem_default=4194304
net.core.wmem_default=262144
net.core.rmem_max=4194304
net.core.wmem_max=262144

Note that OEL 5 already has values defined for kernel.shmall and kernel.shmmax. Use the default values if they are the same or larger than the required values.

If you're following along and have just installed Linux, the kernel parameters will all be at their default values and you can just cut and paste the following commands while logged in as root.

cat >> /etc/sysctl.conf <<EOF
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000
net.core.rmem_default=4194304
net.core.wmem_default=262144
net.core.rmem_max=4194304
net.core.wmem_max=262144
EOF

/sbin/sysctl -p

Ex:
# cat >> /etc/sysctl.conf <<EOF

net.ipv4.ip_local_port_range = 1024 65000

net.core.rmem_default=262144

> kernel.shmmni = 4096

> kernel.sem = 250 32000 100 128

> fs.file-max = 65536

> net.ipv4.ip_local_port_range = 1024 65000

> net.core.rmem_default=4194304

> net.core.wmem_default=262144

> net.core.rmem_max=4194304

> net.core.wmem_max=262144

> EOF

# /sbin/sysctl -p

net.ipv4.ip_forward = 0

net.ipv4.conf.default.rp_filter = 1

net.ipv4.conf.default.accept_source_route = 0

kernel.sysrq = 0

kernel.core_uses_pid = 1

net.ipv4.tcp_syncookies = 1

kernel.msgmnb = 65536

kernel.msgmax = 65536

kernel.shmmax = 4294967295 begin_of_the_skype_highlighting 4294967295 end_of_the_skype_highlighting

kernel.shmall = 268435456

kernel.shmmni = 4096

kernel.sem = 250 32000 100 128

fs.file-max = 65536

net.ipv4.ip_local_port_range = 1024 65000

net.core.rmem_default = 4194304

net.core.wmem_default = 262144

net.core.rmem_max = 4194304

net.core.wmem_max = 262144

Run the following commands as root to verify your settings:

Setting shell limits for the oracle user

Oracle recommends setting limits on the number of processes and open files each Linux account may use. To make these changes, cut and paste the following commands as root:

cat >> /etc/security/limits.conf <<EOF
oracle soft nproc 2047
oracle hard nproc 16384
oracle soft nofile 1024
oracle hard nofile 65536
EOF

cat >> /etc/pam.d/login <<EOF
session required pam_limits.so
EOF

Change the default profile for bash and ksh as well as the default login script for cshell.

cat >> /etc/profile <<EOF
if [ \$USER = "oracle" ]; then
if [ \$SHELL = "/bin/ksh" ]; then
ulimit -p 16384
ulimit -n 65536
else
ulimit -u 16384 -n 65536
fi
umask 022
fi
EOF

cat >> /etc/csh.login <<EOF
if ( \$USER == "oracle" ) then
limit maxproc 16384
limit descriptors 65536
umask 022
endif
EOF

Part III: Installing Oracle

Oracle Database 11g Release 1 can be downloaded from OTN. Oracle offers a development and testing license free of charge. However, no support is provided and the license does not permit production use. A full description of the license agreement is available on OTN.

The easiest way to make the Oracle Database 11g Release 1 distribution media available on your server is to download them directly to the server.

Use the graphical login to log in as oracle.

Create a directory to contain the Oracle Database 11g Release 1 distribution:

mkdir 11gR1_db

To download Oracle Database 11g Release 1 from OTN, point your browser to the Oracle Database Download Page. Read the OTN License agreement. If you agree with the restrictions and the license agreement, click on Accept License Agreement.

Click on the Linux x86 link (32-bit) or Linux x86-64 link (64-bit) and save the file in the directory you created for this purpose (11gR1_db)—if you have not already logged in to OTN, you may be prompted to do so at this point.

Unzip and extract the file.

cd 11gR1_db

For 32-bit
unzip linux_11gR1_database.zip

For 64-bit

unzip linux.x64_11gR1_database.zip

Install the Software and Create a Database

Change directory to the directory containing the Oracle Database 11g Release 1 software.

Ex:
$ cd $HOME/11gR1_db/database

Start the Oracle Universal Installer.

