The following post may help you:
As you are already on a web based Forms release some steps you may follow:
1. Install new 12c database
2. migrate schemas from 10g to 12c
3. Install new 12c infrastructure and Forms/reports software and RCU
4. Configure webutil
5. Configure Forms/Reports config files
6. Recompile or use 12c migration assistent
Thanks for your reply. We have migrated our forms and reports from 10g ias to weblogic 188.8.131.52 by using the steps you mention earlier. The migration was successful except we are facing an issue related to icon.The icons are not showing properly even after proper configuration
we have icons in gif files and we have created jar file out of it and placed it inside forms_home/forms/java/ directory
in formsweb.cfg file.
We set the following in Registry.dat file
in default.env file
and restarted forms services. But its not showing the icons properly.
Kindly suggest if anything else is required to configure the icons properly.