Forms Fail With "ClassNotFoundException: oracle.apps.fnd.formsClient.FormsLauncher.class" After Upgrade to R12 (Doc ID 1637829.1)

Last updated on SEPTEMBER 02, 2016

Applies to:

Oracle Applications Technology Stack - Version 12.0 and later
Information in this document applies to any platform.

Symptoms

Forms not launching after upgrade from 11i to R12.
The error is: ClassNotFoundException: oracle.apps.fnd.formsClient.FormsLauncher.class.

JRE 1.7.0_51-b32 is used with Internet Explorer 10 under Windows 7 client OS.

Changes

 Upgrade to R12, in particular JRE (Java Plug-in) upgrade.

Cause

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