Category Archives: linux

Administration, hp-ux, linux, unix

Change time zone of Linux Server

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This procedure demonstrates the method to change the Time Zone of a typical Linux server.   NOTE:  Due to the number and variations LINUX distributions, this procedure may not work on all LINUX installs.   This procedure was performed on Oracle Enterprise Linux 7.2  (OEL 7.2).

 

  1. Logon to your Linux server as root.

 

[larry@linux2 ~]$ sudo su –

[sudo] password for larry:

Last login: Thu Nov  3 11:02:19 EDT 2016 on pts/1

[root@linux2 ~]#

 

 

  1. Change to directory /etc

 

[root@linux2 ~]# cd /etc

[root@linux2 etc]#

 

  1. Display the currently set system time with command date.

 

[root@linux2 etc]# date

Wed Nov 30 12:39:08 UTC 2016

[root@linux2 etc]#

 

  1. List the current setting to link /etc/localtime and remove link /etc/localtime, using the “rm –f” command.

 

[root@linux2 etc]# ls -l localtime

lrwxrwxrwx. 1 root root 23 Nov 30 14:22 localtime -> /usr/share/zoneinfo/UTC

[root@linux2 etc]# rm -rf localtime

[root@linux2 etc]#

 

  1. Create new link to directory /usr/share/zoneinfo/<your time zone> with you correct timezone.  In this example we are changing to EST.

 

ln -s /usr/share/zoneinfo/EST localtime

 

 

[root@linux2 etc]# ls -l localtime

lrwxrwxrwx. 1 root root 23 Nov 30 09:23 localtime -> /usr/share/zoneinfo/EST

[root@linux2 etc]#

 

  1. Execute linux date command to see new timezone.

 

[root@linux2 etc]# date

Wed Nov 30 09:25:40 EST 2016

[root@linux2 etc]#

 

  1. This completes changing the time zone on Linux server.

 

Larry Catt

OCP

 

12c, dbca, linux, Multitenant, Oracle, PDB

Create PDB in silent mode

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In Oracle 12c RDBMS you can use the Database Configuration Assistant to create a PDB from shell scripts or command line in an existing CDB.    You can provide all of the necessary parameters for the PDB creation through a response file or at the command prompt.   In this example we will provide all required command line option to create new PDB called pdb1 in the CDB1 container.

 

  1. Logon to your Oracle server as the Oracle software owner.

 

[root@linux2 ~]# su – oracle

Last login: Wed Oct  5 15:10:16 EDT 2016 on pts/2

[oracle@linux2 ~]$

 

  1. Define the following parameter with values:
    1. -sourceDB = the name of the CDB database you wish to create your PDB in.
    2. -pdbName = the name of the new PDB database.
    3. -pdbAdminPassword = password for the PDB admin user.

 

  1. You will have to also supply the tags: –silent and  -createPluggableDatabase

 

  1. Update the below DBCA command with the values defined in step 2.

 

dbca -silent -createPluggableDatabase -sourceDB cdb1 -pdbName pdb1 -pdbAdminPassword password

 

  1. Example execution.

 

[oracle@linux2 admin]$ dbca -silent -createPluggableDatabase -sourceDB cdb1 -pdbName pdb1 -pdbAdminPassword password

Creating Pluggable Database

4% complete                                                                                                                                         

12% complete

21% complete

38% complete

85% complete

Completing Pluggable Database Creation

100% complete

Look at the log file “/opt/app/oracle/cfgtoollogs/dbca/cdb1/pdb1/cdb1.log” for further details.

[oracle@linux2 admin]$

 

  1. View the status of the listener process to validate that the new PDB has been picked up by the listener with the command: lsnrctl status

 

[oracle@linux2 admin]$ lsnrctl status

 

LSNRCTL for Linux: Version 12.1.0.2.0 – Production on 20-OCT-2016 10:21:44

 

Copyright (c) 1991, 2014, Oracle.  All rights reserved.

 

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=10.30.15.75)(PORT=1521)))

STATUS of the LISTENER

————————

Alias                     LISTENER

Version                   TNSLSNR for Linux: Version 12.1.0.2.0 – Production

Start Date                19-OCT-2016 14:06:54

Uptime                    0 days 20 hr. 14 min. 50 sec

Trace Level               off

Security                  ON: Local OS Authentication

SNMP                      OFF

Listener Parameter File   /opt/app/oracle/product/12.1.0.2/db_1/network/admin/listener.ora

Listener Log File         /opt/app/oracle/diag/tnslsnr/linux2/listener/alert/log.xml

Listening Endpoints Summary…

  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.30.15.75)(PORT=1521)))

Services Summary…

Service “cdb1” has 2 instance(s).

