How to find the Oracle Application Server version number

I remember that I was searching a few years ago for a way to find the exact version of the Oracle Application Server, but I didn't found it.

Today I had to search for this again and now I found a file that contains the exact version and even will be updated when the iAS is patched.

The file to look for is ias.properties, in this file you have to look for the line that begins with Version, next to this you will find the correct number.

You can find this file in iAS-home\config