Many have claimed concerns about upgrading from Forms/Reports 12.2.1.3 or .4 to 12.2.1.19 because it is “difficult”. This is far from true. Upgrading to 12.2.1.19 is easy and fast. Take a look at this Oracle Support created video and see how easy it can be.
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EDITED: I have removed the URL to the video in this post as it was determined to not be accessible by the general public. We are working on making that video public and will post it as soon as possible if technically possible. Also note that Oracle Support is planning several webcast to be presented beginning in September. Details about those should be visible on the Oracle Advisor Webcast page in August.
https://go.oracle.com/oraclesupportadvisorwebcasts
Sorry for any inconvienence this may have caused.
Also be sure to refer to the product documentation for full guidance on installing and/or upgrading. The 12.2.1.19 documentation can be found here:
https://docs.oracle.com/en/middleware/developer-tools/forms/12.2.1.19/index.html