  Instance “cdb1”, status UNKNOWN, has 1 handler(s) for this service…

  Instance “cdb1”, status READY, has 1 handler(s) for this service…

Service “cdb1XDB” has 1 instance(s).

  Instance “cdb1”, status READY, has 1 handler(s) for this service…

Service “pdb1” has 1 instance(s).

  Instance “cdb1”, status READY, has 1 handler(s) for this service…

The command completed successfully

[oracle@linux2 admin]$

 

 

  1. Update the tnsnames.ora file with the reference to newly created PDB1 with the command:

 

echo -e “PDB1 =\n” \

”  (DESCRIPTION =\n” \

”    (ADDRESS_LIST =\n” \

”      (ADDRESS = (PROTOCOL = TCP)(HOST = “`hostname -i`”)(PORT = 1521))\n” \

”    )\n” \

”    (CONNECT_DATA =\n” \

”      (SERVER = DEDICATED)\n”  \

”      (SERVICE_NAME = pdb1)\n” \

”    )\n” \

”  )\n” >> $ORACLE_HOME/network/admin/tnsnames.ora

 

Example execution:

 

[oracle@linux2 admin]$ echo -e “PDB1 =\n” \

> ”  (DESCRIPTION =\n” \

> ”    (ADDRESS_LIST =\n” \

> ”      (ADDRESS = (PROTOCOL = TCP)(HOST = “`hostname -i`”)(PORT = 1521))\n” \

> ”    )\n” \

> ”    (CONNECT_DATA =\n” \

”      (SERVER = DEDICATED)\n”  \

”      (SERVICE_NAME = pdb1)\n” \

”    )\n” \

”  )\n” >> $ORACLE_HOME/network/admin/tnsnames.ora> ”      (SERVER = DEDICATED)\n”  \

> ”      (SERVICE_NAME = pdb1)\n” \

> ”    )\n” \

> ”  )\n” >> $ORACLE_HOME/network/admin/tnsnames.ora

[oracle@linux2 admin]$

 

 

  1. Test connection to new PDB with the command: tnsping pdb1

 

[oracle@linux2 admin]$ tnsping pdb1

 

TNS Ping Utility for Linux: Version 12.1.0.2.0 – Production on 20-OCT-2016 10:32:32

 

Copyright (c) 1997, 2014, Oracle.  All rights reserved.

 

Used parameter files:

 

 

Used TNSNAMES adapter to resolve the alias

Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 10.30.15.75)(PORT = 1521))) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = pdb1)))

OK (0 msec)

[oracle@linux2 admin]$

 

 

  1. This completes the creation of new PDB in silent mode.

 

Larry Catt

OCP

12c, CDB, linux, Multitenant, PDB

Configure Linux for multiple Oracle Database connections

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You can have multiple database on a single server of any platform.    The key to this configuration is have the appropriate environmental parameter for the database you which to attach to.   This procedure demonstrates the setup of .bash_profile file to set the appropriate OS environmental parameters upon attachment as the Oracle software owner.  NOTE: This procedure was done on a Oracle Enterprise Linux server.

 

  1. Logon to your database server as the root user.

 

[larry@linux2 ~]$ su –

Password:

Last login: Wed Jan  7 08:49:18 EST 2016 on pts/1

[root@linux2 ~]#

 

  1. List the current databases running on your database server with command: ps –ef|grep smon

 

[root@linux2 ~]# ps -ef|grep smon

oracle    3793     1  0 08:47 ?        00:00:00 ora_smon_cdb1

oracle    6454     1  0 09:38 ?        00:00:00 ora_smon_orcl

root     15059 15008  0 13:44 pts/1    00:00:00 grep –color=auto smon

[root@linux2 ~]#

 

  1. From the ‘ps’ command, we can see there are two active database instance on this server: CDB1 and ORCL.   We need to adjust the .bash_profile file in the oracle software owner home directory to choose between these two instances at logon.
  2. Go to the home directory of your oracle software owner.

 

[root@linux2 ~]# cd /home/oracle

[root@linux2 oracle]#

 

  1. Now normal install of multiple databases on a single server will all use the same Oracle binaries, thus the only thing which will be different between the environmental variables will be the ORACLE_SID value. If something else is different, you can adjust the shell script below to allow for more variable definition.   In this example attach the following to end of the .bash_profile file with vi.

