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Blank Page Accessing R12 - Application.log shows "html: chain failed", "Unable to create user session" (Doc ID 734692.1)

Last updated on JUNE 01, 2024

Applies to:

Oracle E-Business Suite Technology Stack - Version 12.0.2 to 12.1.2 [Release 12.0 to 12.1]
Information in this document applies to any platform.


When attempting to login via the typical http://server.domain:8000/, the next expected page is the local login page of http://server.domain:8000/OA_HTML/AppsLocalLogin.jsp.  Instead, a blank page is returned and users cannot login.

Using the standard debugging methods of <Note:422419.1>, the following is seen in the $INST_TOP/logs/ora/10.1.3/j2ee/oacore/oacore_default_group_1/application.log:

10/03/05 09:14:58.625 html: Started
10/03/05 09:22:38.520 html:

10/03/05 09:22:38.520 html: LeakSetting:

10/03/05 09:22:39.951 html: chain failedjavax.servlet.ServletException: java.lang.RuntimeException: Unable to create user session. Please contact your System Administrator.
at com.evermind[Oracle Containers for J2EE 10g ( ].server.http.EvermindPageContext.handlePageThrowable(

at com.evermind[Oracle Containers for J2EE 10g ( ].server.http.EvermindPageContext.handlePageException(

at _AppsLocalLogin._jspService(

at com.orionserver[Oracle Containers for J2EE 10g ( ].http.OrionHttpJspPage.service(

at ...



The current pattern from customer service requests is that the issue primarily effects cloned instances.  The original instance will work fine, but the clone will have the problem described here.


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