jacob/com/ComFailException.class HTTP/1.1 and HTTP 404 (File not Found) with Jacob.jar
(Doc ID 1283729.1)
Last updated on MAY 08, 2020
Applies to:Oracle Forms - Version 126.96.36.199.0 and later
Information in this document applies to any platform.
Occurs with forms 11g
Checked for relevance on 27-Aug-2015
This problem has been reported infrequently and has been difficult to consistently reproduce internally at Oracle.
1. The problem normally happens with the jacob.jar file but has been reported with other custom jar files. Symptoms are:
a. Java Console shows ->
Exception in thread "thread applet-oracle.forms.engine.Main-2" java.lang.NoClassDefFoundError: com/jacob/com/ComFailException
at java.lang.Class.forName0(Native Method)
Forms Applet version is 188.8.131.52
Exception in thread "thread applet-oracle.forms.engine.Main-1" java.lang.NoClassDefFoundError: com/jacob/com/ComFailException
b. The OHS access.log shows ->
NNN.NNN.NNN.NN - - [10/Jan/2011:09:31:52 -0500] "GET /forms/java/com/jacob/com/ComFailException.class HTTP/1.1" 404 1214
2. Trying to access the jar file directly using the OHS or WLS_FORMS port results in "Page not Found".
Note: jacob.jar has been signed and is located in the ORACLE_HOME/forms/java directory.
3. Other jar files such as frmall.jar, frmwebutil.jar, etc., do NOT exhibit this problem.
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