 

## Beginning of request for information

database=””

while [ -z “$db” ]

do

   echo “Enter database to use:”

   echo “1 – ORCL       “

   echo “2 – CDB1       “

   echo “Option > “

read db

   if [[ “$db” != “1” &&

         “$db” != “2” ]]

   then

      echo “$db” is not valid >&2

      db=””

   fi

done

## Ending of request for information </strong>

 

 

 

##Beginning of local variable definitions

if [[ $db = “1” ]]

then

   export ORACLE_SID=orcl

elif [[ $db = “2” ]]

then

   export ORACLE_SID=cdb1

else

   echo “Invalid options “

fi

## Ending of local variable definitions

 

  1. Now logon as the oracle software owner and you will be prompted to give 1 for orcl instance or 2 for cdb1. Any other options will produce nothing.

 

Choosing option 1 example:

 

[root@linux2 oracle]# su – oracle

Last login: Wed Jan  7 14:02:23 EST 2016 on pts/1

Enter database to use:

1 – ORCL

2 – CDB1

1

[oracle@linux2 ~]$ echo $ORACLE_SID

orcl

[oracle@linux2 ~]$

 

 

 

 

 

Choosing option 2 example:

 

[root@linux2 oracle]# su – oracle

Last login: Wed Jan  7 14:04:51 EST 2016 on pts/1

Enter database to use:

1 – ORCL

2 – CDB1

2

[oracle@linux2 ~]$ echo $ORACLE_SID

cdb1

[oracle@linux2 ~]$

 

 

Choosing option other than 1 or 2 example:

 

[root@linux2 oracle]# su – oracle

Last login: Wed Jan  7 14:12:24 EST 2016 on pts/1

Enter database to use:

1 – ORCL

2 – CDB1

Option >

3

3 is not valid

Enter database to use:

1 – ORCL

2 – CDB1

Option >

4

4 is not valid

Enter database to use:

1 – ORCL

2 – CDB1

Option >

 

 

 

  1. This completes setup of Linux for multiple Oracle Databases.

 

 

Larry Catt

OCP

 

12c, linux

Part 11 – Building Oracle 12c development suite – Installation of Oracle 12c

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Installation of Oracle 12c
Oracle Corporation provides the ability for developers to create a complete development suite on their personal windows desktop or laptop without requiring the expensive equipment required for a true production system. This article outlines the process for actual installation of Oracle 12c RDBMS Oracle Enterprise Linux 6.5 platform. This procedure assumes that Part 1 through Part 10 of this series has been complete successfully.
NOTE: This process can be used for most Linux installations, regardless of original company or organization providing the base Linux OS.

1. Logon to your Windows desktop/laptop as an administrator and open Oracle VirtualBox.
2. SSH to your OEL virtual server as the oracle software owner.
3. CD to the directory /opt/app/oracle_software/database that was created during part 10 of this series and execute the command ‘cp ./response/db_install.rsp .’

[root@oel65 oracle_software]# cp ./response/db_install.rsp .
[root@oel65 oracle_software]#

4. Open the file db_install.rsp and edit the variable “ORACLE_HOSTNAME” and make ORACLE_HOSTNAME equal to the correct server name for your VM.

5. As the oracle user, change directory to /opt/app/oracle_software/database and execute the command ‘./runInstaller -silent -responseFile /opt/app/oracle_software/database/db_install.rsp’

[root@oel65 database]# ./runInstaller –silent –responseFile /opt/app/oracle_software/database/db_install.rsp
Starting Oracle Universal Installer….
[root@oel65 database]#

6. Change to the user root with the command ‘su -‘ and execute the scripts “/opt/app/oracle_inventory/inventory/orainstRoot.sh” and “/opt/app/oracle/ucop_db/root.sh”

7. This completes the installation of Oracle 12c on your Linux VM.

Larry Catt, OCP

12c, linux, Oracle

Part 10 – Building Oracle 12c development suite – Preparing Linux OS for 12c installation

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Preparing Linux OS for 12c installation
Oracle Corporation provides the ability for developers to create a complete development suite on their personal windows desktop or laptop without requiring the expensive equipment required for a true production system. This article outlines the process for configuration of Oracle Enterprise Linux 6.5 installation in preparation for installation of Oracle 12c RDBMS.
NOTE: This process can be used for most Linux installations, regardless of original company or organization providing the base Linux OS.

