EM12c: Connection To The Server Has Failed: Redirects to Login Page.
(Doc ID 1518199.1)
Last updated on FEBRUARY 16, 2019
Applies to:Enterprise Manager Base Platform - Version 18.104.22.168.0 and later
Information in this document applies to any platform.
Multi OMS behind SLB (F5 bigIP SLB)
Navigate around the 12c Console and click on particular link/Tab, it route back to login screen with following popup message:
"Connection To The Server Has Failed"
Click on OK, user require to login again.
Verified that the https console port persistence is 3600 second but user get this message less than 60 minutes.
Verified that frequent dummy logins were going to different OMS.
Accessing the https://SLBname.domain.com:port#/dummy (/dummy instead of /em) the URL on diff browser and every manual refresh , was re-directing to different OMS(s)
Verified the access_log entries for actual issue when popup message redirected to the login page.
From OMS1 server
$ tail -f /gc_inst/WebTierIH9/diagnostics/logs/OHS/ohs9/access_log | grep -i 'em/faces/logon/core-uifwk-console-login'
Above logs shows , when Login page displayed and it was routed to different OMS.
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