Users experience blank pages that never load in Tempo. If the page is refreshed or the tab/window is closed and reopened, the page is no longer blank.
When the issue occurs, errors similar to the following 500 errors are printed in the WebLogic server access logs:
172.24.164.20 - - [01/Feb/2018:13:17:25 +0000] "POST /enterprise_bpm/rest/a/task/latest/145337/form HTTP/1.1" 500 104 172.26.121.159 - - [01/Feb/2018:14:20:13 +0000] "POST /enterprise_bpm/rest/a/uicontainer/latest/wJV9zQ/view HTTP/1.1" 500 104 172.26.121.159 - - [01/Feb/2018:14:20:18 +0000] "POST /enterprise_bpm/rest/a/uicontainer/latest/wJV9zQ/view HTTP/1.1" 500 104 172.24.164.20 - - [01/Feb/2018:16:12:59 +0000] "POST /enterprise_bpm/rest/a/model/latest/2279/form HTTP/1.1" 500 104
The issue is with the Apache mod_wl plugin. Oracle has acknowledged that there are issues with version 12.2.1.1 of the plugin.
Revert to a previous stable version of the mod_wl plugin (12.1.2). Alternatively, use a newer, patched version (12.2.1.2 and later).
This article affects versions 17.2 and later.
Last Reviewed: February 2018