1. Logon to your Windows desktop/laptop as an administrator and open Oracle VirtualBox.
2. Logon to your Linux Server as the root user and create the group “dba” and user account “oracle” to be your oracle software owner with the following commands:
groupadd dba
useradd oracle -g dba -G root
passwd oracle

3. Create the following directory structures to support your oracle software installation with the commands:
mkdir /opt/app
mkdir /opt/app/oracle
mkdir /opt/app/oracle_software
mkdir /opt/app/oracle_inventory
mkdir /opt/app/oracle_inventory/inventory

4. Change ownership of directory structures to the oracle software owner with the following commands:
chown oracle:dba /opt/app
chown oracle:dba /opt/app/oracle
chown oracle:dba /opt/app/oracle_software
chown oracle:dba /opt/app/oracle_inventory
chown oracle:dba /opt/app/oracle_inventory/inventory

5. Change the ownership of the Oracle RDBMS media files downloaded in Part 9 of this serious to the oracle software owner with the following commands:
chown oracle:dba /opt/app/oracle_software
chown oracle:dba /opt/app/oracle_software/*
chmod 777 /opt/app/oracle_software/*

6. Switch to the oracle software owners account and change directory back to /opt/app/oracle_software location.
[root@oel65 oracle_software]# su – oracle
[oracle@oel65 ~]$ cd /opt/app/oracle_software
[oracle@oel65 oracle_software]$

7. Unpack all the mediate files with the following command: “find . -name “*.zip” -exec unzip {} \;”
[oracle@oel65 oracle_software]$ find . -name “*.zip” -exec unzip {} \;
…
..
inflating: database/response/netca.rsp
inflating: database/response/dbca.rsp
inflating: database/response/db_install.rsp
[oracle@oel65 oracle_software]$

8. This completes the setup of the VM Enterprise Linux for Oracle 12c RDBMS installation.

Larry Catt, OCP

12c, linux, Oracle

Part 9 – Building Oracle 12c development suite – Media packages required for installation of Oracle RDBMS 12c

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Part 9 – Building Oracle 12c development suite.
Media packages required for installation of Oracle RDBMS 12c

Oracle Corporation provides the ability for developers to create a complete development suite on their personal windows desktop or laptop without requiring the expensive equipment required for a true production system. This article outlines the process of downloading the media required for installation of Oracle 12c RDBMS in a RHEL 6.5 environment.
NOTE: This process can be used for most Linux installations, regardless of original company or organization providing the base Linux OS.

1. Logon to your Windows desktop/laptop as an administrator and open Oracle VirtualBox.
2. Open an internet browser and download the following files from www.oracle.com and place them in the directory /opt/app/oracle_software.

p17694377_121020_Linux-x86-64_1of8.zip
p17694377_121020_Linux-x86-64_2of8.zip
p17694377_121020_Linux-x86-64_3of8.zip
p17694377_121020_Linux-x86-64_4of8.zip
p17694377_121020_Linux-x86-64_5of8.zip
p17694377_121020_Linux-x86-64_6of8.zip
p17694377_121020_Linux-x86-64_7of8.zip
p17694377_121020_Linux-x86-64_8of8.zip

3. Change directory to /opt/app/oracle_software with the command “cd /opt/app/oracle_software”

[root@OEL65 ~]# cd /opt/app/oracle_software/
[root@OEL65 oracle_software]#

4. Extract the zip files with the following command: “find . -name “*.zip” -exec unzip {} \;”

[root@OEL65 oracle_software]# find . -name “*.zip” -exec unzip {} \;
[root@OEL65 oracle_software]#

5. NOTE: This is a base version of the software and requires additional patches to bring it to current date.
6. This completes the setup of the VM network.

Larry Catt, OCP

12c, linux, Oracle

Part 8 – Building Oracle 12c development suite – Library setup for Oracle Enterprise Linux 6.5 for Oracle RDBMS 12c

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Library setup for Oracle Enterprise Linux 6.5 for Oracle RDBMS 12c

Oracle Corporation provides the ability for developers to create a complete development suite on their personal windows desktop or laptop without requiring the expensive equipment required for a true production system. This article outlines the process for configuration libraries for an Oracle Enterprise Linux 6.5 installation in preparation for installation of Oracle 12c RDBMS.
NOTE: This process can be used for most Linux installations, regardless of original company or organization providing the base Linux OS.