$ ./runInstaller

Select Installation Method
Specify Inventory Directory and Credentials
Product-specific Prerequisite Checks
- If you've been following the steps in this guide, all the checks should pass without difficulty. You may receive a warning related to swap file size if the default partition layout was used during OEL5 installation. This may be safely ignored . If one or more checks fail, correct the problem before proceeding.
- Click on Next
Oracle Configuration Manager Registration
- Leave this disabled for the demo and click on Next
Summary
- A summary of the products being installed is presented.
- Click on Install.
Install
- Installation progress is displayed
Configuration Assistants
- The Oracle Net, Oracle Database, and iSQL*Plus configuration assistants will run automatically
- Take note of the information presented in the Database Configuration Assistant pop-up window and click on OK.
Execute Configuration Scripts
- At the end of the installation, a pop up window will appear indicating scripts that need to be run as root. Login as root and run the indicated scripts.
- Click on OK when finished.
End of Installation
- Make note of the URLs presented in the summary, and click on Exit when ready.
Congratulations! Your new Oracle Database 11g Release 1 database is up and ready for use.

Part IV: Configuring Storage

The database we created in Part III used a single filesystem for disk storage. However, there are several other ways to configure storage for an Oracle database.

This section explores other methods of configuring disk storage for a database. In particular, it describes creating an additional filesystem and using Automatic Storage Management (ASM).

Partition the Disks

In order to use either file systems or ASM, you must have unused disk partitions available. This section describes how to create the partitions that will be used for new file systems and for ASM.

WARNING: Improperly partitioning a disk is one of the surest and fastest ways to wipe out everything on your hard disk. If you are unsure how to proceed, stop and get help, or you will risk losing data.

This example uses /dev/sda (an empty disk with no existing partitions) to create a single partition for the entire disk.

Ex:
# fdisk /dev/sda

The number of cylinders for this disk is set to 30401.

There is nothing wrong with that, but this is larger than 1024,

and could in certain setups cause problems with:

1) software that runs at boot time (e.g., old versions of LILO)

2) booting and partitioning software from other OSs

(e.g., DOS FDISK, OS/2 FDISK)

Command (m for help): p

Disk /dev/sda: 250.0 GB, 250059350016 bytes

255 heads, 63 sectors/track, 30401 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System

Command (m for help): n

Command action

e extended

p primary partition (1-4)

Partition number (1-4): 1

First cylinder (1-30401, default 1):

Using default value 1

Last cylinder or +size or +sizeM or +sizeK (1-30401, default 30401):

Using default value 30401

Command (m for help): w

The partition table has been altered!

Calling ioctl() to re-read partition table.

Syncing disks.

Now verify the new partition:

Ex:
# fdisk -l /dev/sda

Disk /dev/sda: 250.0 GB, 250059350016 bytes

255 heads, 63 sectors/track, 30401 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System

/dev/sda1 1 30401 244196001 83 Linux

Repeat the above steps for each disk to be partitioned. The following section on Filesystems uses a single disk partition, /dev/sda1. The ASM example uses two disks: /dev/sda1 and /dev/sdb1.

Filesystems

Filesystems are the most widely used means of storing data file, redo logs, and control files for Oracle databases. Filesystems are easy to implement and require no third-party software to administer.

In most cases, filesystems are created during the initial installation of Linux. However, there are times when a new filesystem must be created after the initial installation, such as when a new disk drive is being installed.

This section describes building a new filesystem and using it in an Oracle database. Unless otherwise noted, all commands must be run as root.

Create the Filesystem

Use ext3 to create this new filesystem. Other filesystems work just as well, but ext3 offers the fastest recovery time in the event of a system crash.

Ex:
# mke2fs -j /dev/sda1

mke2fs 1.39 (29-May-2006)

Filesystem label=

OS type: Linux

Block size=4096 (log=2)

Fragment size=4096 (log=2)

30539776 inodes, 61049000 blocks

3052450 blocks (5.00%) reserved for the super user

First data block=0

Maximum filesystem blocks=0

1864 block groups

32768 blocks per group, 32768 fragments per group

16384 inodes per group

Superblock backups stored on blocks:

32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,

4096000, 7962624, 11239424, 20480000, 23887872

Writing inode tables: done

Creating journal (32768 blocks): done

Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 28 mounts or

180 days, whichever comes first. Use tune2fs -c or -i to override.

