Archive for the “Linux” Category

The main effect Facebook and LinkedIn had on my online behavior is that I’m not posting on my blog anymore. It’s also true that I don’t have the time anymore for long articles, but I am really loving my blog (now 6 years old… school boy) and will continue to publish here things that are too technical for Facebook and not business enough for LinkedIn.

Meanwhile, since the last post, I studied a lot on Oracle Data Integrator (ran 5+ workshops across EMEA), Oracle GoldenGate (very hot on my plate, built a machine we’re using for exercises and the corresponding lab book very appreciated on our workshops), Oracle Database Firewall, got GoldenGate Certified Implementation Specialist certification, was traveling a lot to various places in Europe, including a series of 7 weeks in a row, now chilling out a bit and making time for CISSP certification.

Certification status as of May 2011

What’s common to the 3 technologies above? Anybody? Yes, I’m trying to get heterogeneous, they are all dealing with other database systems as well.

Keep in touch.

P.S. Yes, I do hate as well Ubuntu 11.04, can’t wait for 11.10

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Apex is a great tool for rapid web applications based on Oracle Database. It’s free, and if you’re happy with Oracle XE’s limitations, then it’s perfect, you have the database free as well. I’ve been following APEX for long time ago, since it was called HTML DB, and wrote 2+ years ago a guide how to install APEX on XE.

Now APEX 4.0.1 is GA and most of the people would like to upgrade. It’s very simple.

1. Download APEX from OTN
Read the rest of this entry »

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After I saw quite some interest on installing Webmin on Ubuntu 9.04 and 9.10, I decided to go ahead and do the same for 10.04 and 10.10. I also strongly believe Ubuntu is doing wrong by not including Webmin into their repository Webmin is doing a mistake by using a deprecated library and not leave everybody to take benefit of their great product.
For those unfamiliar with Webmin, it is a web interface for configuring your linux box without X server.


LATER EDIT: As Joe Cooper from Virtualmin (the guys making webmin) said in the comments, there’s no need anymore for libmd5-perl for webmin starting with 1.520. I tested and it’s true, now the whole installation can be done in 3 simple steps. Thanks Joe, now’s much better!

Having said these, let’s to the job: Read the rest of this entry »

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Comments 25 Comments »

After I saw quite some interest on installing Webmin on Ubuntu 9.04 and 9.10, I decided to go ahead and do the same for 10.04 and 10.10. I also strongly believe Ubuntu is doing wrong by not including Webmin into their repository Webmin is doing a mistake by using a deprecated library and not leave everybody to take benefit of their great product.
For those unfamiliar with Webmin, it is a web interface for configuring your linux box without X server.



LATER EDIT: As Joe Cooper from Virtualmin (the guys making webmin) said in the comments, there’s no need anymore for libmd5-perl for webmin starting with 1.520. I tested and it’s true, now the whole installation can be done in 3 simple steps. Thanks Joe, now’s much better!

Having said these, let’s to the job: Read the rest of this entry »

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Comments 8 Comments »

I’ve been tasked to add some features (subversion is one of them) under a Virtual Private Server (cPanel WHM) on a Hosting site.

image.axd

First I downloaded and unarchived subversion:

mkdir -p /usr/local/src/subverison
cd /usr/local/src/subversion
wget http://subversion.tigris.org/downloads/subversion-1.6.9.tar.bz2
tar xfj subversion-1.6.6.tar.bz2
 

Since the last versions are requiring SQLite, I had to download and copy one file from sqlite folder to subversion folder: Read the rest of this entry »

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I am a big fan of Ubuntu Server. It’s exactly what you need for a server, no fancy UI, just services.
Dealing with all the text configuration files can be a time consuming task and there is something that can help a lot. It’s called Webmin and it is a web interface for configuring your linux box.
Webmin demo

You need to install first some perl-related libraries required by webmin:

sudo apt-get install perl libnet-ssleay-perl openssl libauthen-pam-perl libpam-runtime libio-pty-perl libmd5-perl

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Hey, Ubuntu 9.10 (Karmic Koala) is out of beta and is now available for download here.

To see what’s new just check the release notes. From my feeling after testing the beta, It’s pretty similar to 9.04 (Jaunty Jackalope) but with some package updates and improvements.

Don’t wait, go and take it.

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xe_logoBest way to have a easy to access XE database and APEX on top of it is to put them on a Ubuntu Server virtual machine that I start just when I need.

Installation of 10g Express Edition should not take more than 10 minutes and the steps are below:

1. Prepare the swap space
If you have less than 1GB memory run the following commands to create swap space:

$ sudo dd if=/dev/zero of=/swpfs1 bs=1M count=1000
$ sudo mkswap /swpfs1
$ sudo swapon /swpfs1

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Comments 20 Comments »

I am a big fan of Ubuntu Server. It’s exactly what you need for a server, no fancy UI, just services.
Dealing with all the text configuration files can be a time consuming task and there is something that can help a lot. It’s called Webmin and it is a web interface for configuring your linux box.
figure1

You need to install first some perl-related libraries required by webmin:

sudo apt-get install perl libnet-ssleay-perl openssl libauthen-pam-perl libpam-runtime libio-pty-perl libmd5-perl

Read the rest of this entry »

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Comments 37 Comments »

ubuntu-serverUpgrading the Server version of Ubuntu 8.10 to the latest one, 9.04 is not a big deal as I read here.

I did it in 10 minutes as following:
1. Install update-manager-core if it is not already installed:

sudo apt-get install update-manager-core

2. Launch the upgrade tool:

sudo do-release-upgrade

3. Follow the on-screen instructions.

Good luck,
Andrei

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