Last week I installed OS X Lion, which was great fun. I’m not going to say it is revolutionary, but it certainly has some nice improvements. One particular issue often mentioned on the internet, is that some software stops working on OS X Lion or Mountain Lion.
I needed Oracle SQL Developer, so downloaded the installer from Oracle Technet. To my surprise, it wouldn’t start. It would be very inconvenient if SQL Developer would be broken under OS X for me! After some research I found that OS X Lion does not have a Java Runtime, and SQL Developer does need one.
You might want to check your log files too. I found that SQL Developer generated a whopping 30 gigabytes of logfiles when it couldn’t find the java runtime.
Installing is simple. Go to your terminal, enter java -version and press enter. Voila, OS X asks if you want to install the JRE. Of course you want to! Press Yes and you’re all set to go. Enjoy.