SAML Single Logout (SLO) is Now Supported by WebLogic when Configured as a SAML Service Provider
Blog: Oracle BPM
WLS Patch Set Update 12.2.1.4.231010 (WLS October 2023 PSU) has two important fixes, that enabled SLO support for WLS :
35673222 - SAML SINGLE LOGOUT (SLO) RELATED CHANGES IN THE CONSOLE
34556989 - SUPPORT FOR LOGOUT FROM SAML 2.0 IMPLEMENTATION