Create the Mount Point

A filesystem must have a mount point, which is simply an empty directory where the new filesystem "attaches" to the system's directory tree. Mount points should be given names consistent with the Oracle Flexible Architecture (OFA) standard. For more information on OFA standards, see Appendix D of the Oracle Database Installation Guide 11g Release 1 (11.1) for Linux.

Because the /u01 directory was created in Part I, this example uses /u02.

Ex:
# mkdir /u02

Add the New Filesystem to /etc/fstab

So that the new filesystem will be mounted automatically when the system boots, you need to add a line to the /etc/fstab file that describes the new filesystem and where to mount it. Add a line similar to the one below to /etc/fstab, using a text editor.

/dev/sda1 /u02 ext3 defaults 1 2

Mount the New Filesystem

Mounting the filesystem makes it available for use. Until the filesystem is mounted, files cannot be stored in it. Use the following commands to mount the filesystem and verify that it is available.

mount /u02
df -h /u02

Ex:
# mount /u02
# df -h /u02
Filesystem Size Used Avail Use% Mounted on

/dev/sda1 230G 188M 218G 1% /u02

Create Oracle Directories and Set Permissions

Now create a directory to store your Oracle database files. The directory name used in the example follows the OFA standard naming convention for a database with ORACLE_SID=demo1.

mkdir -p /u02/app/oracle/oradata/demo1
chown -R oracle:oinstall /u02/app
chmod -R 775 /u02/app

Create a New Tablespace in the New Filesystem

The new filesystem is ready for use. Next you create a new tablespace in the filesystem to store your database objects. Connect to the database as the SYSTEM user, and execute the CREATE TABLESPACE statement, specifying the data file in the new filesystem.

Ex:
$ sqlplus

SQL*Plus: Release 11.1.0.6.0 - Production on Sun Nov 4 15:19:00 2007

Enter user-name: system

Enter password:

Connected to:

Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> create tablespace data1

2 datafile '/u01/app/oracle/oradata/demo1/data1_01.dbf' size 100m

3 extent management local

4 segment space management auto;

Tablespace created.

Now you can use the new tablespace to store database objects such as tables and indexes.

Ex:
SQL> create table demotab (id number(5) not null primary key,
2 name varchar2(50) not null,
3 amount number(9,2))
4 tablespace data1;

Table created.

Automatic Storage Management (ASM)

ASM is a disk storage option that provides the services of a filesystem, logical volume manager, and software RAID in a platform-independent manner. ASM can stripe and mirror your disks, allow disks to be added or removed while the database is under load, and automatically balance I/O to remove "hot spots." It also supports direct and asynchronous I/O and implements the Oracle Data Manager API (simplified I/O system call interface) introduced in Oracle9i.

ASM is not a general-purpose filesystem and can be used only for Oracle database related files. Files in ASM can be created and named automatically by the database (by use of the Oracle Managed Files feature) or manually by the DBA. ASM files are not accessible using operating system commands such as ls, cp, and dd. To manage ASM files, use Oracle Enterprise Manager or other Oracle provided methods.

ASM is implemented as a separate Oracle instance that must be running if other databases are to be able to access it. Memory requirements for ASM are light: only 64 MB for most systems.

Installing ASM

ASM can use a variety of storage types including raw partitions, RAID LUNs, and NFS files. For Linux systems, Oracle provides a custom device driver known as ASMLib, which is recommended for most ASM installations on Linux. ASMLib is available for free download from OTN. This section walks through the process of configuring a simple ASM instance using ASMLib 2.0 and building a database that uses ASM for disk storage.

Determine Which Version of ASMLib You Need

ASMLib 2.0 is delivered as a set of three RPM packages.

oracleasmlib-2.0 - the ASM libraries
oracleasm-support-2.0 - utilities needed to administer ASMLib
oracleasm - a kernel module for the ASM library that is specific to each kernel

Each Linux distribution has its own set of ASMLib 2.0 packages (OEL 5 uses the same RPMs as Red Hat Enterprise Linux 5 AS). Within each distribution, each kernel version has a corresponding oracleasm package. The following paragraphs describe how to determine which set of packages you need.

First, determine which kernel you are using by logging in as root and running the following command:

uname -rm

Ex:
# uname -rm
2.6.18-8.el5 i686

The example shows that this is a 2.6.18 kernel, patch level 8, for Enterprise Linux 5 on 32-bit x86 compatible hardware (i686).

