Thursday, February 24, 2011

Ran into a problem when installing Oracle Identity Management into a WLS 11g. Registering the OID with opmnctl gave me an

Solved it by extending the domain (although the configuration of the OID was specifically set to No Domain). Make sure that the Enterprise Manager is in the domain.
After that (and this is the important part) make sure to restart the domain, at least the AdminServer.

Tuesday, February 22, 2011

Several Node Managers in Oracle WebLogic on one machine

This is an age old dilemma for people like me. You work in a project, that has several environments (DEV, TEST, QA, PRD). Typically as a project member you are not allowed access to QA and PRD - which is very good. The main problem is that the QA and PRD environments offer high availability.

In order to provide a good installation manual you need to come up with clustering even when you do not have enough machines.

So for my current project I have chosen a different approach.
I have four blades, three with 1 CPU (dual core) and one with 2 CPU's (dual core as well).

I use one for the database, one for the middle tier (the bigger one), one for the web tier, and the fourth one for the load balancer and firewall.

The load balancer and firewall will be done with iptables and HAProxy.

Now on the middle tier I needed to have 14 different nodes.
I created virtual NIC's and put them into the hosts file as well.

In order to have "independent" WebLogic Servers I installed them in different WLS_HOME directories. Now I want a Node manager, an Admin Server and at least one Managed Server per NIC. This proved a little bit more difficult than expected.

Changing the Node Manager to run on a different port is one activity that takes three steps already. As all my Managed Servers will run on SSL as well I ran into a problem with the BEA-090482. Solving this meant to recreate the Java Keystore for the virtual NIC hostname. After this I was capable of starting everything independently.

I will try to put everything as a document tonight and place it on my website.

Monday, February 21, 2011

WLS installer - Uncheck security updates

I intended to install some WLS homes on Friday. Somehow, when I unchecked the "I want to receive security updates via My Oracle Support" I ended up with a grayed out dialog box.

This wandered around my head the whole weekend. I retried this morning and found a solution.
Please check out the document on (easier for me to put documents there, instead of blogspot.

Monday, February 07, 2011

Ubuntu Gnome quirk - d minimizes Window

Reinstalled one of my laptops with Ubuntu Server 10.10 and put Gnome on it as well.
While I was accessing the Gnome Desktop with VNC I experienced some strange behavior. Entering the letter 'd' minimized the Window. A little bit of research showed that this can be solved by changing the following setting:
System -> Preferences -> Keyboard Shortcuts
Scroll down to "Hide all normal Windows and set focus to the desktop"
In there the letter 'D' should be present. Set this to disable and enjoy Gnome as it was meant to be.

Sunday, February 06, 2011

Tron - Legacy

Tron was one of the two movies that gave me the push to study computer science. Now - some 30 years later Tron - Legacy hit the movies, off course with better graphics, 3D effects, and a somewhat better story.

During the movie I looked back at the time since the first part.


I'm still the young lad (OK - with a fatter belly and the first gray hairs) and I am still enjoying every minute of it.

This shows that if you do something with passion and conviction - every day is a good one.