1. Logon to your Windows desktop/laptop as an administrator and open Oracle VirtualBox.
2. Logon to your Linux VM as the root user.
3. Change directory to your yum repository with command: “cd /etc/yum.repos.d”

[root@oel65 ~]# cd /etc/yum.repos.d
[root@oel65 yum.repos.d]#

4. Extract the repository from the oracle public yum website with the command: “wget http://public-yum.oracle.com/public-yum-ol6.repo”

[root@OEL65 yum.repos.d]# wget http://public-yum.oracle.com/public-yum-ol6.repo
–2015-04-12 18:49:53– http://public-yum.oracle.com/public-yum-ol6.repo
Resolving public-yum.oracle.com… 70.186.29.33, 70.186.29.58
Connecting to public-yum.oracle.com|70.186.29.33|:80… connected.
HTTP request sent, awaiting response… 200 OK
Length: 5046 (4.9K) [text/plain]
Saving to: “public-yum-ol6.repo.1”

100%[======================================>] 5,046 –.-K/s in 0s

2015-04-12 18:49:53 (225 MB/s) – “public-yum-ol6.repo.1” saved [5046/5046]

[root@OEL65 yum.repos.d]#

5. Edit the yum repo file with appropriate values with the following perl command: “perl -pi.bak -e ‘s/enabled=0/enabled=1/g’ /etc/yum.repos.d/public-yum-ol6.repo”

[root@OEL65 yum.repos.d]# perl -pi.bak -e ‘s/enabled=0/enabled=1/g’ /etc/yum.repos.d/public-yum-ol6.repo
[root@OEL65 yum.repos.d]#

6. Download necessary RPM file from oracle with command: “wget –no-check-certificate https://public-yum.oracle.com/RPM-GPG-KEY-oracle-ol6 -O /etc/pki/rpm-gpg/RPM-GPG-KEY-oracle”

[root@OEL65 yum.repos.d]# wget –no-check-certificate https://public-yum.oracle.com/RPM-GPG-KEY-oracle-ol6 -O /etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
–2015-04-12 18:50:29– https://public-yum.oracle.com/RPM-GPG-KEY-oracle-ol6
Resolving public-yum.oracle.com… 70.186.29.58, 70.186.29.33
Connecting to public-yum.oracle.com|70.186.29.58|:443… connected.
WARNING: no certificate subject alternative name matches
requested host name “public-yum.oracle.com”.
HTTP request sent, awaiting response… 200 OK
Length: 1011 [text/plain]
Saving to: “/etc/pki/rpm-gpg/RPM-GPG-KEY-oracle”

100%[======================================>] 1,011 –.-K/s in 0s

2015-04-12 18:50:30 (16.8 MB/s) – “/etc/pki/rpm-gpg/RPM-GPG-KEY-oracle” saved [1011/1011]

[root@OEL65 yum.repos.d]#

7. Use the following yum command to install the packages from oracle for 12c RDBMS install: “yum install oracle-rdbms-server-12cR1-preinstall”

[root@OEL65 yum.repos.d]# yum install oracle-rdbms-server-12cR1-preinstall
Loaded plugins: rhnplugin, security
This system is receiving updates from ULN.
Setting up Install Process
…
…
…
public_ol6_MySQL | 1.2 kB 00:00
libdmx.x86_64 0:1.1.3-3.el6 libstdc++-devel.x86_64 0:4.4.7-11.el6
xorg-x11-utils.x86_64 0:7.5-6.el6 xorg-x11-xauth.x86_64 1:1.0.2-7.1.el6

Complete!

8. This completes the setup of the VM libraries for Oracle 12c RDBMS.

Larry Catt, OCP

12c, linux, VM

Part 6 – Building Oracle 12c development suite – Security setup for Oracle Enterprise Linux 6.5 on Oracle VirtualBox

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Security setup for Oracle Enterprise Linux 6.5 on Oracle VirtualBox

Oracle Corporation provides the ability for developers to create a complete development suite on their personal windows desktop or laptop without requiring the expensive equipment for a true production system. This article outlines the process for configuration security for an Oracle Enterprise Linux 6.5 installation in preparation for installation of Oracle 12c RDBMS.
NOTE: This process can be used for most Linux installations, regardless of original company or organization providing the base Linux OS.

The two key security requirements to temporarily remove during installation of most software suites is the firewall and linux se feature.