Use this information to find the correct ASMLib packages on OTN:

Point your Web browser to http://www.oracle.com/technology/tech/linux/asmlib/index.html
Select the link for your version of Linux (OEL5 users may use the Red Hat Enterprise Linux 5 AS link).
Download the oracleasmlib and oracleasm-support packages for your version of Linux. The files are grouped by architecture (AMD64 / Intel em64t for x86_64, IA64 for Itanium, and IA32 for x86). At the top of each section is a Library and Tools heading. Download both of the files under this heading - these are the support utilities and ASM libraries (oracleasm-support and oracleasmlib, respectively).
Next, download the oracleasm package corresponding to your kernel. In the example above, the oracleasm-2.6.18-8.el5-2.0.4-1.el5.i686.rpm package was used. Note that there are two or three drivers listed under most of the kernel versions. For example:

Drivers for kernel 2.6.18-8.el5

* oracleasm-2.6.18-8.el5xen-2.0.4-1.el5.i686.rpm
* oracleasm-2.6.18-8.el5PAE-2.0.4-1.el5.i686.rpm
* oracleasm-2.6.18-8.el5-2.0.4-1.el5.i686.rpm

Choose only one of these. In this example, there are drivers for Xen (virtual machine architecture), PAE (for 32-bit systems with more than 4GB RAM), and the "standard" 32-bit kernel.
Next, install the packages by executing the following command as root:
rpm -Uvh oracleasm-kernel_version-asmlib_version.cpu_type.rpm \
oracleasmlib-asmlib_version.cpu_type.rpm \
oracleasm-support-asmlib_version.cpu_type.rpm

Ex:
# rpm -Uvh oracleasm-2.6.18-8.el5-2.0.4-1.el5.i686.rpm \
> oracleasm-support-2.0.4-1.el5.i386.rpm \
oracleasmlib-2.0.3-1.el5.i386.rpm
Preparing... ########################################### [100%]
1:oracleasm-support ########################################### [ 33%]
2:oracleasm-2.6.18-8.el5 ########################################### [ 67%]
3:oracleasmlib ########################################### [100%]

Configuring ASMLib

Before using ASMLib, you must run a configuration script to prepare the driver. Run the following command as root, and answer the prompts as shown in the example below.

# /etc/init.d/oracleasm configure

Configuring the Oracle ASM library driver.

This will configure the on-boot properties of the Oracle ASM library

driver. The following questions will determine whether the driver is

loaded on boot and what permissions it will have. The current values

will be shown in brackets ('[]'). Hitting <ENTER> without typing an

answer will keep that current value. Ctrl-C will abort.

Default user to own the driver interface []: oracle

Default group to own the driver interface []: dba

Start Oracle ASM library driver on boot (y/n) [n]: y

Fix permissions of Oracle ASM disks on boot (y/n) [y]: y

Writing Oracle ASM library driver configuration: [ OK ]

Loading module "oracleasm": [ OK ]

Mounting ASMlib driver filesystem: [ OK ]

Scanning system for ASM disks: [ OK ]

Next you tell the ASM driver which disks you want it to use. Oracle recommends that each disk contain a single partition for the entire disk. See Partitioning the Disks at the beginning of this section for an example of creating disk partitions.

Mark disks for use by ASMLib by running the following command as root:

/etc/init.d/oracleasm createdisk DISK_NAME device_name

Tip: Enter the DISK_NAME in UPPERCASE letters.

Ex:
# /etc/init.d/oracleasm createdisk VOL1 /dev/sda1
Marking disk "/dev/sdb1" as an ASM disk: [ OK ]
# /etc/init.d/oracleasm createdisk VOL2 /dev/sdb1
Marking disk "/dev/sdb1" as an ASM disk: [ OK ]

Verify that ASMLib has marked the disks:

# /etc/init.d/oracleasm listdisks
VOL1
VOL2

Create the ASM Instance

ASM runs as a separate Oracle instance which can be created and configured using the Oracle Universal Installer. Now that ASMLib is installed and the disks are marked for use, you can create an ASM instance.

