Tag: howto

Safely increase size of a column in a PostgreSQL table without changing data

Sometimes we find that the size of a column is not sufficient to hold the data we need to store. We need to safely increase size of a column in a PostgreSQL table without changing data. Say, we have default

Posted in Postgres Tagged with: , , , , , , , , , ,

psql: FATAL: password authentication failed for user – error in Postgresql

Hi all, I am writing after a long time. This will be a short post on the error we get in postgresql. The error is : psql: FATAL:¬† password authentication failed for user “username”. The following code snippet shows the

Posted in Postgres, Ubuntu 12.04 LTS Tagged with: , , , , , , ,

How to enable hibernate in ubuntu 12.04

Hi all, The hibernate menu is disabled by default in ubuntu 12.04 due to some reasons like it din’t work in many computers. So you can re-enable it in ubuntu 12.04. Here is how you can enable hibernate in ubuntu

Posted in Ubuntu Tagged with: , , , , , , , , , , , , , , ,

How to extract tar.xz file

Hello all, I was trying to extract tar.xz file in Ubuntu recently and was getting errors. The “Right click” –> “Extract” too din’t work. I assumed that as it was tar file it should have the capability to extract this

Posted in Linux, Ubuntu, xz Tagged with: , , , , , , , , , , , , , , , , , , ,

How to enable ssh to VirtualBox guest Ubuntu

I recently installed Ubuntu Server 12.04 on Oracle VirtualBox and needed to connect to it using ssh. But was wondering how to access my ubuntu server guest from my ubuntu host (yes, I am using ubuntu as host too.) and

Posted in Ubuntu, Virtualbox Tagged with: , , , , , , , , , , , ,

How to install virtualbox in ubuntu

Hi all, I have installed virtualbox many times in my ubuntu machine. But recently, after installing virtualbox in my ubuntu machine from Software center, I found some problem installing guest additions in it. After much searching I found that I

Posted in Ubuntu, Virtualbox Tagged with: , , , , , , , , , , , , , , , ,

The resource is not on the build path of a java project eclipse

Hi all, I am back again. So, this post is about an error “The resource is not on the build path of a java project eclipse” in Eclipse IDE when you try to navigate using F3 key or Ctrl+(left mouse

Posted in Eclipse IDE Tagged with: , , , , , , , ,

Ubuntu 12.04 on Virtualbox pae error – “Unable to boot – please use a kernel appropriate for your CPU”

Hi all, My last post was about the release of Ubuntu 12.04 LTS. I wanted to install it in the VirtualBox. But I got an error. So this post is about how to remove the error and move forward with

Posted in Linux, Precise Pangolin, Ubuntu, Ubuntu 12.04 LTS, Virtualbox Tagged with: , , , , , , , , , , , , , , , , , , , , , ,

How to Create Translucent and Shaped Windows in java.

Hi all, I am back after a long time. This time I want to tell you all how I set a window as translucent in java. It was a very cumbersome thing to do before recently. From JDK 6 update 10,

Posted in Java, java 7, jdk7, Swing Tagged with: , , , , , , , , , , , , , , , , , , , , ,

How to add spring capabilities to Eclipse IDE using SpringSource Tool Suite from the Release Update Site

Hi everyone, Today I will tell you all how I added spring capabilities to the Eclipse IDE using release update site. EDIT: Removed Galileo(3.5) and added Indigo(3.7) update sites. Installing from the Release Update Site The SpringSource Tool Suite components

Posted in Eclipse IDE, Java, Linux Tagged with: , , , , , , , , , , , , , , ,
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