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Oracle Forms – The application’s digital signature has an error – Your forms application is Frozen


Forms Application is Frozen

Alternate Title: Forms hangs with java digital signature certificate error

Well, we have reached the weekend and time for my bug of the week. I’m sure most forms consultants out there have already run into this one by now.  There have been many solutions floating around (copying dll, installing patches, upgrading the JDK) But I thought I’d write a post with a pretty simple solution and with all possible keywords that people will use to search the error since my customers had trouble finding the solution on google.


Question: How would you search for this type of error?

The customer gets a Warning popup window in the browser when they run Oracle Forms using JDK which says the following: Warning – Security (Window Title) –  The Applications’ digital signature cannot be verified (or has an error) . Do you want to run the Application?Name: oracle.forms.engine. Main Publisher: Product Management From: http://<hostname:port>Check Box (Always trust content from this publisher) And there is a Run and Cancel button.

The problem:  The only problem is you can not click on the checkbox and the run and cancel buttons do not work. Your only solution is to close the browser and restart the forms only to get the same error. You can move the window and even see the Java Console window but you cannot click anything. Basically, you are frozen and cannot get into the Application.

A solution attempt: You try to search using the usual suspects:

  • Forms gets stuck on digital signature when using sun JVM
  • Forms hangs with certificate error using sun JVM
  • Form is frozen with security warning when run using sun JVM
  • Form freezes with java signature warning using JDK 1.6

But after much wasted time, you send an email to your friendly neighborhood consultant who tells you a fix in a second which you are both thankful for but also drives you nuts that you wasted so much time looking for a solution. Sound familiar?

The solution that works:

In general, the error should not occur if all the Oracle Forms jars installed on the server have been properly signed with the same certificate. This warning is usually the result of the customized jar file that was not properly signed with the sign script Oracle provides with Forms. It is usually the jacob.jar file which is part of the webutil installation that needs to be signed with the same certificate as the frmwebutil.jar. This usually occurs more often in Forms 11g since Oracle provides the frmwebutil.jar pre-signed. BUT if you’ve run into this problem the poor man’s solution for a quick fix (which can also be found in the OTN forum if you look hard enough) is:

Go into the control panel and right-click on the java icon.
Go to the ‘Advanced’  tab then open the ‘JAVA plugin’ branch on the tree

UNCHECK   ‘Enable the next-generation Java Plug-in(requires browser restart)’

Click Apply

Then click OK.

Then make sure ALL browser windows have been closed. You should also check in the control panel that no extra iexplore.exe processes are open and kill the program or “ORACLE FUSION FORMS … ”  if it exists. Then when you run the forms again your browser will reload this page and popup the warning message again, this time you should be able to select the checkbox and accept the security warning. Once accepted the warning should not return.


Conclusion and Resources:

Anyone else run into this one? Any other creative solutions?

  1. If you want to run Forms without an applet at all from HTML or mobile apps this page is a good place to start.
  2. Want assistance from the industry experts in Oracle Forms? AuraPlayer has free “ask our experts” sessions available, click here to schedule.
  3. In addition, if you want to learn how to stay in control of your Oracle Forms environment and applications, read our Essential Guide to troubleshooting errors on Oracle Forms – Download Now

David Buch
Senior Products Manager

David, our Senior Products Manager, is a highly experienced professional specializing in product definition, innovations, and development, with broad customer understanding, and skillful people management. He has over 20 years of R&D work experience, and continues to excel in his expertise. When he is not working, David enjoys spending his time as a professional tuba player joining symphony orchestras and chamber ensembles.

Elizabeth Pearl
Relationship Manager

Before joining AuraPlayer, Elizabeth completed a Masters degree in Education and worked as a teacher. Elizabeth’s role as Customer Relationship Manager combines both her passion for technology and her deep desire to educate  others. On a daily basis, Elizabeth takes the valuable insights she gained as a teacher and uses them to rise within the world of tech. She uses her skills of active listening, organization, preparation, and clear communication to enhance the wonderful relationships she has with both coworkers and customers.


Elizabeth is originally from the United States but currently resides in England. In her spare time, she loves exercising, spending time with her family and friends, and playing volleyball.

Nathalie Wasserman
CFO & Operations Manager

Natalie is proud to be AuraPlayer’s Operations and Chief Financial Officer. She takes pride in her work, and loves being a part of the AuraPlayer family. Prior to working at AuraPlayer, Nathalie worked at various companies as an accountant. She attended the University College London (UCL), where she graduated with a Bachelor’s Degree in economics and business. She then went on to pursue a Master’s degree in Political Economies in Eastern Europe. 

Gwen Edwards
VP Business Development

An expert in helping businesses seize their potential and grow, Gwen is committed to take AuraPlayer to the next level. With over 30 years of experience in the high technology sector and working with Fortune 500 companies, she works as an advisor for growing businesses to help enhance their value and reach their business objectives. She’s a dynamic member of our team, leveraging her sales and marketing, and P&L experience to our current and future product suite.

Gwen also serves on a several private company boards in Silicon Valley, and is an active member of the angel investment network, Golden Seeds.

Yossi Nakash
CTO & Co-Founder

A true developer, Yossi has been developing and coding in Java / J2EE, C++, .Net, and C# for over 20 years, focusing mainly on the RD side of things. Entering the Oracle World about 10 years ago, Yossi immersed himself in the world of Oracle SOA, Weblogic, EBS and EBS Mobile, as well as the Java side of things.

Prior to joining Mia to found AuraPlayer, Yossi held the role of RD team leader at RadView and was a Java developer at Motorola.