Let's start with the basics. Exactly which version have you installed and on what platform have you installed it? Is the OS 32 or 64bit? If the OS is 64bit and you are trying to use Forms 11.1.2.x, you need to use the 64bit version of the Oracle software (FMw and WLS and JDK). Also, the error you mentioned is a runtime error and not a compiler error. Are you trying to compile or run a form?
Installed Form Services version is 22.214.171.124.0 and platform used is OS 32bit.
Form can be compiled successfully, but when I try to Run Form via Oracle Forms Builder, will hit this error.
I also try to access Application Server URL by IE which define in Oracle Forms Builder's Runtime Perferences, hit this error too.
Try the following url. If the test form works correctly then the problem is likely in you form.
If the form displays properly, clicking on its OK button will cause it to exit.
I forgot to mention, it is important that the OS user who owns the installation must be the user that starts and stops it. In other words, if "oracle" performed the installation, then "Justine" should not be the one trying to start it. The instance must be started by "oracle".
Edited by: Michael Ferrante (Oracle) on Mar 25, 2013 11:25 AM