To disable the Linux firewall perform the following:
1. Logon to the linux VM as the root user and execute the command: “chkconfig iptables off”

login as: root
root@10.30.15.127’s password:

[root@oel65 ~]# chkconfig iptables off
[root@oel65 ~]#
To remove the Linux SE feature, perform the following:

2. Logon to your linux VM as the root user and execute the command: “perl -pi.bak -e ‘s/SELINUX=enforcing/SELINUX=disabled/g’ /etc/selinux/config”.

login as: root
root@10.30.15.127’s password:
[root@oel65 ~]# perl -pi.bak -e ‘s/SELINUX=enforcing/SELINUX=disabled/g’ /etc/selinux/config
[root@oel65 ~]#

3. Issue the command “reboot” for the the changes to take affect
[root@oel65 ~]# reboot
Broadcast message from root@oel65
(/dev/pts/0) at 22:02 …
The system is going down for reboot NOW!
[root@oel65 ~]#

4. This completes the setup of the linux security for Oracle installation.

Larry Catt, OCP

linux

Disable Linux Firewall

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When preparing your RHEL server for an Oracle RDBMS or other application software installations, it is normally a good idea to temporarily disable the OS layer firewall to prevent possible communication errors. This can be performed with the command CHKCONFIG. Use the following procedures to check and disable or enable the RHEL firewall.

1. Logon as the root user.
Using username “root”.
Last login: Mon Jun 2 08:57:14 2014 from 192.168.10.1
[root@linuxpc ~]#
2. Check the current status of RHEL firewall with command ‘SERVICE’ command.
[root@linuxpc ~]# service iptables status
Table: filter
Chain INPUT (policy ACCEPT)
num target prot opt source destination
1 ACCEPT all — 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED
2 ACCEPT icmp — 0.0.0.0/0 0.0.0.0/0
3 ACCEPT all — 0.0.0.0/0 0.0.0.0/0
4 ACCEPT tcp — 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:22
5 REJECT all — 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited

Chain FORWARD (policy ACCEPT)
num target prot opt source destination
1 REJECT all — 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited

Chain OUTPUT (policy ACCEPT)
num target prot opt source destination

[root@linuxpc ~]#

3. As shown above the firewall is currently active, You can disable now with the ‘SERVICE’ command.
[root@linuxpc ~]# service iptables stop
iptables: Flushing firewall rules: [ OK ]
iptables: Setting chains to policy ACCEPT: filter [ OK ]
iptables: Unloading modules: [ OK ]
[root@linuxpc ~]#

4. Or you can use the ‘CHKCONFIG’ command to disable the RHEL firewall, which shuts the firewall down on reboot. This is done by adding references to the appropriate /etc/rc.d directory to either kill the service or start the service at given run level.
[root@linuxpc ~]# chkconfig iptables off
[root@linuxpc ~]#

Larry Catt, OCP

12c, linux, VM

Part 3 – Building Oracle 12c development suite – Configuration for Oracle Enterprise Linux install on VirtualBox.

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Configuration for Oracle Enterprise Linux install on VirtualBox.
Oracle Corporation provides the ability for developers to create a complete development suite on their personal windows desktop or laptop without requiring the expensive equipment required for a true production system. This article outlines the process of setting up a VirtualBox for a guest Linux OS.

NOTE: This instructions can be used for installing any type of guest OS, just acquire the appropriate ISO or CD for the guest OS you wish to install.
Required files:
ISO V41362-01 – Oracle Enterprise Linux 6.5
1. Logon to your Windows desktop/laptop as an administrator and open Oracle Virtual Box.
2. Select the New button on the tool bar or select Machine ? New from drop down menu.

s
3. Enter the Name, Type and Version of your guest OS and select Next.

4. Select the amount of memory you would like to provide to your Guest OS, I would recommend a minimum of 2048M or ¼ of your system memory. Then select the Next button.

5. Under Create Virtual Machine page, add hard drive via the Create a virtual hard drive now selection and select the Create button.

6. At the page Hard drive file type, select VDI (VirtualBox Disk Image) and press the Next button.

7. At the Storage on Physical hard drive button, select Dynamically allocated button and press the Next button.

8. At the File location and size page, I would recommend a minimum of 50GB and press the Create button.

9. The base configuration of your Guest OS is now create, but we still have to load your guest OS ISO or CD for installation of the guest OS. To do this ensure that your new guest OS is highlighted in the left panel of your VirtualBox Control Panel and select the Settings button from the tool bar.

10. At the Settings page, select the storage option from the left panel and select the plus symbol over the desks next to Controller: IDE.

11. At the VirtualBox – Question select the Choose disk button.

12. Navigate to the directory where you are storing your guest OS ISO or DVD and select the file or device, then press Open.

13. The ISO or DVD will now show up in the Controller: IDE panel of Storage Tree, select the OK button to save your changes.

14. This completes the process of setting up your VirtualBox Console for a new Guest OS installation.

Larry Catt