$ ./runInstaller

Select Installation Method
- Select Advanced Installation
- Click on Next
Specify Inventory Directory and Credentials
- Inventory Directory: /u01/app/oraInventory
- Operating System group name: oinstall
- Click on Next
Select Installation Type
- Select Enterprise Edition
- Click on Next
Install Location
- Oracle Base: /u01/app/oracle
- Name: OraDB11gASM
- Path: /u01/app/oracle/product/11.1.0/asm
  Note:Oracle recommends using a different ORACLE_HOME for ASM than the ORACLE_HOME used for the database for ease of administration.
- Click on Next
Product-specific Prerequisite Checks
- If you've been following the steps in this guide, all the checks should pass without difficulty. If one or more checks fail, correct the problem before proceeding.
- Click on Next
Select Configuration Option
- Select Configure Automatic Storage Management (ASM)
- Enter the ASM SYS password and confirm
- Click on Next
Configure Automatic Storage Management
- Disk Group Name: DATA
- Redundancy
  - High mirrors data twice.
  - Normal mirrors data once. This is the default.
  - External does not mirror data within ASM. This is typically used if an external RAID array is providing redundancy.
- Add Disks
  The disks you configured for use with ASMLib are listed as Candidate Disks. Select each disk you wish to include in the disk group.
- Click on Next
Privileged Operating System Groups
- Database Administrator (OSDBA) Group: dba
- Database Operator (OSOPER) Group: dba
- ASM administrator (OSASM) Group: dba
- Click on Next
Oracle Configuration Manager Registration
- Leave this disabled for the demo
- Click on Next
Summary
- A summary of the products being installed is presented.
- Click on Install.
Install
- Installation progress is displayed
Execute Configuration Scripts
- At the end of the installation, a pop up window will appear indicating scripts that need to be run as root. Login as root and run the indicated scripts.
- Click on OK when finished.
Configuration Assistants
- The Oracle Net, Oracle Database, and iSQL*Plus configuration assistants will run automatically
End of Installation
- Cick on Exit
Congratulations! Your new Oracle ASM Instance is up and ready for use.

Create the Database

Once the ASM instance has been created, create a database that uses ASM for storage:

$ ./runInstaller

Select Installation Method
- Select Advanced Installation
- Click on Next
Select Installation Type
- Select Enterprise Edition
- Click on Next
Install Location
- Oracle Base: /u01/app/oracle
- Name: OraDb11g_home1
- Path: /u01/app/oracle/product/11.1.0/db_1
  Note:Oracle recommends using a different ORACLE_HOME for the database than the ORACLE_HOME used for ASM.
- Click on Next
Product-specific Prerequisite Checks
- If you've been following the steps in this guide, all the checks should pass without difficulty. If one or more checks fail, correct the problem before proceeding.
- Click on Next
Select Configuration Option
- Select Create a Database
- Click on Next
Select Database Configuration
- Select General Purpose
- Click on Next
Specify Database Configuration Options
- Enter the Global Database Name and SID
- Click on Next
Specify Database Config Options
- Accept the defaults or change as desired
- Click on Next
Select Database Management Option
- Select Use Database Control for Database Management
- Click on Next
Specify Database Storage Option
- Select Automatic Storage Management (ASM)
- Click on Next
Specify Backup and Recovery Options
- Select Do not enable Automated backups
- Click on Next
Select ASM Disk Group
- Select the DATA disk group created in the previous section
- Click on Next
Specify Database Schema Passwords
- Select Use the same password for all the accounts
- Enter the password and confirm
- Click on Next
Privileged Operating System Groups
- Database Administrator (OSDBA) Group: dba
- Database Operator (OSOPER) Group: dba
- ASM administrator (OSASM) Group: dba
- Click on Next
Oracle Configuration Manager Registration
- Leave this disabled for the demo
- Click on Next
Summary
- A summary of the products being installed is presented.
- Click on Install.
Configuration Assistants
- The Oracle configuration assistants will run automatically
- When the configuration is complete, a pop-up window will appear with information about the database. Make note of the URL and click on OK when ready.
Execute Configuration Scripts
- At the end of the installation, a pop up window will appear indicating scripts that need to be run as root. Login as root and run the indicated scripts.
- Click on OK when finished.
End of Installation
- Click on Exit
Congratulations! Your new Oracle Database is up and ready for use.