uln_register "This system profile has already been registered"

Whenever cloned or previously registered machine would like to be registered again via uln_register to linux support , "This system profile has already been registered" may occur. These two possibilites of error can be avoided regenerate system uuid .

From ULN web interface related system information can be deleted from System tab. If you could not find any related system on list , following steps can be done.

With "uuidgen -r" command random id is generated ,with "uuidgen -t" generated id is based on system MAC address.For several versions of linux support , following actions can be done.

For Oracle Linux 4 and 5

Output of uuidgen -t is replaced the existing value of rhnuuid parameter of /etc/sysconfig/rhn/up2date-uuid file. up2date is run again.

For Oracle Linux 6 

Following command writes generated uuid into the related file which is "/etc/sysconfig/rhn/up2date"

echo "uuid=`uuidgen -t`" >> /etc/sysconfig/rhn/up2date

uln_register is run again.

registering Oracle linux to Unbreakable Linux Network and installing ASM

In order to install asm related packages for OEL 5.7  I have registered my system to  Unbreakable Linux Network (ULN). For OEL 5  up2date --register command is used. If you are using OEL 6 uln_register is used.

# up2date --register (OEL 5)

# uln_register (OEL 6)

Do not forget , you must have your server has access to internet to register itself on ULN and of course valid ULN account.

After typing up2date --register  you will be asked to enter your ULN uid , pwd and CSI 

The up2date will collect your system information  and this information will be used for system profile.

Then up2date will collect installed packages and associate then with related system.

On last screen collected information is sent to ULN to register.

Asmlib RPM is part of “Oracle Software for Oracle Linux” channel.System must be subscribed to related channel.After login  into ULN web site (linux.oracle.com) go to systems tab and select the system you will subscribe.  By using manage subscriptions you can select “Oracle Software for Oracle linux 5 (x86_64)” channel to save .Now you can download all asmlib software directly from ULN.

To install asm related softwares following command is executed for Oracle Linux 5 and older.

# up2date -i oracleasm-support oracleasmlib oracleasm-`uname -r`

if you have Oracle Linux 6

# yum install oracleasm-support oracleasmlib oracleasm-`uname -r`