EM12c: Connection To The Server Has Failed: Redirects to Login Page.

(Doc ID 1518199.1)

Last updated on MAY 10, 2013

Applies to:

Enterprise Manager Base Platform - Version 12.1.0.2.0 and later
Information in this document applies to any platform.

Symptoms

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)

From OMS1 server

$ tail -f /gc_inst/WebTierIH7/diagnostics/logs/OHS/ohs7/access_log  | grep -i dummy

 
Above logs shows , when Login page displayed and it was routed to different OMS.
 



Cause

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