“Error: Single Sign Off didn’t take place” while logging out of OAM Admin console
I have logged into OAM 11g Admin console as weblogic user and performed some operations such as Creating Agents etc., and clicked logout. It redirected to the page showing “Sign off did not place”.
See the below screenshot for complete error message. 
Notice the URL it is redirected to OAM_HOST:port/oamsso/logout.html?end_url=/oamconsole/faces/pages/PolicyManager.jspx.
The IDMDomainAgent is the webgate name which protects OAM application deployed on WebLogic server. This webgate will be provided during OAM installation and configuration phase. I have logged into OAM console once again to see the status of IDMDomainAgent status and it is enabled.
I have checked the OAM diagnostics log at $WL_DOMAIN/servers/oam_server_instance/logs/oam-server1-diagnostics.log and found an error message “Failed to communicate with any of configured Access Server, ensure that it is up and running” but could see that OAM WebLogic instance is up and running. So I have bounced the OAM managed server once and I am able to logout of OAM console succesfully.
About the Author Mahendra
I am engulfed in Oracle Identity & Access Management domain. I have expertise on providing the optimized solutions for user provisioning, web access management, Single Sign-On and federation capabilities etc., I am also well versed with complex integrations within Identity Management and other product domains. I have expertise on building demos and implementation experience on products Oracle Access Manager, Oracle Adaptive Access Manager, Oracle Entitlement Server, Oracle Virtual Directory, Oracle Internet Directory etc., Look @ my blog: http://talkidentity.blogspot.com